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DSP Microcomputer ADSP-2171/ADSP-2172/ADSP-2173
FUNCTIONAL BLOCK DIAGRAM
PROGRAM ROM 8K x 24 PROGRAM SEQUENCER PROGRAM RAM 2K x 24 MEMORY POWERDOWN CONTROL LOGIC FLAGS EXTERNAL ADDRESS BUS DATA ADDRESS GENERATORS
DAG 1 DAG 2
FEATURES 30 ns Instruction Cycle Time (33 MIPS) from 16.67 MHz Crystal at 5.0 V 50 ns Instruction Cycle Time (20 MIPS) from 10 MHz Crystal at 3.3 V ADSP-2100 Family Code & Function Compatible with New Instruction Set Enhancements for Bit Manipulation Instructions, Multiplication Instructions, Biased Rounding, and Global Interrupt Masking Bus Grant Hang Logic 2K Words of On-Chip Program Memory RAM 2K Words of On-Chip Data Memory RAM 8K Words of On-Chip Program Memory ROM (ADSP-2172) 8- or 16-Bit Parallel Host Interface Port 300 mW Typical Power Dissipation at 5.0 V at 30 ns 70 mW Typical Power Dissipation at 3.3 V at 50 ns Powerdown Mode Featuring Less than 0.55 mW (ADSP2171/ADSP-2172) or 0.36 mW (ADSP-2173) CMOS Standby Power Dissipation with 100 Cycle Recovery from Powerdown Dual Purpose Program Memory for Both Instruction and Data Storage Independent ALU, Multiplier/Accumulator, and Barrel Shifter Computational Units Two Independent Data Address Generators Powerful Program Sequencer Provides Zero Overhead Looping Conditional Instruction Execution Two Double-Buffered Serial Ports with Companding Hardware and Automatic Data Buffering Programmable 16-Bit Interval Timer with Prescaler Programmable Wait State Generation Automatic Booting of Internal Program Memory from Byte-Wide External Memory, e.g., EPROM, or Through Host Interface Port Stand-Alone ROM Execution (Optional) Single-Cycle Instruction Execution Single-Cycle Context Switch Multifunction Instructions Three Edge- or Level-Sensitive External Interrupts Low Power Dissipation in Standby Mode 128-Lead TQFP and 128-Lead PQFP GENERAL DESCRIPTION
DATA MEMORY 2K x 16
PROGRAM MEMORY ADDRESS
DATA MEMORY ADDRESS
PROGRAM MEMORY DATA
DATA MEMORY DATA
ARITHMETIC UNITS
ALU MAC SHIFTER
TIMER SERIAL PORTS
SPORT 0 SPORT 1
EXTERNAL DATA BUS HOST INTERFACE PORT
ADSP-2100 BASE ARCHITECTURE
The ADSP-217x combines the ADSP-2100 base architecture (three computational units, data address generators, and a program sequencer) with two serial ports, a host interface port, a programmable timer, extensive interrupt capabilities, and onchip program and data memory. In addition, the ADSP-217x supports new instructions, which include bit manipulations-bit set, bit clear, bit toggle, bit test- new ALU constants, new multiplication instruction (x squared), biased rounding, and global interrupt masking, for increased flexibility. The ADSP-217x also has a Bus Grant Hang Logic (BGH) feature. The ADSP-217x provides 2K words (24-bit) of program RAM and 2K words (16-bit) of data memory. The ADSP-2172 provides an additional 8K words (24-bit) of program ROM. Powerdown circuitry is also provided to meet the low power needs of battery operated portable equipment. The ADSP-217x is available in 128-pin TQFP and 128-pin PQFP packages. Fabricated in a high-speed, double metal, low power, CMOS process, the ADSP-217X operates with a 30 ns instruction cycle time. Every instruction can execute in a single processor cycle. The ADSP-217x's flexible architecture and comprehensive instruction set allow the processor to perform multiple operations in parallel. In one processor cycle the ADSP-217x can: * generate the next program address * fetch the next instruction * perform one or two data moves * update one or two data address pointers * perform a computational operation This takes place while the processor continues to: * receive and transmit data through the two serial ports * receive and/or transmit data through the host interface port * decrement timer
(c) Analog Devices, Inc., 1995 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703
The ADSP-2171, ADSP-2172, and ADSP-2173 are single-chip microcomputers optimized for digital signal processing (DSP) and other high-speed numeric processing applications. The ADSP-2171 and ADSP-2172 are designed for 5.0 V applications. The ADSP-2173 is designed for 3.3 V applications. The ADSP-2172 also has 8K words (24-bit) of program ROM. REV. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
ADSP-2171/ADSP-2172/ADSP-2173
Development System Additional Information
The ADSP-2100 Family Development Software, a complete set of tools for software and hardware system development, supports the ADSP-217x. The System Builder provides a high-level method for defining the architecture of systems under development. The Assembler has an algebraic syntax that is easy to program and debug. The Linker combines object files into an executable file. The Simulator provides an interactive instruction-level simulation with a reconfigurable user interface to display different portions of the hardware environment. A PROM Splitter generates PROM programmer compatible files. The C Compiler, based on the Free Software Foundation's GNU C Compiler, generates ADSP-217x assembly source code. The Runtime Library includes over 100 ANSI-standard mathematical and DSP-specific functions. EZ-Tools, low cost, easy-to-use hardware tools, also support the ADSP-217x. The ADSP-217x EZ-ICE(R) Emulator aids in the hardware debugging of ADSP-217x systems. The emulator consists of hardware, host computer resident software, the emulator probe, and the pin adaptor. The emulator performs a full range of emulation functions including stand-alone operation or operation in the target, setting up to 20 breakpoints, single-step or full-speed operation in the target, examining and altering registers and memory values, and PC upload/download functions. If you plan to use the emulator, you should consider the emulator's restrictions (differences between emulator and processor operation). The EZ-LAB(R) Evaluation Board is a PC plug-in card, but it can operate in stand-alone mode. The evaluation board/system development board executes EPROM-based or downloaded programs. Modular Analog Front End daughter cards with different codecs will be made available.
EZ-ICE and EZ-LAB are registered trademarks of Analog Devices, Inc.
This data sheet provides a general overview of ADSP-217x functionality. For additional information on the architecture and instruction set of the processor, refer to the ADSP-2100 Family User's Manual. For more information about the Development System and ADSP-217x programmer's reference information, refer to the ADSP-2100 Family Assembler Tools & Simulator Manual.
ARCHITECTURE OVERVIEW
Figure 1 is an overall block diagram of the ADSP-217x. The processor contains three independent computational units: the ALU, the multiplier/accumulator (MAC) and the shifter. The computational units process 16-bit data directly and have provisions to support multiprecision computations. The ALU performs a standard set of arithmetic and logic operations; division primitives are also supported. The MAC performs single-cycle multiply, multiply/add and multiply/subtract operations with 40 bits of accumulation. The shifter performs logical and arithmetic shifts, normalization, denormalization, and derive exponent operations. The shifter can be used to efficiently implement numeric format control including multiword and block floating-point representations. The internal result (R) bus directly connects the computational units so that the output of any unit may be the input of any unit on the next cycle. A powerful program sequencer and two dedicated data address generators ensure efficient delivery of operands to these computational units. The sequencer supports conditional jumps, subroutine calls and returns in a single cycle. With internal loop counters and loop stacks, the ADSP-217x executes looped code with zero overhead; no explicit jump instructions are required to maintain the loop.
INSTRUCTION REGISTER DATA ADDRESS GENERATOR #1 DATA ADDRESS GENERATOR #2
PROGRAM ROM 8K X 24 PROGRAM SRAM 2K X 24
DATA SRAM 2K X 16
BOOT ADDRESS GENERATOR
POWER DOWN CONTROL LOGIC
3
2
PROGRAM SEQUENCER
14
FLAGS EXTERNAL ADDRESS BUS
14
PMA BUS DMA BUS MUX
14
24
PMD BUS
EXTERNAL DATA BUS
24
BUS EXCHANGE
16
MUX DMD BUS
INPUT REGS ALU OUTPUT REGS
INPUT REGS MAC OUTPUT REGS
16
INPUT REGS SHIFTER OUTPUT REGS
CONTROL LOGIC
COMPANDING CIRCUITRY TRANSMIT REG RECEIVE REG SERIAL PORT 0
TIMER
HIP CONTROL
11
TRANSMIT REG RECEIVE REG SERIAL PORT 1
5
HIP DATA BUS HIP REGISTERS
16
R BUS
5
Figure 1. ADSP-217x Block Diagram
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REV. A
ADSP-2171/ADSP-2172/ADSP-2173
Two data address generators (DAGs) provide addresses for simultaneous dual operand fetches (from data memory and program memory). Each DAG maintains and updates four address pointers. Whenever the pointer is used to access data (indirect addressing), it is post-modified by the value of one of four possible modify registers. A length value may be associated with each pointer to implement automatic modulo addressing for circular buffers. Efficient data transfer is achieved with the use of five internal buses. * Program Memory Address (PMA) Bus * Program Memory Data (PMD) Bus * Data Memory Address (DMA) Bus * Data Memory Data (DMD) Bus * Result (R) Bus The two address buses (PMA and DMA) share a single external address bus, allowing memory to be expanded off-chip, and the two data buses (PMD and DMD) share a single external data bus. Program memory can store both instructions and data, permitting the ADSP-217x to fetch two operands in a single cycle, one from program memory and one from data memory. The ADSP217x can fetch an operand from on-chip program memory and the next instruction in the same cycle. The memory interface supports slow memories and memorymapped peripherals with programmable wait state generation. External devices can gain control of external buses with bus request/grant signals (BR and BG). One execution mode (Go Mode) allows the ADSP-217x to continue running from internal memory. Normal execution mode requires the processor to halt while buses are granted. In addition to the address and data bus for external memory connection, the ADSP-217x has a configurable 8- or 16-bit Host Interface Port (HIP) for easy connection to a host processor. The HIP is made up of 16 data/address pins and 11 control pins. The HIP is extremely flexible and provides a simple interface to a variety of host processors. For example, the Motorola 68000 series, the Intel 80C51 series and the Analog Devices' ADSP-2101 can be easily connected to the HIP. The host processor can initialize the ASDP-217x's on-chip memory through the HIP. The ADSP-217x can respond to eleven interrupts. There can be up to three external interrupts, configured as edge or level sensitive, and eight internal interrupts generated by the Timer, the Serial Ports ("SPORTs"), the HIP, the powerdown circuitry, and software. There is also a master RESET signal. The two serial ports provide a complete synchronous serial interface with optional companding in hardware and a wide variety of framed or frameless data transmit and receive modes of operation. Each port can generate an internal programmable serial clock or accept an external serial clock. Boot circuitry provides for loading on-chip program memory automatically from byte-wide external memory. After reset, seven wait states are automatically generated. This allows, for example, a 30 ns ADSP-217x to use an external 200 ns EPROM as boot memory. Multiple programs can be selected and loaded from the EPROM with no additional hardware. The on-chip program memory can also be initialized through the HIP. The ADSP-217x features three general-purpose flag outputs whose states can be simultaneously changed through software. You can use these outputs to signal an event to an external device. In addition, the data input and output pins on SPORT1 can be alternatively configured as an input flag and an output flag. A programmable interval timer generates periodic interrupts. A 16-bit count register (TCOUNT) is decremented every n processor cycles, where n-l is a scaling value stored in an 8-bit register (TSCALE). When the value of the count register reaches zero, an interrupt is generated and the count register is reloaded from a 16-bit period register (TPERIOD). The ADSP-217x instruction set provides flexible data moves and multifunction (one or two data moves with a computation) instructions. Every instruction can be executed in a single processor cycle. The ADSP-217x assembly language uses an algebraic syntax for ease of coding and readability. A comprehensive set of development tools supports program development.
Serial Ports
The ADSP-217x incorporates two complete synchronous serial ports (SPORT0 and SPORT1) for serial communications and multiprocessor communication. Here is a brief list of the capabilities of the ADSP-217x SPORTs. Refer to the ADSP-2100 Family User's Manual for further details. * SPORTs are bidirectional and have a separate, doublebuffered transmit and receive section. * SPORTs can use an external serial clock or generate their own serial clock internally. * SPORTs have independent framing for the receive and transmit sections. Sections run in a frameless mode or with frame synchronization signals internally or externally generated. Frame sync signals are active high or inverted, with either of two pulse widths and timings. * SPORTs support serial data word lengths from 3 to 16 bits and provide optional A-law and -law companding according to CCITT recommendation G.711. * SPORT receive and transmit sections can generate unique interrupts on completing a data word transfer. * SPORTs can receive and transmit an entire circular buffer of data with only one overhead cycle per data word. An interrupt is generated after a data buffer transfer. * SPORT0 has a multichannel interface to selectively receive and transmit a 24 or 32 word, time-division multiplexed, serial bitstream. * SPORT1 can be configured to have two external interrupts (IRQ0 and IRQ1) and the Flag In and Flag Out signals. The internally generated serial clock may still be used in this configuration.
REV. A
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ADSP-2171/ADSP-2172/ADSP-2173
Pin Description
The ADSP-217x is available in 128-lead TQFP and 128-lead PQFP packages. Table I contains the pin descriptions.
Table I. ADSP-217x Pin List
Pin Group Name Address Data
# of Input/ Pins Output Function 14 24 O I/O Address output for program, data and boot memory spaces Data I/O pins for program and data memories. Input only for boot memory space, with two MSBs used as boot space addresses. Processor reset input External interrupt request #2 External bus request input External bus grant output External bus grant hang output External program memory select External data memory select Boot memory select External memory read enable External memory write enable Memory map select External clock or quartz crystal input Processor clock output HIP select input HIP acknowledge output 8/16 bit host select input 0 = 16-bit; 1 = 8-bit Boot mode select input 0 = EPROM/data bus; 1 = HIP Bus strobe select input 0 = RD, WR; 1 = RW, DS HIP address/data mode select input 0 = separate; 1 = multiplexed HIP read strobe/read/write select input HIP write strobe/host data strobe select input HIP data/data and address Host address 2/Address latch enable input Host addresses 1 and 0 inputs Serial port 0 I/O pins (TFS0, RFS0, DT0, DR0, SCLK0)
SPORT1 or IRQ1 (TFS1) IRQ0 (RFS1) SCLK1 FO (DT1) FI (DR1) FL2-0 VDD GND PWD PWDACK
5 1 1 1 1 1 3 6 11 1 1
I/O I I O O I O
Serial port 1 I/O pins External interrupt request #1 External interrupt request #0 Programmable clock output Flag Output pin Flag Input pin General purpose flag output pins Power supply pins Ground pins Powerdown pin Powerdown acknowledge pin
I O
Host Interface Port
RESET IRQ2 BR BG BGH PMS DMS BMS RD WR MMAP CLKIN, XTAL CLKOUT HSEL HACK HSIZE BMODE HMD0 HMD1
1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1
I I I O O O O O O O I I O I O
The ADSP-217x host interface port is a parallel I/O port that allows for an easy connection to a host processor. Through the HIP, the ADSP-217x can be used as a memory-mapped peripheral to a host computer. The HIP can be thought of as an area of dual-ported memory, or mailbox registers, that allow communication between the computational core of the ADSP-217x and the host computer. The HIP is completely asynchronous. The host processor can write data into the HIP while the ADSP-217x is operating at full speed. The HIP can be configured with the following pins: * HSIZE configures HIP for 8-bit or 16-bit communication with the host processor. * BMODE (when MMAP = 0) determines whether the ADSP217x boots from the host processor (through the HIP) or external EPROM (through the data bus). * HMD0 configures the bus strobes as separate read and write strobes, or a single read/write select and a host data strobe. * HMD1 selects separate address (3-bit) and data (16-bit) buses, or a multiplexed, 16-bit address/data bus with address latch enable. Tying these pins to appropriate values configures the ADSP217x for straight-wire interface to a variety of industry-standard microprocessors and microcomputers. In 8-bit reads, the ADSP-217x three-states the upper eight bits of the bus. When the host processor writes an 8-bit value to the HIP, the upper eight bits are all zeros. For additional information refer to the ADSP-2100 Family User's Manual.
HIP Operation
I I I
HRD/HRW HWR/HDS HD15-0/ HAD15-0 HA2/ALE HA1-0/ Unused SPORT0
1 1
I I
16 1
I/O I
The HIP contains six data registers (HDR5-0) and two status registers (HSR7-6) with an associated HMASK register for masking interrupts from individual HIP data registers. All HIP data registers are memory-mapped into the internal data memory of the ADSP-217x. HIP transfers can be managed using either interrupts or a polling scheme. These registers are shown in the section "ADSP-217x Registers." The HIP allows a software reset to be performed by the host processor. The internal software reset signal is asserted for five ADSP-217x processor cycles.
2 5
I I/O
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REV. A
ADSP-2171/ADSP-2172/ADSP-2173
Interrupts
The interrupt controller allows the processor to respond to the eleven possible interrupts and reset with minimum overhead. The ADSP-217x provides up to three external interrupt input pins, IRQ0, IRQ1 and IRQ2. IRQ2 is always available as a dedicated pin; SPORT1 may be reconfigured for IRQ0, IRQ1, and the flags. The ADSP-217x also supports internal interrupts from the timer, the host interface port, the two serial ports, software, and the powerdown control circuit. The interrupt levels are internally prioritized and individually maskable (except powerdown and reset). The input pins can be programmed to be either level- or edge-sensitive. The priorities and vector addresses of all interrupts are shown in Table II, and the interrupt registers are shown in Figure 2. Interrupts can be masked or unmasked with the IMASK register. Individual interrupt requests are logically ANDed with the bits in IMASK; the highest priority unmasked interrupt is then selected.The powerdown interrupt is nonmaskable. The ADSP-217x masks all interrupts for one instruction cycle following the execution of an instruction that modifies the IMASK register. This does not affect autobuffering. The interrupt control register, ICNTL, allows the external interrupts to be either edge- or level-sensitive. Interrupt routines can either be nested with higher priority interrupts taking precedence or processed sequentially. The IFC register is a write-only register used to force and clear interrupts generated from software.
Table II. Interrupt Priority & Interrupt Vector Addresses
Source of Interrupt Reset (or Power-Up with PUCR = 1) Powerdown (Nonmaskable) IRQ2 HIP Write HIP Read SPORT0 Transmit SPORT0 Receive Software Interrupt 1 Software Interrupt 0 SPORT1 Transmit or IRQ1 SPORT1 Receive or IRQ0 Timer
Interrupt Vector Address (Hex) 0000 (Highest Priority) 002C 0004 0008 000C 0010 0014 0018 001C 0020 0024 0028 (Lowest Priority)
On-chip stacks preserve the processor status and are automatically maintained during interrupt handling. The stacks are twelve levels deep to allow interrupt nesting. The following instructions allow global enable or disable servicing of the interrupts (including powerdown), regardless of the state of IMASK. Disabling the interrupts does not affect autobuffering. ENA INTS; DIS INTS; When you reset the processor, the interrupt servicing is enabled.
ICNTL
4 3 2 1 0 15 14 13 12 11 10 9
IMASK
8 7 6 5 4 3 2 1 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1 = enable, 0 = disable
IRQ0 Sensitivity IRQ1 Sensitivity IRQ2 Sensitivity Interrupt Nesting 1 = enable, 0 = disable
1 = edge 0 = level
IRQ2 HIP Write HIP Read SPORT0 Transmit SPORT0 Receive
Timer IRQ0 or SPORT1 Receive IRQ1 or SPORT1 Transmit Software 0 Software 1
IFC
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
INTERRUPT FORCE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
INTERRUPT CLEAR
IRQ2 SPORT0 Transmit SPORT0 Receive Software 1 Software 0 SPORT1 Transmit or IRQ1 SPORT1 Receive or IRQ0 Timer
Timer SPORT1 Receive or IRQ0 SPORT1 Transmit or IRQ1 Software 0 Software 1 SPORT0 Receive SPORT0 Transmit IRQ2
Figure 2. Interrupt Registers
REV. A
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ADSP-2171/ADSP-2172/ADSP-2173
LOW POWER OPERATION
The ADSP-217x has three low power modes that significantly reduce the power dissipation when the device operates under standby conditions. These modes are: * Powerdown * Idle * Slow Idle The CLKOUT pin may also be disabled to reduce external power dissipation. The CLKOUT pin is controlled by Bit 14 of SPORT0 Autobuffer Control Register, DM[0x3FF3].
Powerdown
programmable fraction of the normal clock rate, is specified by a selectable divisor given in the IDLE instruction. The format of the instruction is IDLE (n); where n = 16, 32, 64, or 128. This instruction keeps the processor fully functional, but operating at the slower clock rate. While it is in this state, the processor's other internal clock signals, such as SCLK, CLKOUT, and timer clock, are reduced by the same ratio. The default form of the instruction, when no clock divisor is given, is the standard IDLE instruction. When the IDLE (n) instruction is used, it effectively slows down the processor's internal clock and thus its response time to incoming interrupts--the 1-cycle response time of the standard idle state is increased by n, the clock divisor. When an enabled interrupt is received, the ADSP-217x will remain in the idle state for up to a maximum of n processor cycles (n = 16, 32, 64, or 128) before resuming normal operation. When the IDLE (n) instruction is used in systems that have an externally generated serial clock (SCLK), the serial clock rate may be faster than the processor's reduced internal clock rate. Under these conditions, interrupts must not be generated at a faster rate than can be serviced, due to the additional time the processor takes to come out of the idle state (a maximum of n processor cycles).
SYSTEM INTERFACE
The ADSP-217x processor has a low power feature that lets the processor enter a very low power dormant state through hardware or software control. Here is a brief list of powerdown features. Refer to the ADSP-2100 Family User's Manual, Chapter 9 "System Interface" for detailed information about the powerdown feature. * Powerdown mode holds the processor in CMOS standby with a maximum current of less than 100 A in some modes. * Quick recovery from powerdown. The processor begins executing instructions in as few as 100 CLKIN cycles. * Support for an externally generated TTL or CMOS processor clock. The external clock can continue running during powerdown without affecting the lowest power rating and 100 CLKIN cycle recovery. * Support for crystal operation includes disabling the oscillator to save power (the processor automatically waits 4096 CLKIN cycles for the crystal oscillator to start and stabilize), and letting the oscillator run to allow 100 CLKIN cycle startup. * Powerdown is initiated by either the powerdown pin (PWD) or the software powerdown force bit. * Interrupt support allows an unlimited number of instructions to be executed before optionally powering down. The powerdown interrupt also can be used as a non-maskable, edge sensitive interrupt. * Context clear/save control allows the processor to continue where it left off or start with a clean context when leaving the powerdown state. * The RESET pin also can be used to terminate powerdown, and the host software reset feature can be used to terminate powerdown under certain conditions. * Powerdown acknowledge pin indicates when the processor has entered powerdown.
Idle
Figure 3 shows a basic system configuration with the ADSP217x, two serial devices, a host processor, a boot EPROM, and optional external program and data memories. Up to 14K words of data memory and 16K words of program memory can be supported. Programmable wait state generation allows the processor to interface easily to slow memories. The ADSP-217x also provides one external interrupt and two serial ports or three external interrupts and one serial port.
Clock Signals
The ADSP-217x can be clocked by either a crystal or by a TTLcompatible clock signal. The CLKIN input cannot be halted, changed during operation, or operated below the specified frequency during normal operation. The only exception is while the processor is in the Powerdown State. For additional information, refer to Chapter 9, ADSP-2100 Family User's Manual for detailed information on this powerdown feature. If an external clock is used, it should be a TTL-compatible signal running at half the instruction rate. The signal is connected to the processor's CLKIN input. When an external clock is used, the XTAL input must be left unconnected. The ADSP-217x uses an input clock with a frequency equal to half the instruction rate; a 16.67 MHz input clock yields a 30 ns processor cycle (which is equivalent to 33 MHz). Normally, instructions are executed in a single processor cycle. All device timing is relative to the internal instruction clock rate, which is indicated by the CLKOUT signal when enabled.
When the ADSP-217x is in the Idle Mode, the processor waits indefinitely in a low power state until an interrupt occurs. When an unmasked interrupt occurs, it is serviced; execution then continues with the instruction following the IDLE instruction.
Slow Idle
The IDLE instruction is enhanced on the ADSP-217x to let the processor's internal clock signal be slowed during IDLE, further reducing power consumption. The reduced clock frequency, a
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REV. A
ADSP-2171/ADSP-2172/ADSP-2173
HIP CONTROL CLOCK OR CRYSTAL 6 CLKIN CLKOUT RESET IRQ2 BR BG MMAP 3 FL2-0 PMS RD WR ADDRESS 14 DATA 24 DMS BMS DR or FI SERIAL PORT 1 SERIAL PORT 0 XTAL PWD PWDACK VDD 9 GND 4 HOST MODE 7 16 HIP SCLK RFS TFS DT DR SERIAL DEVICE HIP DATA/ADDR HOST PROCESSOR (OPTIONAL)
(OPTIONAL)
ADSP-217x
SCLK RFS or IRQ0 SERIAL DEVICE TFS or IRQ1 DT or FO
(OPTIONAL)
24
D23-8 16
D23-22 14 2
D15-8 8
A
D
CS OE WE OE WE
A
D
CS
A
D
CS
PROGRAM MEMORY
(OPTIONAL)
DATA MEMORY & PERIPHERALS
(OPTIONAL)
BOOT MEMORY
OE e.g., EPROM 27C64 27C128 27C256 27C512
NOTE: THE TWO MSBs OF THE DATA BUS ARE USED AS THE MSBs OF THE BOOT EPROM ADDRESS. THIS IS ONLY REQUIRED FOR THE 27C256 AND 27C512.
Figure 3. ADSP-217x Basic System Configuration
Because the ADSP-217x includes an on-chip oscillator circuit, an external crystal may be used. The crystal should be connected across the CLKIN and XTAL pins, with two capacitors connected as shown in Figure 4. A parallel-resonant, fundamental frequency, microprocessor-grade crystal should be used.
to stabilize. If RESET is activated any time after power-up, the clock continues to run and does not require stabilization time. The power-up sequence is defined as the total time required for the crystal oscillator circuit to stabilize after a valid VDD is applied to the processor, and for the internal phase-locked loop (PLL) to lock onto the specific crystal frequency. A minimum of 2000 CLKIN cycles ensures that the PLL has locked but does not include the crystal oscillator start-up time. During this power-up sequence the RESET signal should be held low. On any subsequent resets, the RESET signal must meet the minimum pulse width specification, tRSP. The RESET input contains some hysteresis; however, if you use an RC circuit to generate your RESET signal, the use of an external Schmidt trigger is recommended. The master reset sets all internal stack pointers to the empty stack condition, masks all interrupts and clears the MSTAT register. When RESET is released, if there is no pending bus request and the chip is configured for booting (MMAP = 0), the boot-loading sequence is performed. Then the first instruction is fetched from internal program memory location 0x0000.
CLKIN
XTAL
CLKOUT
ADSP-217x
Figure 4. External Crystal Connections
A clock output (CLKOUT) signal is generated by the processor at the processor's cycle rate. This can be enabled and disabled by the CLKODIS bit in the SPORT0 Autobuffer Control Register, DM[0x3FF3].
Reset
The RESET signal initiates a master reset of the ADSP-217x. The RESET signal must be asserted during the power-up sequence to assure proper initialization. RESET during initial power-up must be held long enough to allow the internal clock
REV. A
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ADSP-2171/ADSP-2172/ADSP-2173
Program Memory Interface
The on-chip program memory address bus (PMA) and the onchip program memory data bus (PMD) are multiplexed with on-chip DMA and DMD buses, creating a single external data bus and a single external address bus. The 14-bit address bus directly addresses up to 16K words. 10K words of memory for ADSP-217x with optional 8K ROM and 2K words of memory for the non-ROM version are on-chip. The data bus is bidirectional and 24 bits wide to external program memory. Program memory may contain code and data. The program memory data lines are bidirectional. The program memory select (PMS) signal indicates access to the program memory and can be used as a chip select signal. The write (WR) signal indicates a write operation and is used as a write strobe. The read (RD) signal indicates a read operation and is used as a read strobe or output enable signal. The ADSP-217x writes data from its 16-bit registers to the 24bit program memory using the PX register to provide the lower eight bits. When it reads data (not instructions) from 24-bit program memory to a 16-bit data register, the lower eight bits are placed in the PX register.
Program Memory Maps ADSP-217x
The optional ROM always resides at locations PM[0x0800] through PM[0x27FF] regardless of the state of the MMAP pin. The ROM is enabled by setting the ROMENABLE bit in the Data Memory Wait State control register, DM[0x3FFE]. When the ROMENABLE bit is set to 1, addressing program memory in this range will access the on-chip ROM. When set to zero, addressing program memory in this range will access external program memory. The ROMENABLE bit is set to 0 on chip reset unless MMAP and BMODE = 1. The program memory interface can generate 0 to 7 wait states for external memory devices; default is to 7 wait states after RESET.
Boot Memory Interface
The ADSP-217x can load on-chip memory from external boot memory space. The boot memory space consists of 64K by 8-bit space, divided into eight separate 8K by 8-bit pages. Three bits in the system control register select which page is loaded by the boot memory interface. Another bit in the system control register allows the user to force a boot loading sequence under software control. Boot loading from page 0 after RESET is initiated automatically if MMAP = 0. The boot memory interface can generate 0 to 7 wait states; it defaults to 7 wait states after RESET. This allows the ADSP217x to boot from a single low cost EPROM such as a 27C256. Program memory is booted one byte at a time and converted to 24-bit program memory words. The BMS and RD signals are used to select and to strobe the boot memory interface. Only 8-bit data is read over the data bus, on pins D8-D15. To accommodate addressing up to eight pages of boot memory, the two MSBs of the data bus are used in the boot memory interface as the two MSBs of the boot space address. The ADSP-2100 Family Assembler and Linker support the creation of programs and data structures requiring multiple boot pages during execution. RD and WR must always be qualified by PMS, DMS, or BMS to ensure the correct program, data, or boot memory accessing.
HIP Booting
Program memory can be mapped in two ways, depending on the state of the MMAP pin. Figure 5 shows the different configurations. When MMAP = 0, internal RAM occupies 2K words beginning at address 0x0000. In this configuration, the boot loading sequence (described in "Boot Memory Interface") is automatically initiated when RESET is released.
2K INTERNAL RAM BOOTED 0000 07FF 0800 2K EXTERNAL 07FF 0800 8K INTERNAL ROM
(ROMENABLE = 1)
0000
2K INTERNAL RAM NOT BOOTED
0000 07FF 0800
8K INTERNAL ROM
(ROMENABLE = 1)
8K INTERNAL ROM OR OR
(ROMENABLE DEFAULTS TO 1 DURING RESET)
8K EXTERNAL
(ROMENABLE = 0)
8K EXTERNAL
(ROMENABLE = 0)
27FF 2800 6K EXTERNAL 3FFF MMAP = 0 BMODE = 0 or 1 MMAP = 1 BMODE = 0 4K EXTERNAL 2K INTERNAL RAM
27FF 2800 37FF 3800 3FFF MMAP = 1 BMODE = 1 6K EXTERNAL
27FF 2800
The ADSP-217x can also boot programs through its Host Interface Port. If BMODE = 1 and MMAP = 0, the ADSP-217x boots from the HIP. If BMODE = 0, the ADSP-217x boots through the data bus (in the same way as the ADSP-2101), as described above in "Boot Memory Interface." For additional information about HIP booting, refer to the ADSP-2100 Family User's Manual, Chapter 7, "Host Interface Port." The ADSP-2100 Family Development Software includes a utility program called the HIP Splitter. This utility allows the creation of programs that can be booted via the ADSP-217x's HIP, in a similar fashion as EPROM-bootable programs generated by the PROM Splitter utility.
3FFF
Figure 5. ADSP-217x Memory Maps
When MMAP = 1, words of external program memory begin at address 0x0000 and internal RAM is located in the upper 2K words, beginning at address 0x3800. In this configuration, program memory is not loaded although it can be written to and read from under program control.
-8-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
Stand-Alone ROM Execution
When the MMAP and BMODE pins both are set to 1, the ROM is automatically enabled and execution commences from program memory location 0x0800 at the start of ROM. This feature lets an embedded design operate without external memory components. To operate in this mode, the ROM coded program must copy an interrupt vector table to the appropriate locations in program memory RAM. In this mode, the ROM enable bit defaults to 1 during reset.
Table III. Boot Summary Table
Upon completion of the prototype manufacture, Analog Devices will ship prototype units and a delivery schedule update for production units. An invoice against your purchase order for the NRE charges is issued at this time. There is a charge for each ROM mask generated and a minimum order quantity. Consult your sales representative for details. A separate order must be placed for parts of a specific package type, temperature range, and speed grade.
Data Memory Interface
BMODE = 0 MMAP = 0 Boot from EPROM, then execution starts at internal RAM location 0x0000
BMODE = 1 Boot from HIP, then execution starts at internal RAM location 0x0000
The data memory address (DMA) bus is 14 bits wide. The bidirectional external data bus is 24 bits wide, with the upper 16 bits (D8-D23) used for data memory data (DMD) transfers. The data memory select (DMS) signal indicates access to the data memory and can be used as a chip select signal. The write (WR) signal indicates a write operation and can be used as a write strobe. The read (RD) signal indicates a read operation and can be used as a read strobe or output enable signal. The ADSP-217x supports memory-mapped I/O, with the peripherals memory mapped into the data or program memory address spaces and accessed by the processor in the same manner.
Data Memory Map
MMAP = 1 No booting, execution Stand-Alone Mode, starts at external memory execution starts at location 0x0000 internal ROM location 0x0800
Ordering Procedure for ADSP-2172 Processors
To place an order for a custom ROM-coded ADSP-2172 processor, you must: 1. Complete the following forms contained in the ADSP ROM Ordering Package, available from your Analog Devices sales representative: ADSP-2172 ROM Specification Form ROM Release Agreement ROM NRE Agreement & Minimum Quantity Order (MQO) Acceptance Agreement for Pre-production ROM Products. 2. Return the forms to Analog Devices along with two copies of the Memory Image File (.EXE file) of your ROM code. The files must be supplied on two 3.5" or 5.25" floppy disks for IBM PC (DOS 2.01 or higher). 3. Place a purchase order with Analog Devices for nonrecurring engineering charges (NRE) associated with ROM product development. After this information is received, it is entered into Analog Devices' ROM Manager System which assigns a custom ROM model number to the product. This model number will be branded on all prototype and production units manufactured to these specifications. To minimize the risk of code being altered during this process, Analog Devices verifies that the .EXE files on both floppy disks are identical, and recalculates the checksums for the .EXE file entered into the ROM Manager System. The checksum data, in the form of a ROM memory map, a hard copy of the .EXE file, and a ROM Data Verification Form are returned to you for inspection. A signed ROM Verification Form and a purchase order for production units are required prior to any product being manufactured. Prototype units may be applied toward the minimum order quantity.
The on-chip data memory RAM resides in the 2K words of data memory beginning at address 0x3000, as shown in Figure 6. In addition, data memory locations from 0x3800 to the end of data memory at 0x3FFF are reserved. Control registers for the system, timer, wait state configuration, host interface port, and serial port operations are located in this region of memory.
0000 0000 DWAIT 0 (1K EXTERNAL) DWAIT 1 (1K EXTERNAL) 03FF 0400 07FF 0800
12K EXTERNAL
DWAIT 2 (10K EXTERNAL)
2FFF 3000 2K INTERNAL DATA RAM 1K RESERVED MEMORY MAPPED REGISTERS/ RESERVED 3FFF DATA MEMORY WAIT STATES 37FF 3800 3BFF 3C00 NO WAIT STATES
2FFF 3000
3FFF
Figure 6. ADSP-217x Data Memory Map
The remaining 12K of data memory is external. External data memory is divided into three zones, each associated with its own wait state generator. By mapping peripherals into different zones, you can accommodate peripherals with different wait state requirements. All zones default to 7 wait states after RESET. For compatibility with other ADSP-2100 Family processors, bit definitions for DWAIT 3 and DWAIT4 are shown in the Data Memory Wait State Control Register, but they are not used by the ADSP-217x.
REV. A
-9-
ADSP-2171/ADSP-2172/ADSP-2173
Bus Request & Bus Grant
The ADSP-217x can relinquish control of the data and address buses to an external device. When the external device requires access to memory, it asserts the bus request (BR) signal. If the ADSP-217x is not performing an external memory access, then it responds to the active BR input in the following processor cycle by: * three-stating the data and address buses and the PMS, DMS, BMS, RD, WR output drivers, * asserting the bus grant (BG) signal, and * halting program execution. If the Go Mode is enabled, the ADSP-217x will not halt program execution until it encounters an instruction that requires an external memory access. If the ADSP-217x is performing an external memory access when the external device asserts the BR signal, then it will not three-state the memory interfaces or assert the BG signal until the processor cycle after the access completes, which can be up to eight cycles later depending on the number of wait states. The instruction does not need to be completed when the bus is granted. If a single instruction requires two external memory accesses, the bus will be granted between the two accesses. When the BR signal is released, the processor releases the BG signal, reenables the output drivers and continues program execution from the point where it stopped. The bus request feature operates at all times, including when the processor is booting and when RESET is active. The new Bus Grant Hang logic and associated BGH pin allow the ADSP-217x to operate in a multiprocessor environment with a minimal number of "wasted" processor cycles. The bus grant hang pin is asserted when the ADSP-217x desires a cycle,
but cannot execute it because the bus is granted to some other processor. With the BGH signal, the other processor(s) in the system can be alerted that the ADSP-217x is hung and release the bus by deasserting bus request. Once the bus is released the ADSP-217x executes the external access and deasserts BGH. This is a signal to the other processors that external memory is now available.
ADSP-217X REGISTERS
Figure 7 summarizes all the registers in the ADSP-217x. Some registers store values. For example, AX0 stores an ALU operand; I4 stores a DAG2 pointer. Other registers consist of control bits and fields, or status flags. For example, ASTAT contains status flags from arithmetic operations, and fields in DWAIT control the numbers of wait states for different zones of data memory. A secondary set of registers in all computational units allows a single-cycle context switch. The bit and field definitions for control and status registers are given in the rest of this section, except for IMASK, ICNTL and IFC, which are defined earlier in this data sheet. The system control register, DWAIT register, timer registers, HIP control registers, HIP data registers, and SPORT control registers are all mapped into data memory; that is, registers are accessed by reading and writing data memory locations rather than register names. The particular data memory address is shown with each memory-mapped register. Register bit values shown on the following pages are the default bit values after reset. If no values are shown, the bits are indeterminate at reset. Reserved bits are shown in gray; these bits should always be written with zeros.
PROGRAM SEQUENCER
ICNTL IFC SSTAT
DAG 1
I0 I1 I2 I3 M0 M1 M2 M3 L0 L1 L2 L3
DAG 2
I4 I5 I6 I7 M4 M5 M6 M7 L4 L5 L6 L7
CNTR OWRCNTR COUNT STACK 4 X 14
IMASK MSTAT ASTAT STATUS STACK 12 X 25
LOOP STACK 4 X 18 PC STACK 16 X 14
PROGRAM ROM 8K X 24
0x3FFF 0x3FFE
SYSTEM CONTROL DM WAIT CONTROL
PROGRAM SRAM 2K X 24
DATA SRAM 2K X 16
HOST INTERFACE PORT
0x3FE0-0x3FE5 0x3FE6-0x3FE7 0x3FE8
DATA STATUS HMASK
14
PMA BUS DMA BUS
14
24
PMD BUS
PX
16
DMD BUS
FLAGS
AX0 AX1 AY0 AY1 MX0 MX1 MY0 MY1 SI SE SB RX0 TX0 0x3FFA-0x3FF3 CONTROL REGISTERS RX1 TX1 0x3FF2-0x3FEF CONTROL REGISTERS
TIMER
0x3FFD 0x3FFC 0x3FFB TPERIOD TCOUNT TSCALE
ALU
AR AF
MAC
MR0 MR1 MR2 MF
SHIFTER
SR0 SR1
SPORT 0
SPORT 1
POWERDOWN CONTROL LOGIC
Figure 7. ADSP-217x Registers Control Register
-10-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ASTAT
765 00 4321 00 0 0 AZ ALU Result Zero AN ALU Result Negative AV ALU Overflow AC ALU Carry AS ALU X Input Sign AQ ALU Quotient MV MAC Overflow SS Shifter Input Sign 7 0 65 10 000
SSTAT (Read-Only)
432 10 10 1 PC Stack Empty PC Stack Overflow Count Stack Empty Count Stack Overflow Status Stack Empty Status Stack Overflow Loop Stack Empty Loop Stack Overflow 10
MSTAT
6543210 0 000 000 Data Register Bank Select 0 = primary, 1 = secondary Bit Reverse Mode Enable (DAG1) ALU Overflow Latch Mode Enable AR Saturation Mode Enable MAC Result Placement 0 = fractional, 1 = integer Timer Enable Go Mode Enable
System Control Register 0x3FFF
15 0 14 0 13 12 0 0 11 0 10 1 9 0 8 0 7 0 6 0 5 1 4 1 3 1 2 1 1 1 0 1
SPORT0 Enable 1 = enabled, 0 = disabled SPORT1 Enable 1 = enabled, 0 = disabled SPORT1 Configure 1 = serial port 0 = FI, FO, IRQ0, IRQ1, SCLK
PWAIT Program Memory Wait States BWAIT Boot Wait States BPAGE Boot Page Select BFORCE Boot Force Bit
Timer Registers
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0x3FFD
TPERIOD Period Register
TCOUNT Counter Register
0x3FFC
0
0
0
0
0
0
0
0
TSCALE Scaling Register
0x3FFB
Control Registers
REV. A
-11-
ADSP-2171/ADSP-2172/ADSP-2173
ROM Enable/Data Memory Wait State Control Register 0x3FFE
15 0 14 13 1 1 12 1 11 1 10 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 1
DWAIT4
DWAIT3 ROM enable 1 = enable 0 = disable
DWAIT2
DWAIT1
DWAIT0
SPORT0 Multichannel Receive Word Enable Registers 1 = Channel Enabled 0 = Channel Ignored 0x3FFA
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
SPORT0 Multichannel Transmit Word Enable Registers 1 = Channel Enabled 0 = Channel Ignored 0x3FF8
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0x3FF9
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9
0x3FF7
8 7 6 5 4 3 2 1 0
SPORT0 Control Register 0x3FF6
15 0 Multichannel Enable MCE SLEN Serial Word Length Internal Serial Clock Generation ISCLK Receive Frame Sync Required RFSR Receive Frame Sync Width RFSW Multichannel Frame Delay MFD Only If Multichannel Mode Enabled Transmit Frame Sync Required TFSR Transmit Frame Sync Width TFSW ITFS Internal Transmit Frame Sync Enable (or MCL Multichannel Length; 1 = 32 words, 0 = 24 words Only If Multichannel Mode Enabled) DTYPE Data Format 00 = right justify, zero-fill unused MSBs 01 = right justify, sign extend into unused MSBs 10 = compand using -law 11 = compand using A-law INVRFS Invert Receive Frame Sync INVTFS Invert Transmit Frame Sync (or INVTDV Invert Transmit Data Valid Only If Multichannel Mode Enabled) IRFS Internal Receive Frame Sync Enable 14 0 13 12 0 0 11 0 10 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 0
Control Registers
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REV. A
ADSP-2171/ADSP-2172/ADSP-2173
SPORT0 SCLKDIV Serial Clock Divide Modulus 0x3FF5
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPORT0 RFSDIV Receive Frame Sync Divide Modulus 0x3FF4
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPORT0 Autobuffer Control Register 0x3FF3
15 0 14 0 13 12 0 0 11 10 9 8 7 6 5 4 3 2 1 0 0 0
CLKODIS CLKOUT Disable Control Bit BIASRND MAC Biased Rounding Control Bit TIREG Transmit Autobuffer I Register TMREG Transmit Autobuffer M Register
RBUF Receive Autobuffering Enable TBUF Transmit Autobuffering Enable RMREG Receive Autobuffer M Register RIREG Receive Autobuffer I Register
SPORT1 Control Register 0x3FF2
15 14 0 Flag Out (Read Only) SLEN Serial Word Length Internal Serial Clock Generation ISCLK Receive Frame Sync Required RFSR Receive Frame Sync Width RFSW Transmit Frame Sync Required TFSR INVRFS Invert Receive Frame Sync Transmit Frame Sync Width TFSW INVTFS Invert Transmit Frame Sync ITFS Internal Transmit Frame Sync Enable IRFS Internal Receive Frame Sync Enable DTYPE Data Format 00 = right justify, zero-fill unused MSBs 01 = right justify, sign extend into unused MSBs 10 = compand using -law 11 = compand using A-law 13 12 0 0 11 0 10 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 0
Control Registers
REV. A
-13-
ADSP-2171/ADSP-2172/ADSP-2173
SPORT1 SCLKDIV Serial Clock Divide Modulus 0x3FF1
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPORT1 RFSDIV Receive Frame Sync Divide Modulus 0x3FF0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SPORT1 Autobuffer Control Register 0x3FEF
15 0 14 0 13 0 12 11 0 10 9 8 7 6 5 4 3 2 1 0 0 0
XTALDIS XTAL Pin Drive Disable during Powerdown 1 = disabled, 0 = enabled (disable XTAL pin when no external crystal connected) XTALDELAY 4096 Cycle Delay Enable 1 = delay, 0 = no delay PDFORCE Powerdown Force PUCR Powerup Context Reset Enable 1 = soft reset (context clear), 0 = resume execution
RBUF Receive Autobuffer Enable TBUF Transmit Autobuffer Enable RMREG Receive M Register RIREG Receive I Register TMREG Transmit M Register TIREG Transmit I Register
HIP Data Registers HDR5
0x3FE5
0 0 0 0 0
HMASK Register 0x3FE8
15 14 13 12 11 10 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HDR4
0x3FE4
Host HDR5 Read Host HDR4 Read Host HDR3 Read Host HDR2 Read
Host HDR0 Write Host HDR1 Write Host HDR2 Write Host HDR3 Write Host HDR4 Write Host HDR5 Write Interrupt Enables 1 = Enable 0 = Disable
HDR3
0x3FE3
HDR2
0x3FE2
HDR1
0x3FE1
Host HDR1 Read Host HDR0 Read
HDR0
0x3FE0
Control Registers
-14-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
HSR6 0x3FE6
15 0 2171 HDR5 Write 2171 HDR4 Write 2171 HDR3 Write 2171 HDR2 Write 2171 HDR1 Write 2171 HDR0 Write 14 13 0 0 12 0 11 0 10 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 0
Host HDR0 Write Host HDR1 Write Host HDR2 Write Host HDR3 Write Host HDR4 Write Host HDR5 Write
HSR7 0x3FE7
15 0 14 0 13 12 0 0 11 0 10 0 9 0 8 1 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 0
2171 HDR0 Write 2171 HDR1 Write 2171 HDR2 Write 2171 HDR3 Write Overwrite Mode Software Reset 2171 HDR4 Write 2171 HDR5 Write
Control Registers
Biased Rounding INSTRUCTION SET DESCRIPTION
A new mode allows biased rounding in addition to the normal unbiased rounding. When the BIASRND bit is set to 0, the normal unbiased rounding operations occur. When the BIASRND bit is set to 1, biased rounding occurs instead of the normal unbiased rounding. When operating in biased rounding mode all rounding operations with MR0 set to 0x8000 will round up, rather than only rounding odd MR1 values up. For example:
MR value before RND 00-0000-8000 00-0001-8000 00-0000-8001 00-0001-8001 00-0000-7FFF 00-0001-7FFF biased RND result 00-0001-8000 00-0002-8000 00-0001-8001 00-0002-8001 00-0000-7FFF 00-0001-7FFF unbiased RND result 00-0000-8000 00-0002-8000 00-0001-8001 00-0002-8001 00-0000-7FFF 00-0001-7FFF
This mode only has an effect when the MR0 register contains 0x8000, all other rounding operation work normally. This mode was added to allow more efficient implementation of bit specified algorithms which specify biased rounding such as the GSM speech compression routines. Unbiased rounding is preferred for most algorithms. Note: BIASRND bit is Bit 12 of the SPORT0 Autobuffer Control register.
The ADSP-217x assembly language instruction set has an algebraic syntax that was designed for ease of coding and readability. The assembly language, which takes full advantage of the processor's unique architecture, offers the following benefits: * The algebraic syntax eliminates the need to remember cryptic assembler mnemonics. For example, a typical arithmetic add instruction, such as AR = AX0 + AY0, resembles a simple equation. * Every instruction assembles into a single, 24-bit word that can execute in a single instruction cycle. * The syntax is a superset ADSP-2100 Family assembly language and is completely source and object code compatible with other family members. Programs may need to be relocated to utilize internal memory and conform to the ADSP217x's interrupt vector and reset vector map. * Sixteen condition codes are available. For conditional jump, call, return, or arithmetic instructions, the condition can be checked and the operation executed in the same instruction cycle. * Multifunction instructions allow parallel execution of an arithmetic instruction with up to two fetches or one write to processor memory space during a single instruction cycle. Consult the ADSP-2100 Family User's Manual for a complete description of the syntax and an instruction set reference.
REV. A
-15-
ADSP-2171/ADSP-2172/ADSP-2173
Example Code
The following example is a code fragment that performs the filter tap update for an adaptive (least-mean-squared algorithm) filter. Notice that the computations in the instructions are written like algebraic equations.
MF=MX0*MY1 (RND), MX0=DM (I2,M1); /* MF=error*beta */ MR=MX0*MF (RND), AY0=PM (I6,MS);
DO adapt UNTIL CE;
AR=MR1 + AY0, MX0=DM (I2,M1), AY0=PM (I6,M7);
adapt: PM(I6,M6) =AR, MR=MX0*MF (RND);
MODIFY (I2, M3); MODIFY (I6, M7); /* Point to oldest data */ /* Point to start of data */
Interrupt Enable
The ADSP-217x supports an interrupt enable instruction. Interrupts are enabled by default at reset. The instruction source code is specified as follows: Syntax: ENA INTS; Description: Executing the ENA INTS instruction allows all unmasked interrupts to be serviced again.
Interrupt Disable
The ADSP-217x supports an interrupt disable instruction. The instruction source code is specified as follows: Syntax: DIS INTS; Description: Reset enables interrupt servicing. Executing the DIS INTS instruction causes all interrupts to be masked without changing the contents of the IMASK register. Disabling interrupts does not affect the autobuffer circuitry, which will operate normally whether or not interrupts are enabled. The disable interrupt instruction masks all user interrupts including the powerdown interrupt.
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REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172-SPECIFICATIONS
RECOMMENDED OPERATING CONDITIONS
K Grade Parameter VDD TAMB Supply Voltage Ambient Operating Temperature Min 4.5 0 Max 5.5 +70 Min 4.5 -40 B Grade Max 5.5 +85 Unit V C
ELECTRICAL CHARACTERISTICS
Parameter VIH VIH VIH VIL VOH Hi-Level Input Voltage1, 2 Hi-Level CLKIN Voltage Hi-Level RESET Voltage Lo-Level Input Voltage1, 3 Hi-Level Output Voltage1, 4, 5 Test Conditions @ VDD = max @ VDD = max @ VDD = max @ VDD = min @ VDD = min IOH = -0.5 mA @ VDD = min IOH = -100 A6 @ VDD = min IOL = 2 mA @ VDD = max VIN = VDD max @ VDD = max VIN = 0 V @ VDD = max, VIN = VDD max8 @ VDD = max, VIN = 0 V8 @ VDD = max @ VDD = max tCK = 30 ns11 Lowest Power Mode12 @ VIN = 2.5 V, fIN = 1.0 MHz, TAMB = 25C @ VIN = 2.5 V, fIN = 1.0 MHz, TAMB = 25C K/B Grades Min Max 2.0 2.2 2.2 0.8 2.4 VDD - 0.3 0.4 10 10 10 10 18 75 100 Unit V V V V V V V A A A A mA mA A pF
VOL IIH IIL IOZH IOZL IDD IDD IDD CI CO
Lo-Level Output Voltage1, 4, 5 Hi-Level Input Current3 Lo-Level Input Current3 Tristate Leakage Current7 Tristate Leakage Current7 Supply Current (Idle)9, 10 Supply Current (Dynamic)10 Supply Current (Powerdown)10 Input Pin Capacitance3, 6, 13 Output Pin Capacitance6, 7, 13, 14
8
8
pF
NOTES 1 Bidirectional pins: D0-D23, RFS0, RFS1, SCLK0, SCLK1, TFS0, TFS1, HD0-HD15/HAD0-HAD15. 2 Input only pins: RESET, IRQ2, BR, MMAP, DR0, DR1, HSEL, HSIZE, BMODE, HMD0, HMD1, HRD/HWR, HWR/HDS, PWD, HA2/ALE, HA1-0. 3 Input only pins: CLKIN, RESET, IRQ2, BR, MMAP, DR0, DR1, HSEL, HSIZE, BMODE, HMD0, HMD1, HRD/HWR, HWR/HDS, PWD, HA2/ALE, HA1-0. 4 Output pins: BG, PMS, DMS, BMS, RD, WR, PWDACK, A0-A13, DT0, DT1, CLKOUT, HACK, FL2-0, BGH. 5 Although specified for TTL outputs, all ADSP-2171/ADSP-2172 outputs are CMOS-compatible and will drive to V DD and GND, assuming no dc loads. 6 Guaranteed but not tested. 7 Three-statable pins: A0-A13, D0-D23, PMS, DMS, BMS, RD, WR, DT0, DT1, SCLK0, SCLK1, TFS0, TFS1, RFS0, RSF1, HD0-HD15/HAD0-HAD15. 8 0 V on BR, CLKIN Active (to force three-state condition). 9 Idle refers to ADSP-2171/ADSP-2172 state of operation during execution of IDLE instruction. Deasserted pins are driven to either V DD or GND. Current reflects device operation with CLKOUT disabled. 10 Current reflects device operating with no output loads. 11 VIN = 0.4 V and 2.4 V. For typical figures for supply currents, refer to "Power Dissipation" section. 12 See Chapter 9, of the ADSP-2100 Family User's Manual for details. 13 Applies to TQFP and PQFP package types. 14 Output pin capacitance is the capacitive load for any three-state output pin. Specifications subject to change without notice.
REV. A
-17-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
ABSOLUTE MAXIMUM RATINGS *
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +7 V Input Voltage . . . . . . . . . . . . . . . . . . . . . -0.3 V to VDD + 0.3 V Output Voltage Swing . . . . . . . . . . . . . . -0.3 V to VDD + 0.3 V Operating Temperature Range (Ambient) . . . . -40C to +85C Storage Temperature Range . . . . . . . . . . . . . -65C to +150C Lead Temperature (5 sec) TQFP . . . . . . . . . . . . . . . . +280C Lead Temperature (5 sec) PQFP . . . . . . . . . . . . . . . . . +280C
*
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ESD SENSITIVITY
The ADSP-217x is an ESD (electrostatic discharge) sensitive device. Electrostatic charges readily accumulate on the human body and equipment and can discharge without detection. Permanent damage may occur to devices subjected to high energy electrostatic discharges. The ADSP-217x features proprietary ESD protection circuitry to dissipate high energy discharges (Human Body Model). Per method 3015 of MIL-STD-883, the ADSP-217x has been classified as a Class 1 device. Proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Unused devices must be stored in conductive foam or shunts, and the foam should be discharged to the destination before devices are removed.
WARNING!
ESD SENSITIVE DEVICE
ADSP-2171/ADSP-2172 TIMING PARAMETERS
GENERAL NOTES
ADSP-2171/ADSP-2172
MEMORY REQUIREMENTS
Use the exact timing information given. Do not attempt to derive parameters from the addition or subtraction of others. While addition or subtraction would yield meaningful results for an individual device, the values given in this data sheet reflect statistical variations and worst cases. Consequently, you cannot meaningfully add up parameters to derive longer times.
TIMING NOTES
This chart links common memory device specification names and ADSP-2171/ADSP-2172 timing parameters for your convenience. Parameter Name Function tASW tAW tWRA tDW tDH tRDD tAA A0-A13, DMS, PMS Setup before WR Low A0-A13, DMS, PMS before WR Deasserted A0-A13, DMS, PMS Hold after WR Deasserted Data Setup before WR High Data Hold after WR High RD Low to Data Valid A0-A13, DMS, PMS, BMS to Data Valid Common Memory Device Specification Name Address Setup to Write Start Setup Address Setup to Write End Address Hold Time Data Setup Time Data Hold Time OE to Data Valid Address Access Time
Switching characteristics specify how the processor changes its signals. You have no control over this timing; it is dependent on the internal design. Timing requirements apply to signals that are controlled outside the processor, such as the data input for a read operation. Timing requirements guarantee that the processor operates correctly with another device. Switching characteristics tell you what the device will do under a given circumstance. Also, use the switching characteristics to ensure any timing requirement of a device connected to the processor (such as memory) is satisfied.
-18-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Clock Signals tCK is defined as 0.5 tCKI. The ADSP-2171/ADSP-2172 uses an input clock with a frequency equal to half the instruction rate; a clock (which is equivalent to 60 ns) yields a 30 ns processor cycle 16.67 MHz input (equivalent to 33 MHz). tCK values within the range of 0.5 tCKI period should be substituted for all relevant timing parameters to obtain specification value. Example: tCKH = 0.5tCK - 7 ns = 0.5 (30 ns) - 7 ns = 8 ns. Timing Requirement: tCKI tCKIL tCKIH CLKIN Period CLKIN Width Low CLKIN Width High 60 20 20 150 ns ns ns Min Max Unit
Switching Characteristic: tCKL tCKH tCKOH Control Signals Timing Requirement: tRSP RESET Width Low 5tCK1 ns CLKOUT Width Low CLKOUT Width High CLKIN High to CLKOUT High 0.5tCK - 7 0.5tCK - 7 0 ns ns ns
20
NOTE 1 Applies after power-up sequence is complete. Internal phase lock loop requires no more than 2000 CLKIN cycles assuming stable CLKIN (not including crystal oscillator start-up time).
tCKI tCKIH
CLKIN
tCKIL tCKOH tCKH
CLKOUT
tCKL
Figure 8. Clock Signals
REV. A
-19-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Interrupts and Flags Timing Requirement: tIFS tIFH IRQx or FI Setup before CLKOUT Low1, 2, 3 IRQx or FI Hold after CLKOUT High1, 2, 3 0.25tCK + 15 0.25tCK ns ns Min Max Unit
Switching Characteristic: tFOH tFOD Flag Output Hold after CLKOUT Low4 Flag Output Delay from CLKOUT Low4 0.5tCK - 7 0.5tCK + 5 ns ns
NOTES 1 If IRQx and FI inputs meet t IFS and tIFH setup/hold requirements, they will be recognized during the current clock cycle; otherwise the signals will be recognized on the following cycle. (Refer to "Interrupt Controller Operation" in the Program Control chapter of the User's Manual for further information on interrupt servicing.) 2 Edge-sensitive interrupts require pulse widths greater than 10 ns; level-sensitive interrupts must be held low until serviced. 3 IRQx = IRQ0, IRQ1, and IRQ2. 4 Flag Output = FL0, FL1, FL2, and FO.
tFOD
CLKOUT
tFOH
FLAG OUTPUTS
tIFH
IRQx FI
tIFS
Figure 9. Interrupts and Flags
-20-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Bus Request/Grant Timing Requirement: tBH tBS BR Hold after CLKOUT High1 BR Setup before CLKOUT Low1 0.25tCK + 2 0.25tCK + 17 ns ns Min Max Unit
Switching Characteristic: tSD tSDB tSE tSEC tSDBH tSEH CLKOUT High to DMS, PMS, BMS, RD, WR Disable DMS, PMS, BMS, RD, WR Disable to BG Low BG High to DMS, PMS, BMS, RD, WR Enable DMS, PMS, BMS, RD, WR Enable to CLKOUT High DMS, PMS, BMS, RD, WR Disable to BGH Low2 BGH High to DMS, PMS, BMS, RD, WR Enable2 0.25tCK + 16 0 0 0.25tCK - 7 0 0 ns
ns ns ns ns ns
NOTES 1 BR is an asynchronous signal. If BR meets the setup/hold requirements, it will be recognized during the current clock cycle; otherwise the signal will be recognized on the following cycle. Refer to the ADSP-2100 Family User's Manual for BR/BG cycle relationships. 2 BGH is asserted when the bus is granted and the processor requires control of the bus to continue.
tBH
CLKOUT
BR
tBS
CLKOUT
PMS, DMS BMS, RD WR
tSD
tSEC
BG
tSDB
tSE
BGH
t SDBH
tSEH
Figure 10. Bus Request-Bus Grant
REV. A
-21-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Memory Read Timing Requirement: tRDD tAA tRDH RD Low to Data Valid A0-A13, PMS, DMS, BMS to Data Valid Data Hold from RD High 0.5tCK - 9 + w 0.75tCK - 10.5 + w 0 ns ns ns Min Max Unit
Switching Characteristic: tRP tCRD tASR tRDA tRWR
w = wait states x tCK.
CLKOUT
RD Pulse Width CLKOUT High to RD Low A0-A13, PMS, DMS, BMS Setup before RD Low A0-A13, PMS, DMS, BMS Hold after RD Deasserted RD High to RD or WR Low
0.5tCK - 5 + w 0.25tCK - 5 0.25tCK - 6 0.25tCK - 3 0.5tCK - 5
0.25tCK + 7
ns ns ns ns ns
A0-A13 DMS, PMS BMS tRDA RD tASR tCRD D tRDD tAA WR tRDH tRP tRWR
Figure 11. Memory Read
-22-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Memory Write Switching Characteristic: tDW tDH tWP tWDE tASW tDDR tCWR tAW tWRA tWWR
w = wait states x t CK.
CLKOUT
Min
Max
Unit
Data Setup before WR High Data Hold after WR High WR Pulse Width WR Low to Data Enabled A0-A13, DMS, PMS Setup before WR Low Data Disable before WR or RD Low CLKOUT High to WR Low A0-A13, DMS, PMS, Setup before WR Deasserted A0-A13, DMS, PMS Hold after WR Deasserted WR High to RD or WR Low
0.5 tCK - 7 + w 0.25tCK - 2 0.5tCK - 5 + w 0 0.25tCK - 6 0.25tCK - 7 0.25tCK - 5 0.75tCK - 9 + w 0.25tCK - 3 0.5tCK - 5
0.25 tCK + 7
ns ns ns ns ns ns ns ns ns ns
A0-A13
DMS, PMS tWRA WR tAS W tAW tCWR D tDW tWDE RD tWP tDH tWWR tDDR
Figure 12. Memory Write
REV. A
-23-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Serial Ports Timing Requirement: tSCK tSCS tSCH tSCP SCLK Period DR/TFS/RFS Setup before SCLK Low DR/TFS/RFS Hold after SCLK Low SCLKIN Width 50 4 7 20 ns ns ns ns Min Max Unit
Switching Characteristic: tCC tSCDE tSCDV tRH tRD tSCDH tTDE tTDV tSCDD tRDV CLKOUT High to SCLKOUT SCLK High to DT Enable SCLK High to DT Valid TFS/RFSOUT Hold after SCLK High TFS/RFSOUT Delay from SCLK High DT Hold after SCLK High TFS(Alt) to DT Enable TFS(Alt) to DT Valid SCLK High to DT Disable RFS (Multichannel, Frame Delay Zero) to DT Valid
CLKOUT
0.25tCK 0 0
0.25tCK + 10 15 15
0 0 15 15 15
ns ns ns ns ns ns ns ns ns ns
tCC
tCC
tSCK tSCP
SCLK
tSCS
DR RFSIN TFSIN
tSCH
tSCP
tRD tRH
RFSOUT TFS OUT
tSCDD tSCDV tSCDE tSCDH
DT
tTDE tTDV TFS
ALTERNATE FRAME MODE
tRDV RFS
MULTICHANNEL MODE, FRAME DELAY 0 (MFD = 0)
Figure 13. Serial Ports
-24-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Host Interface Port Separate Data and Address (HMD1 = 0) Read Strobe and Write Strobe (HMD0 = 0) Timing Requirement: tHSU tHDSU tHWDH tHH tHRWP HA2-0 Setup before Start of Write or Read1, 2 Data Setup before End of Write3 Data Hold after End of Write3 HA2-0 Hold after End of Write or Read3, 4 Read or Write Pulse Width5 5 5 3 3 20 ns ns ns ns ns Min Max Unit
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1, 2 HACK Hold after End of Write or Read3, 4 Data Enabled after Start of Read2 Data Valid after Start of Read2 Data Hold after End of Read4 Data Disabled after End of Read4 0 0 0 0 7 15 15 18 ns ns ns ns ns ns
NOTES 1 Start of Write = HWR Low and HSEL Low. 2 Start of Read = HRD Low and HSEL Low. 3 End of Write = HWR High or HSEL High. 4 End of Read = HRD High or HSEL High. 5 Read Pulse Width = HRD Low and HSEL Low, Write Pulse Width = HWR Low and HSEL Low.
HA2-0 ADDRESS
HSEL
tHRWP tHSU
Host Write Cycle
HWR
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDSU
tHWDH
HA2-0
ADDRESS
HSEL
tHRWP tHSU
Host Read Cycle
HRD
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDE tHDD
tHRDH tHRDD
Figure 14. Host Interface Port (HMD1 = 0, HMD0 = 0)
REV. A
-25-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Host Interface Port Separate Data and Address (HMD1 = 0) Read Strobe and Write Strobe (HMD0 = 1) Timing Requirement: tHSU tHDSU tHWDH tHH tHRWP HA2-0, HRW Setup before Start of Write or Read1 Data Setup before End of Write2 Data Hold after End of Write2 HA2-0, HRW Hold after End of Write or Read2 Read or Write Pulse Width3 5 5 3 3 20 ns ns ns ns ns Min Max Unit
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1 HACK Hold after End of Write or Read2 Data Enabled after Start of Read1 Data Valid after Start of Read1 Data Hold after End of Read2 Data Disabled after End of Read2 0 0 0 0 7 15 15 18 ns ns ns ns ns ns
NOTES 1 Start of Write or Read = HDS Low and HSEL Low. 2 End of Write or Read = HDS High and HSEL High. 3 Read or Write Pulse Width = HDS Low and HSEL Low.
HA2-0 ADDRESS
tHRWP
HSEL
tHSU
Host Write Cycle
HRW
HDS
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDSU
tHWDH
HA2-0
ADDRESS
HSEL
tHRWP tHSU
Host Read Cycle
HRW
HDS
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDE tHDD
tHRDH tHRDD
Figure 15. Host Interface Port (HMD1 = 0, HMD0 = 1)
-26-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Host Interface Port Multiplexed Data and Address (HMD1 = 1) Read Strobe and Write Strobe (HMD0 = 0) Timing Requirement: tHALP tHASU tHAH tHALS tHDSU tHWDH tHRWP ALE Pulse Width HAD15-0 Address Setup, before ALE Low HAD15-0 Address Hold after ALE Low Start of Write or Read after ALE Low1, 2 HAD15-0 Data Setup before End of Write3 HAD15-0 Data Hold after End of Write3 Read or Write Pulse Width4 10 5 2 10 5 3 20 ns ns ns ns ns ns ns Min Max Unit
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1, 2 HACK Hold after End of Write or Read3, 5 HAD15-0 Data Enabled after Start of Read2 HAD15-0 Data Valid after Start of Read2 HAD15-0 Data Hold after End of Read HAD15-0 Data Disabled after End of Read5 0 0 0 0 7 15 15 18 ns ns ns ns ns ns
NOTES 1 Start of Write = HWR Low and HSEL Low. 2 Start of Read = HRD Low and HSEL Low. 3 End of Write = HWR High or HSEL High. 4 Read Pulse Width = HRD Low and HSEL Low, Write Pulse Width = HWR Low and HSEL Low. 5 End of Read = HRD High or HSEL High.
ALE
tHALP
HSEL
tHRWP tHALS
Host Write Cycle
HWR
tHSHK
HACK
tHKH
tHASU
tHAH
DATA
HD15-0
ADDRESS
tHDSU
tHWDH
ALE
tHALP
Host Read Cycle
tHRWP tHALS
HSEL
HRD
tHSHK
HACK
tHKH
tHASU
tHAH
tHDE
DATA
HAD15-0
ADDRESS
tHDD
tHRDH tHRDD
Figure 16. Host Interface Port (HMD1 = 1, HMD0 = 0)
REV. A
-27-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter Min Max Unit
Host Interface Port
Multiplexed Data and Address (HMD1 = 1) Read Strobe and Write Strobe (HMD0 = 1) Timing Requirement: tHALP tHASU tHAH tHALS tHSU tHDSU tHWDH tHH tHRWP ALE Pulse Width HAD15-0 Address Setup before ALE Low HAD15-0 Address Hold after ALE Low Start of Write or Read after ALE Low1 HRW Setup before Start of Write or Read1 HAD15-0 Data Setup before End of Write2 HAD15-0 Data Hold after End of Write2 HRW Hold after End of Write or Read2 Read or Write Pulse Width3 10 5 2 10 5 5 3 3 20 ns ns ns ns ns ns ns ns ns
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1 HACK Hold after End of Write or Read2 HAD15-0 Data Enabled after Start of Read1 HAD15-0 Data Valid after Start of Read1 HAD15-0 Data Hold after End of Read2 HAD15-0 Data Disabled after End of Read2 0 0 0 0 7 15 15 18 ns ns ns ns ns ns
NOTES 1 Start of Write or Read = HDS Low and HSEL Low. 2 End of Write or Read = HDS High and HSEL High. 3 Read or Write Pulse Width = HDS Low and HSEL Low.
ALE
tHALP tHRWP
HSEL
tHALS
tHH
Host Write Cycle
HRW
tHSU
HDS
tHSHK
HACK
tHKH
tHASU
tHAH
HD15-0
ADDRESS
DATA
tHDSU
ALE
tHWDH
tHALP
HSEL
tHALS
tHRWP
HRW
tHH tHSU
Host Read Cycle
HDS
tHSHK
HACK
tHKH
tHASU
tHAH tHDE
HD15-0
ADDRESS
DATA
tHDD
tHRDH tHRDD
Figure 17. Host Interface Port (HMD1 = 1, HMD0 = 1)
-28-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
ENVIRONMENTAL CONDITIONS
POWER, INTERNAL 1
400 375 350 325 301mW VDD = 5.5V VDD = 5.0V 186mW VDD = 4.5V 148mW 382mW
Ambient Temperature Rating: TAMB = TCASE - (PD x CA) TCASE = Case Temperature in C PD = Power Dissipation in W CA = Thermal Resistance (Case-to-Ambient) JA = Thermal Resistance (Junction-to-Ambient) JC = Thermal Resistance (Junction-to-Case) Package TQFP PQFP JA 50C/W 41C/W JC 2C/W 10C/W CA 48C/W 31C/W
POWER (P INT ) - mW
300 275 250 225 200 175 150 125 110mW
229mW
13 15 17 19 21 23 25 27 29 31 33 1/ tCK - MHz
POWER, IDLE 1, 2
POWER DISSIPATION
85 80 75 70 82mW
POWER (PIDLE ) - mW
To determine total power dissipation in a specific application, the following equation should be applied for each output: C x VDD2 x f C = load capacitance, f = output switching frequency.
Example:
65 60 55 50 45 40 35 30 26mW 37mW 48mW
VDD = 5.5V
64mW
In an application where external data memory is used and no other outputs are active, power dissipation is calculated as follows: Assumptions:
VDD = 5.0V 48mW VDD = 4.5V
* * * *
External data memory is accessed every cycle with 50% of the address pins switching. External data memory writes occur every other cycle with 50% of the data pins switching. Each address and data pin has a 10 pF total load at the pin. The application operates at VDD = 5.0 V and tCK = 30 ns.
POWER (PIDLE n ) - mW
13 15 17 19 21 23 25 27 29 31 33 1/ tCK - MHz
POWER, IDLE n MODES 3
72 82mW 68 64 60 56 52 48 44 40 36 37mW 31mW 64mW
Total Power Dissipation = PINT + (C x VDD2 x f ) PINT = internal power dissipation from Power vs. Frequency graph (Figure 18). (C x VDD2 x f ) is calculated for each output:
# of Pins x C Address, DMS Data Output, WR RD CLKOUT 8 9 1 1 x 10 pF x 10 pF x 10 pF x 10 pF x VDD2 x f x 52 V x 52 V x 52 V x 52 V x 33.3 MHz x 16.67 MHz x 16.67 MHz x 33.3 MHz = 66.6 mW = 37.5 mW = 4.2 mW = 8.3 mW 116.6 mW
IDLE;
32 28 24 20 16 20mW 23mW
IDLE (16) IDLE (128)
28mW
Total power dissipation for this example is PINT + 116.6 mW.
13 15 17 19 21 23 25 27 29 31 33 1/ tCK - MHz VALID FOR ALL TEMPERATURE GRADES.
1 POWER 2 IDLE
REFLECTS DEVICE OPERATING WITH NO OUTPUT LOADS. REFERS TO ADSP-2171 STATE OF OPERATION DURING EXECUTION OF IDLE INSTRUCTION. DEASSERTED PINS ARE DRIVEN TO EITHER VDD OR GND. POWER REFLECTS DEVICE OPERATING WITH CLKOUT DISABLED. 3 TYPICAL POWER DISSIPATION AT 5.0V V DD DURING EXECUTION OF IDLE N INSTRUCTION (CLOCK FREQUENCY REDUCTION). POWER REFLECTS DEVICE OPERATING WITH CLKOUT DISABLED.
Figure 18. Power vs. Frequency
REV. A
-29-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
CAPACITIVE LOADING
tDECAY, is dependent on the capacitative load, CL, and the current load, iL, on the output pin. It can be approximated by the following equation:
Figures 19 and 20 show the capacitive loading characteristics of the ADSP-2171/ADSP-2172.
28
t DECAY =
from which
CL * 0.5V iL
t DIS = t MEASURED - t DECAY
24
RISE TIME (0.4V - 2.4V) - ns
20 16 12 8 VDD = 4.5V
is calculated. If multiple pins (such as the data bus) are disabled, the measurement value is that of the last pin to stop driving.
INPUT 3.0V 1.5V 0.0V 2.0V 1.5V 0.3V
OUTPUT
4
25
50
75 100 CL - pF
125
150
Figure 21. Voltage Reference Levels for AC Measurements (Except Output Enable/Disable)
Output Enable Time
Figure 19. Typical Output Rise Time vs. Load Capacitance, CL (at Maximum Ambient Operating Temperature)
+14
VALID OUTPUT DELAY OR HOLD - ns
+12 +10 +8 +4 +2
Output pins are considered to be enabled when that have made a transition from a high-impedance state to when they start driving. The output enable time (tENA) is the interval from when a reference signal reaches a high or low voltage level to when the output has reached a specified high or low trip point, as shown in the Output Enable/Disable diagram. If multiple pins (such as the data bus) are enabled, the measurement value is that of the first pin to start driving.
REFERENCE SIGNAL
tMEASURED tENA
VOH
NOMINAL -2
tDIS
VOH (MEASURED) - 0.5V 2.0V 1.0V
VOH (MEASURED)
(MEASURED) OUTPUT VOL (MEASURED) +0.5V VOL
25 50 75 100 CL - pF 125 150
(MEASURED)
tDECAY
OUTPUT STOPS DRIVING
VOL (MEASURED) OUTPUT STARTS DRIVING
Figure 20. Typical Output Valid Delay or Hold vs. Load Capacitance, CL (at Maximum Ambient Operating Temperature)
TEST CONDITIONS Output Disable Time
HIGH-IMPEDANCE STATE. TEST CONDITIONS CAUSE THIS VOLTAGE LEVEL TO BE APPROXIMATELY 1.5V.
Figure 22. Output Enable/Disable
IOL
Output pins are considered to be disabled when they have stopped driving and started a transition from the measured output high or low voltage to a high impedance state. The output disable time (tDIS) is the difference of tMEASURED and tDECAY, as shown in the Output Enable/Disable diagram. The time is the interval from when a reference signal reaches a high or low voltage level to when the output voltages have changed by 0.5 V from the measured output high or low voltage. The decay time,
TO OUTPUT PIN
+1.5V 50pF
IOH
Figure 23. Equivalent Device Loading for AC Measurements (Including All Fixtures)
-30-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173-SPECIFICATIONS
RECOMMENDED OPERATING CONDITIONS
K Grade Parameter VDD TAMB Supply Voltage Ambient Operating Temperature Min 3.0 0 Max 3.6 +70 Min 3.0 -40 B Grade Max 3.6 +85 Unit V C
ELECTRICAL CHARACTERISTICS
Parameter VIH VIH VIH VIL VOH Hi-Level Input Voltage Hi-Level CLKIN Voltage Hi-Level RESET Voltage Lo-Level Input Voltage1, 3 Hi-Level Output Voltage1, 4, 5
1, 2
Test Conditions @ VDD = max @ VDD = max @ VDD = max @ VDD = min @ VDD = min IOH = -0.5 mA @ VDD = min IOH = -100 mA6 @ VDD = min IOL = 2 mA @ VDD = max VIN = VDD max @ VDD = max VIN = 0 V @ VDD = max, VIN = VDD max8 @ VDD = max, VIN = 0 V8 @ VDD = max @ VDD = max tCK = 50 ns11 Lowest Power Mode12 @ VIN = 2.5 V, fIN = 1.0 MHz, TAMB = 25C @ VIN = 2.5 V, fIN = 1.0 MHz, TAMB = 25C
K/B Grades Min Max 2.0 2.0 2.2 0.4 2.4 VDD - 0.3 0.4 10 10 10 10 7 27 100
Unit V V V V V V V A A A A mA mA A pF
VOL IIH IIL IOZH IOZL IDD IDD IDD CI CO
Lo-Level Output Voltage1, 4, 5 Hi-Level Input Current3 Lo-Level Input Current3 Tristate Leakage Current7 Tristate Leakage Current7 Supply Current (Idle)9, 10 Supply Current (Dynamic)10 Supply Current (Powerdown)10 Input Pin Capacitance3, 6, 13 Output Pin Capacitance6, 7, 13, 14
8
8
pF
NOTES 1 Bidirectional pins: D0-D23, RFS0, RFS1, SCLK0, SCLK1, TFS0, TFS1, HD0-HD15/HAD0-HAD15. 2 Input only pins: RESET, IRQ2, BR, MMAP, DR0, DR1, HSEL, HSIZE, BMODE, HMD0, HMD1, HRD/HWR, HWR/HDS, PWD, HA2/ALE, HA1-0. 3 Input only pins: CLKIN, RESET, IRQ2, BR, MMAP, DR0, DR1, HSEL, HSIZE, BMODE, HMD0, HMD1, HRD/HWR, HWR/HDS, PWD, HA2/ALE, HA1-0. 4 Output pins: BG, PMS, DMS, BMS, RD, WR, PWDACK, A0-A13, DT0, DT1, CLKOUT, HACK, FL2-0, BGH. 5 Although specified for TTL outputs, all ADSP-2173 outputs are CMOS-compatible and will drive to V DD and GND, assuming no dc loads. 6 Guaranteed but not tested. 7 Three-statable pins: A0-A13, D0-D23, PMS, DMS, BMS, RD, WR, DT0, DT1, SCLK0, SCLK1, TFS0, TFS1, RFS0, RSF1, HD0-HD15/HAD0-HAD15. 8 0 V on BR, CLKIN Active (to force three-state condition). 9 Idle refers to ADSP-2173 state of operation during execution of IDLE instruction. Deasserted pins are driven to either V DD or GND. Current reflects device operation with CLKOUT disabled. 10 Current reflects device operating with no output loads. 11 VIN = 0.4 V and 2.4 V. For typical figures for supply currents, refer to "Power Dissipation" section. 12 See Chapter 9, of the ADSP-2100 Family User's Manual for details. 13 Applies to TQFP and PQFP package types. 14 Output pin capacitance is the capacitve load for any three-state output pin. Specifications subject to change without notice.
REV. A
-31-
ADSP-2171/ADSP-2172/ADSP-2173 ADSP-2173 TIMING PARAMETERS
GENERAL NOTES MEMORY REQUIREMENTS
Use the exact timing information given. Do not attempt to derive parameters from the addition or subtraction of others. While addition or subtraction would yield meaningful results for an individual device, the values given in this data sheet reflect statistical variations and worst cases. Consequently, you cannot meaningfully add up parameters to derive longer times.
TIMING NOTES
This chart links common memory device specification names and ADSP-2173 timing parameters for your convenience. Parameter Name Function tASW tAW tWRA tDW tDH tRDD tAA A0-A13, DMS, PMS Setup before WR Low A0-A13, DMS, PMS before WR Deasserted A0-A13, DMS, PMS Hold after WR Deasserted Data Setup before WR High Data Hold after WR High RD Low to Data Valid A0-A13, DMS, PMS, BMS to Data Valid Common Memory Device Specification Name Address Setup to Write Start Setup Address Setup to Write End Address Hold Time Data Setup Time Data Hold Time OE to Data Valid Address Access Time
Switching characteristics specify how the processor changes its signals. You have no control over this timing; it is dependent on the internal design. Timing requirements apply to signals that are controlled outside the processor, such as the data input for a read operation. Timing requirements guarantee that the processor operates correctly with another device. Switching characteristics tell you what the device will do under a given circumstance. Also, use the switching characteristics to ensure any timing requirement of a device connected to the processor (such as memory) is satisfied.
-32-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Clock Signals tCK is defined as 0.5 tCKI. The ADSP-2173 uses an input clock with a frequency equal to half the instruction rate; a 10.0 MHz input clock (which is equivalent to 100 ns) yields a 50 ns processor cycle (equivalent to 20 MHz). tCK values within the range of 0.5 tCKI period should be substituted for all relevant timing parameters to obtain specification value. Example: tCKH = 0.5tCK - 10 ns = 0.5 (50 ns) - 10 ns = 15 ns. Timing Requirement: tCKI tCKIL tCKIH CLKIN Period CLKIN Width Low CLKIN Width High 100 20 20 160 ns ns ns Min Max Unit
Switching Characteristic: tCKL tCKH tCKOH Control Signals Timing Requirement: tRSP RESET Width Low 5tCK1 ns CLKOUT Width Low CLKOUT Width High CLKIN High to CLKOUT High 0.5tCK - 10 0.5tCK - 10 0 ns ns ns
25
NOTE 1 Applies after power-up sequence is complete. Internal phase lock loop requires no more than 2000 CLKIN cycles assuming stable CLKIN (not including crystal oscillator start-up time).
tCKI tCKIH
CLKIN
tCKIL tCKOH tCKH
CLKOUT
tCKL
Figure 24. Clock Signals
REV. A
-33-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Interrupts and Flags Timing Requirement: tIFS tIFH IRQx or FI Setup before CLKOUT Low1, 2, 3 IRQx or FI Hold after CLKOUT High1, 2, 3 0.25tCK + 23 0.25tCK ns ns Min Max Unit
Switching Characteristic: tFOH tFOD Flag Output Hold after CLKOUT Low4 Flag Output Delay from CLKOUT Low4 0.5tCK - 10 0.5tCK + 5 ns ns
NOTES 1 If IRQx and FI inputs meet t IFS and tIFH setup/hold requirements, they will be recognized during the current clock cycle; otherwise the signals will be recognized on the following cycle. (Refer to "Interrupt Controller Operation" in the Program Control chapter of the User's Manual for further information on interrupt servicing.) 2 Edge-sensitive interrupts require pulse widths greater than 10 ns; level-sensitive interrupts must be held low until serviced. 3 IRQx = IRQ0, IRQ1, and IRQ2. 4 Flag Output = FL0, FL1, FL2, and FO.
tFOD
CLKOUT
tFOH
FLAG OUTPUTS
tIFH
IRQx FI
tIFS
Figure 25. Interrupts and Flags
-34-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Bus Request/Grant Timing Requirement: tBH tBS BR Hold after CLKOUT High1 BR Setup before CLKOUT Low1 0.25tCK + 2 0.25tCK + 22 ns ns Min Max Unit
Switching Characteristic: tSD tSDB tSE tSEC tSDBH tSEH CLKOUT High to DMS, PMS, BMS, RD, WR Disable DMS, PMS, BMS, RD, WR Disable to BG Low BG High to DMS, PMS, BMS, RD, WR Enable DMS, PMS, BMS, RD, WR Enable to CLKOUT High DMS, PMS, BMS, RD, WR Disable to BGH Low2 BGH High to DMS, PMS, BMS, RD, WR Enable2 0.25tCK + 16 0 0 0.25tCK - 10 0 0 ns
ns ns ns ns ns
NOTES 1 BR is an asynchronous signal. If BR meets the setup/hold requirements, it will be recognized during the current clock cycle; otherwise the signal will be recognized on the following cycle. Refer to the ADSP-2100 Family User's Manual for BR/BG cycle relationships. 2 BGH is asserted when the bus is granted and the processor requires control of the bus to continue.
tBH
CLKOUT
BR
tBS
CLKOUT
PMS, DMS BMS, RD WR
tSD
tSEC
BG
tSDB
tSE
BGH
t SDBH
tSEH
Figure 26. Bus Request-Bus Grant
REV. A
-35-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Memory Read Timing Requirement: tRDD tAA tRDH RD Low to Data Valid A0-A13, PMS, DMS, BMS to Data Valid Data Hold from RD High 0.5tCK - 15 + w 0.75tCK - 20.5 + w 0 ns ns ns Min Max Unit
Switching Characteristic: tRP tCRD tASR tRDA tRWR
w = wait states x tCK.
CLKOUT
RD Pulse Width CLKOUT High to RD Low A0-A13, PMS, DMS, BMS Setup before RD Low A0-A13, PMS, DMS, BMS Hold after RD Deasserted RD High to RD or WR Low
0.5tCK - 5 + w 0.25tCK - 5 0.25tCK - 7 0.25tCK - 3 0.5tCK - 5
0.25tCK + 10
ns ns ns ns ns
A0-A13 DMS, PMS BMS tRDA RD tASR tCRD D tRDD tAA WR tRDH tRP tRWR
Figure 27. Memory Read
-36-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Memory Write Switching Characteristic: tDW tDH tWP tWDE tASW tDDR tCWR tAW tWRA tWWR
w = wait states x t CK.
CLKOUT
Min
Max
Unit
Data Setup before WR High Data Hold after WR High WR Pulse Width WR Low to Data Enabled A0-A13, DMS, PMS Setup before WR Low Data Disable before WR or RD Low CLKOUT High to WR Low A0-A13, DMS, PMS, Setup before WR Deasserted A0-A13, DMS, PMS Hold after WR Deasserted WR High to RD or WR Low
0.5 tCK - 7 + w 0.25tCK - 2 0.5tCK - 5 + w 0 0.25tCK - 7 0.25tCK - 7 0.25tCK - 5 0.75tCK - 11.5 + w 0.25tCK - 3 0.5tCK - 5
0.25 tCK + 10
ns ns ns ns ns ns ns ns ns ns
A0-A13
DMS, PMS tWRA WR tAS W tAW tCWR D tDW tWDE RD tWP tDH tWWR tDDR
Figure 28. Memory Write
REV. A
-37-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Serial Ports Timing Requirement: tSCK tSCS tSCH tSCP SCLK Period DR/TFS/RFS Setup before SCLK Low DR/TFS/RFS Hold after SCLK Low SCLKIN Width 76.9 8 10 28 ns ns ns ns Min Max Unit
Switching Characteristic: tCC tSCDE tSCDV tRH tRD tSCDH tTDE tTDV tSCDD tRDV CLKOUT High to SCLKOUT SCLK High to DT Enable SCLK High to DT Valid TFS/RFSOUT Hold after SCLK High TFS/RFSOUT Delay from SCLK High DT Hold after SCLK High TFS(Alt) to DT Enable TFS(Alt) to DT Valid SCLK High to DT Disable RFS (Multichannel, Frame Delay Zero) to DT Valid
CLKOUT
0.25tCK 0 0
0.25tCK + 15 20 20
0 0 19 25 20
ns ns ns ns ns ns ns ns ns ns
tCC
tCC
tSCK tSCP
SCLK
tSCS
DR RFSIN TFSIN
tSCH
tSCP
tRD tRH
RFSOUT TFS OUT
tSCDD tSCDV tSCDE tSCDH
DT
tTDE tTDV TFS
ALTERNATE FRAME MODE
tRDV RFS
MULTICHANNEL MODE, FRAME DELAY 0 (MFD = 0)
Figure 29. Serial Ports
-38-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Host Interface Port Separate Data and Address (HMD1 = 0) Read Strobe and Write Strobe (HMD0 = 0) Timing Requirement: tHSU tHDSU tHWDH tHH tHRWP HA2-0 Setup before Start of Write or Read1, 2 Data Setup before End of Write3 Data Hold after End of Write3 HA2-0 Hold after End of Write or Read3, 4 Read or Write Pulse Width5 8 8 3 3 30 ns ns ns ns ns Min Max Unit
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1, 2 HACK Hold after End of Write or Read3, 4 Data Enabled after Start of Read2 Data Valid after Start of Read2 Data Hold after End of Read4 Data Disabled after End of Read4 0 0 0 0 15 20 20 23 ns ns ns ns ns ns
NOTES 1 Start of Write = HWR Low and HSEL Low. 2 Start of Read = HRD Low and HSEL Low. 3 End of Write = HWR High or HSEL High. 4 End of Read = HRD High or HSEL High. 5 Read Pulse Width = HRD Low and HSEL Low, Write Pulse Width = HWR Low and HSEL Low.
HA2-0 ADDRESS
HSEL
tHRWP tHSU
Host Write Cycle
HWR
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDSU
tHWDH
HA2-0
ADDRESS
HSEL
tHRWP tHSU
Host Read Cycle
HRD
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDE tHDD
tHRDH tHRDD
Figure 30. Host Interface Port (HMD1 = 0, HMD0 = 0)
REV. A
-39-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Host Interface Port Separate Data and Address (HMD1 = 0) Read Strobe and Write Strobe (HMD0 = 1) Timing Requirement: tHSU tHDSU tHWDH tHH tHRWP HA2-0, HRW Setup before Start of Write or Read1 Data Setup before End of Write2 Data Hold after End of Write2 HA2-0, HRW Hold after End of Write or Read2 Read or Write Pulse Width3 8 8 3 3 30 ns ns ns ns ns Min Max Unit
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1 HACK Hold after End of Write or Read2 Data Enabled after Start of Read1 Data Valid after Start of Read1 Data Hold after End of Read2 Data Disabled after End of Read2 0 0 0 0 15 20 20 23 ns ns ns ns ns ns
NOTES 1 Start of Write or Read = HDS Low and HSEL Low. 2 End of Write or Read = HDS High and HSEL High. 3 Read or Write Pulse Width = HDS Low and HSEL Low.
HA2-0 ADDRESS
tHRWP
HSEL
tHSU
Host Write Cycle
HRW
HDS
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDSU
tHWDH
HA2-0
ADDRESS
HSEL
tHRWP tHSU
Host Read Cycle
HRW
HDS
tHH
HACK
tHSHK
HD15-0 DATA
tHKH
tHDE tHDD
tHRDH tHRDD
Figure 31. Host Interface Port (HMD1 = 0, HMD0 = 1)
-40-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Host Interface Port Multiplexed Data and Address (HMD1 = 1) Read Strobe and Write Strobe (HMD0 = 0) Timing Requirement: tHALP tHASU tHAH tHALS tHDSU tHWDH tHRWP ALE Pulse Width HAD15-0 Address Setup, before ALE Low HAD15-0 Address Hold after ALE Low Start of Write or Read after ALE Low1, 2 HAD15-0 Data Setup before End of Write3 HAD15-0 Data Hold after End of Write3 Read or Write Pulse Width5 15 5 2 15 8 3 30 ns ns ns ns ns ns ns Min Max Unit
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1, 2 HACK Hold after End of Write or Read3, 4 HAD15-0 Data Enabled after Start of Read2 HAD15-0 Data Valid after Start of Read2 HAD15-0 Data Hold after End of Read HAD15-0 Data Disabled after End of Read4 0 0 0 0 15 20 20 23 ns ns ns ns ns ns
NOTES 1 Start of Write = HWR Low and HSEL Low. 2 Start of Read = HRD Low and HSEL Low. 3 End of Write = HWR High or HSEL High. 4 End of Read = HRD High or HSEL High. 5 Read Pulse Width = HRD Low and HSEL Low, Write Pulse Width = HWR Low and HSEL Low.
ALE
tHALP
HSEL
tHRWP tHALS
Host Write Cycle
HWR
tHSHK
HACK
tHKH
tHASU
tHAH
DATA
HD15-0
ADDRESS
tHDSU
tHWDH
ALE
tHALP
tHRWP tHALS
Host Read Cycle
HSEL
HRD
tHSHK
HACK
tHKH
tHASU
tHAH
tHDE
DATA
HAD15-0
ADDRESS
tHDD
tHRDH tHRDD
Figure 32. Host Interface Port (HMD1 = 1, HMD0 = 0)
REV. A
-41-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter Min Max Unit
Host Interface Port
Multiplexed Data and Address (HMD1 = 1) Read Strobe and Write Strobe (HMD0 = 1) Timing Requirement: tHALP tHASU tHAH tHALS tHSU tHDSU tHWDH tHH tHRWP ALE Pulse Width HAD15-0 Address Setup before ALE Low HAD15-0 Address Hold after ALE Low Start of Write or Read after ALE Low1 HRW Setup before Start of Write or Read1 HAD15-0 Data Setup before End of Write2 HAD15-0 Data Hold after End of Write2 HRW Hold after End of Write or Read2 Read or Write Pulse Width3 15 5 2 15 8 8 3 3 30 ns ns ns ns ns ns ns ns ns
Switching Characteristic: tHSHK tHKH tHDE tHDD tHRDH tHRDD HACK Low after Start of Write or Read1 HACK Hold after End of Write or Read2 HAD15-0 Data Enabled after Start of Read1 HAD15-0 Data Valid after Start of Read1 HAD15-0 Data Hold after End of Read2 HAD15-0 Data Disabled after End of Read2 0 0 0 0 15 20 20 23 ns ns ns ns ns ns
NOTES 1 Start of Write or Read = HDS Low and HSEL Low. 2 End of Write or Read = HDS High and HSEL High. 3 Read or Write Pulse Width = HDS Low and HSEL Low.
ALE
tHALP tHRWP
HSEL
tHALS
tHH
Host Write Cycle
HRW
tHSU
HDS
tHSHK
HACK
tHKH
tHASU
tHAH
HD15-0
ADDRESS
DATA
tHDSU
ALE
tHWDH
tHALP
HSEL
tHALS
tHRWP
HRW
tHH tHSU
Host Read Cycle
HDS
tHSHK
HACK
tHKH
tHASU
tHAH tHDE
HD15-0
ADDRESS
DATA
tHDD
tHRDH tHRDD
Figure 33. Host Interface Port (HMD1 = 1, HMD0 = 1)
-42-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
90
POWER, INTERNAL 1
89 mW
ENVIRONMENTAL CONDITIONS
85 80 POWER (P INT ) - mW 75 70 65 60 55 50 45 44 mW 55 mW 57 mW 71 mW
Ambient Temperature Rating: TAMB = TCASE - (PD x CA) TCASE = Case Temperature in C PD = Power Dissipation in W CA = Thermal Resistance (Case-to-Ambient) JA = Thermal Resistance (Junction-to-Ambient) JC = Thermal Resistance (Junction-to-Case) Package TQFP PQFP JA 50C/W 41C/W JC 2C/W 10C/W CA 48C/W 31C/W
40 35 32 mW
12
13
14
15
16
17
18
19
20
1/ tCK - MHz
POWER DISSIPATION
POWER, IDLE 1, 2
20 19 18 POWER (PIDLE ) - mW 17 16 15 14 13 12 11 10 8.5 mW 11.8 mW 15.5 mW 12.7 mW 16.2 mW 20.5 mW
To determine total power dissipation in a specific application, the following equation should be applied for each output: C x VDD2 x f C = load capacitance, f = output switching frequency.
Example:
In an application where external data memory is used and no other outputs are active, power dissipation is calculated as follows: Assumptions:
* * * *
External data memory is accessed every cycle with 50% of the address pins switching. External data memory writes occur every other cycle with 50% of the data pins switching. Each address and data pin has a 10 pF total load at the pin. The application operates at VDD = 3.3 V and tCK = 50 ns.
POWER (PIDLE n ) - mW
9
12
13
14
15
16
17
18
19
20
1/ tCK - MHz
POWER, IDLE n MODES 3
16 15 14 13 12 11 11.8 mW 10 9 8 7 6 6.2 mW 5 12 13 14 15 16 17 18 19 20 6.8 mW 7.2 mW IDLE (128) 7.8 mW IDLE (16) 16.2 mW IDLE;
Total Power Dissipation = PINT + (C x VDD2 x f ) PINT = internal power dissipation from Power vs. Frequency graph (Figure 18). (C x VDD2 x f ) is calculated for each output:
# of Pins x C Address, DMS Data Output, WR RD CLKOUT 8 9 1 1 x 10 pF x 10 pF x 10 pF x 10 pF x VDD2 x 3.32 V x 3.32 V x 3.32 V x 3.32 V xf x 20 MHz x 10 MHz x 10 MHz x 20 MHz = 17.4 mW = 9.8 mW = 1.1 mW = 2.2 mW 30.5 mW
1/ tCK - MHz VALID FOR ALL TEMPERATURE GRADES.
1 2
Total power dissipation for this example is PINT + 30.5 mW.
POWER REFLECTS DEVICE OPERATING WITH NO OUTPUT LOADS. IDLE REFERS TO ADSP-2173 STATE OF OPERATION DURING EXECUTION OF IDLE INSTRUCTION. DEASSERTED PINS ARE DRIVEN TO EITHER VDD OR GND. POWER REFLECTS DEVICE OPERATING WITH CLKOUT DISABLED. 3 TYPICAL POWER DISSIPATION AT 3.3V V DD DURING EXECUTION OF IDLE n INSTRUCTION (CLOCK FREQUENCY REDUCTION). POWER REFLECTS DEVICE OPERATING WITH CLKOUT DISABLED.
Figure 34. Power vs. Frequency
REV. A
-43-
ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
CAPACITIVE LOADING
tDECAY, is dependent on the capacitative load, CL, and the current load, iL, on the output pin. It can be approximated by the following equation:
Figures 35 and 36 show the capacitive loading characteristics of the ADSP-2173. from which
t DECAY =
CL * 0.5V iL
t DIS = t MEASURED - t DECAY
28 RISE TIME (0.4 V - 2.4 V) - ns 24 VDD = 3.3 V 20 INPUT 16 VDD 2
is calculated. If multiple pins (such as the data bus) are disabled, the measurement value is that of the last pin to stop driving.
12 OUTPUT 8
VDD 2
25
50
75
100 CL - pF
125
150
Figure 37. Voltage Reference Levels for AC Measurements (Except Output Enable/Disable)
Output Enable Time
Figure 35. Typical Output Rise Time vs. Load Capacitance, CL (at Maximum Ambient Operating Temperature)
+14
VALID OUTPUT DELAY OR HOLD - ns
+12 +10 +8 +4 +2
Output pins are considered to be enabled when that have made a transition from a high-impedance state to when they start driving. The output enable time (tENA) is the interval from when a reference signal reaches a high or low voltage level to when the output has reached a specified high or low trip point, as shown in the Output Enable/Disable diagram. If multiple pins (such as the data bus) are enabled, the measurement value is that of the first pin to start driving.
REFERENCE SIGNAL
tMEASURED tENA
VOH
NOMINAL -2
tDIS
VOH (MEASURED) - 0.5V 2.0V 1.0V
VOH (MEASURED)
(MEASURED) OUTPUT VOL (MEASURED) +0.5V VOL
25 50 75 100 CL - pF 125 150
(MEASURED)
tDECAY
OUTPUT STOPS DRIVING
VOL (MEASURED) OUTPUT STARTS DRIVING
Figure 36. Typical Output Valid Delay or Hold vs. Load Capacitance, CL (at Maximum Ambient Operating Temperature)
TEST CONDITIONS Output Disable Time
HIGH-IMPEDANCE STATE. TEST CONDITIONS CAUSE THIS VOLTAGE LEVEL TO BE APPROXIMATELY 1.5V.
Figure 38. Output Enable/Disable
IOL
Output pins are considered to be disabled when they have stopped driving and started a transition from the measured output high or low voltage to a high impedance state. The output disable time (tDIS) is the difference of tMEASURED and tDECAY, as shown in the Output Enable/Disable diagram. The time is the interval from when a reference signal reaches a high or low voltage level to when the output voltages have changed by 0.5 V from the measured output high or low voltage. The decay time,
TO OUTPUT PIN
50pF
VDD 2
IOH
Figure 39. Equivalent Device Loading for AC Measurements (Including All Fixtures)
-44-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
128-Lead TQFP Package Pinout
128 1 GND GND HA2/ALE HA1 HA0 HSEL HD5 HD4 HD3 HD2 HD1 HD0 V DD GND V DD A0 A1 A3 A2 A4 A5 A6 A7 XTAL CLKIN CLKOUT GND A8 A9 A10 A11 A12 A13 NC MMAP NC NC PWD 38 39
HWR/HDS HRD/HRW HSIZE HD6 HD7 HD8 HD9 HD10 VDD HD11 HD12 HD13 HD14 HD15 PWDACK BMS DMS PMS VDD GND GND WR RD NC NC NC 103 102 NC NC D23 D22 D21 D20 D19 GND D18 D17 D16 D15 D14 D13 D12 D11 VDD GND D10 D9 D8 D7 D6 D5 D4 D3 GND D2 D1 D0 BG NC BR NC NC NC BGH NC 65 64
TOP VIEW (PINS DOWN)
NC = NO CONNECT
REV. A
IRQ2 NC BMODE NC NC VDD GND RESET NC HACK HMD0 HMD1 DT0 TFS0 RFS0 DR0 SCLK0 DT1/FO TFS1/IRQ1 RFS1/IRQ0 GND DR1/FI SCLK1 FL0 FL1 FL2
-45-
ADSP-2171/ADSP-2172/ADSP-2173
TQFP Pin Configurations
TQFP Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Pin Name GND GND HA2/ALE HA1 HA0 HSEL HD5 HD4 HD3 HD2 HD1 HD0 VDD GND VDD A0 A1 A2 A3 A4 A5 A6 A7 XTAL CLKIN CLKOUT GND A8 A9 A10 A11 A12
TQFP Number 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
Pin Name A13 NC MMAP NC NC PWD IRQ2 NC BMODE NC NC VDD GND RESET NC HACK HMD0 HMD1 DT0 TFS0 RFS0 DR0 SCLK0 DT1/FO TFS1/IRQ1 RFS1/IRQ0 GND DR1/F1 SCLK1 FL0 FL1 FL2
TQFP Number 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
Pin Name NC BGH NC NC NC BR NC BG D0 D1 D2 GND D3 D4 D5 D6 D7 D8 D9 D10 GND VDD D11 D12 D13 D14 D15 D16 D17 D18 GND D19
TQFP Number 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128
Pin Name D20 D21 D22 D23 NC NC NC NC NC RD WR GND GND VDD PMS DMS BMS PWDACK HD15 HD14 HD13 HD12 HD11 VDD HD10 HD9 HD8 HD7 HD6 HSIZE HRD/HRW HWR/HDS
NC = These pins MUST remain unconnected.
-46-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
OUTLINE DIMENSIONS 128-Lead Metric Thin Plastic Quad Flatpack (TQFP)
SEATING PLANE
D A D1 D3
128 1 103 102
L
TOP VIEW (PINS DOWN) E3 E1 E
D
38 39 64
65
A1 A2 e B
SYMBOL A A1 A2 D D1 D3 E E1 E3 L e B
D
MILLIMETERS MIN TYP MAX 1.60 0.05 1.30 15.75 13.90 21.75 19.90 0.45 0.42 0.17 1.40 16.00 14.00 12.50 22.00 20.00 18.50 0.60 0.50 0.22 0.15 1.50 16.25 14.10 12.58 22.25 20.10 18.58 0.75 0.58 0.27 0.10
-47-
MIN 0.002 0.051 0.620 0.547 0.856 0.783 0.018 0.017 0.007
INCHES TYP MAX 0.063 0.006 0.055 0.630 0.551 0.492 0.866 0.787 0.728 0.024 0.019 0.009 0.059 0.640 0.555 0.495 0.876 0.792 0.731 0.030 0.023 0.011 0.004
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
128-Lead PQFP Package Pinout
NC GND GND HWR/HDS HRD/HRW HSIZE HD6 HD7 HD8 HD9 HD10 V DD HD11 HD12 HD13 HD14 HD15 PWDACK BMS DMS PMS VDD GND GND WR RD NC NC NC NC NC NC 128 1 HA2/ALE HA1 HA0 HSEL HD5 HD4 HD3 HD2 HD1 HD0 V DD GND VDD A0 A1 A2 A3 A4 A5 A6 A7 XTAL CLKIN CLKOUT GND A8 A9 A10 A11 A12 A13 NC 32 33 64 97 96 D23 D22 D21 D20 D19 GND D18 D17 D16 D15 D14 D13 D12 D11 V DD GND D10 D9 D8 D7 D6 D5 D4 D3 GND D2 D1 D0 BG NC BR NC 65
128L PQFP (28MM x 28MM)
TOP VIEW (PINS DOWN)
NC = NO CONNECT
MMAP NC PWD IRQ2 NC BMODE NC NC V DD GND RESET NC HACK HMD0 HMD1 DT0 TFS0 RFS0 DR0 SCLK0 DT1/FO TFS1/IRQ1 RFS1/IRQ0 GND DR1/FI SCLK1 FL0 FL1 FL2 NC BGH NC
-48-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
PQFP Pin Configurations
PQFP Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Pin Name HA2/ALE HA1 HA0 HSEL HD5 HD4 HD3 HD2 HD1 HD0 VDD GND VDD A0 A1 A2 A3 A4 A5 A6 A7 XTAL CLKIN CLKOUT GND A8 A9 A10 A11 A12 A13 NC
PQFP Number 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
Pin Name MMAP NC PWD IRQ2 NC BMODE NC NC VDD GND RESET NC HACK HMD0 HMD1 DT0 TFS0 RFS0 DR0 SCLK0 DT1/FO TFS1/IRQ1 RFS1/IRQ0 GND DR1/F1 SCLK1 FL0 FL1 FL2 NC BGH NC
PQFP Number 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
Pin Name NC BR NC BG D0 D1 D2 GND D3 D4 D5 D6 D7 D8 D9 D10 GND VDD D11 D12 D13 D14 D15 D16 D17 D18 GND D19 D20 D21 D22 D23
PQFP Number 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128
Pin Name NC NC NC NC NC NC RD WR GND GND VDD PMS DMS BMS PWDACK HD15 HD14 HD13 HD12 HD11 VDD HD10 HD9 HD8 HD7 HD6 HSIZE HRD/HRW HWR/HDS GND GND NC
NC = These pins MUST remain unconnected.
REV. A
-49-
ADSP-2171/ADSP-2172/ADSP-2173
OUTLINE DIMENSIONS 128-Lead Metric Thin Plastic Quad Flatpack (PQFP)
SEATING PLANE
D A D1 D3
128 1 97 96
L
TOP VIEW (PINS DOWN)
E3 E1 E
D
32 33 64
65
A1 A2 e B
SYMBOL A A1 A2 D, E D 1, E1 D 3, E3 L e B
D
MILLIMETERS MIN TYP MAX 4.07 0.25 3.17 30.95 27.90 24.73 0.65 0.73 0.30 3.49 31.20 28.00 24.80 0.88 0.80 0.35 3.67 31.45 28.10 24.87 1.03 0.87 0.45 0.10
MIN 0.010 0.125 1.219 1.098 0.974 0.031 0.029 0.012
INCHES TYP MAX 0.160 0.137 1.228 1.102 0.976 0.035 0.031 0.014 0.144 1.238 1.106 0.979 0.041 0.034 0.018 0.004
-50-
REV. A
ADSP-2171/ADSP-2172/ADSP-2173
ORDERING GUIDE*
Part Number** ADSP-2171KST-133 ADSP-2171BST-133 ADSP-2171KS-133 ADSP-2171BS-133 ADSP-2171KST-104 ADSP-2171BST-104 ADSP-2171KS-104 ADSP-2171BS-104 ADSP-2173BST-80 ADSP-2173BS-80
Ambient Temperature Range 0C to +70C -40C to +85C 0C to +70C -40C to +85C 0C to +70C -40C to +85C 0C to +70C -40C to +85C -40C to +85C -40C to +85C
Instruction Rate (MHz) 33.33 33.33 33.33 33.33 26 26 26 26 20 20
Package Description 128-Lead TQFP 128-Lead TQFP 128-Lead PQFP 128-Lead PQFP 128-Lead TQFP 128-Lead TQFP 128-Lead PQFP 128-Lead PQFP 128-Lead TQFP 128 Lead PQFP
*Refer to section titled "Ordering Procedure for ADSP-2172 ROM Processors" for information about ordering ROM-coded parts. **S = Plastic Quad Flatpack, ST = Plastic Thin Quad Flatpack.
REV. A
-51-
-52-
PRINTED IN U.S.A. C1984a-6-11/95
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