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W7020 bluetooth * radio module preliminary data sheet september 2000 features + complete bluetooth rf solution + compliant with bluetooth specification version 1.0 + highly integrated module including an rf transceiver ic, antenna filter, and transmit/receive baluns + 0 dbm output power at 50 w + 2.7 v operation enabling long battery life + 3.2 khz low-power idle-mode clock n digital receive signal strength indicator (rssi) n small-outline module ceramic land grid array (mclga) package ( 9.7 x 14.0 x 1. 6 mm) applications n cellular phones n pcs and peripherals n pdas n consumer appliances integer n pll lpf tank radio asic 13 mh z xtal clock generation transmitter data in unlock pll 13 mhz 1 mhz 3.2 khz 2402 mhz to 2495 mhz 0 dbm/?70 dbm antenna filter W7020 radio module receiver data out note: shaded area is external to module antenna switch lna f s 135 45 90 glpf limiter discriminator vco buffer tx amplifier rx balun tx balun figure 1 . circuit block diagram * bluetooth is a trademark of telefonaktiebolaget lm ericsson.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 2 table of contents features ................................ ................................ ................................ ................................ ............................... 1 applications ................................ ................................ ................................ ................................ ......................... 1 description ................................ ................................ ................................ ................................ ........................... 3 pin information ................................ ................................ ................................ ................................ ..................... 5 absolute maximum ratings ................................ ................................ ................................ ................................ .. 6 handling precautions ................................ ................................ ................................ ................................ ........... 6 operating range ................................ ................................ ................................ ................................ .................. 7 operating conditions ................................ ................................ ................................ ................................ ............ 7 digital inputs/outputs ................................ ................................ ................................ ................................ ........... 7 electrical characteristics ................................ ................................ ................................ ................................ ...... 8 supply currents ................................ ................................ ................................ ................................ ................ 8 power consumption ................................ ................................ ................................ ................................ .......... 8 transmit performance ................................ ................................ ................................ ................................ ...... 9 receiver performance ................................ ................................ ................................ ................................ .... 10 synthesizer performance ................................ ................................ ................................ ................................ 10 interface signal description ................................ ................................ ................................ ............................... 11 serial interface ................................ ................................ ................................ ................................ ................... 12 cap state diagram ................................ ................................ ................................ ................................ ........ 13 reserved instructions ................................ ................................ ................................ ................................ ..... 15 W7020 registers ................................ ................................ ................................ ................................ ............ 15 channel register programming example ................................ ................................ ................................ ....... 21 transmit and receiver application ................................ ................................ ................................ ..................... 22 application circuit diagram ................................ ................................ ................................ ............................ 22 timing information ................................ ................................ ................................ ................................ ......... 23 power-on reset and xo start-up ................................ ................................ ................................ .................. 24 powerup initialization ................................ ................................ ................................ ................................ .. 25 wake-up for connection ................................ ................................ ................................ ............................. 26 rssi ................................ ................................ ................................ ................................ ............................... 27 characteristic curves ................................ ................................ ................................ ................................ ......... 28 soldering profile ................................ ................................ ................................ ................................ ................ 34 outline diagram ................................ ................................ ................................ ................................ ................. 35 34-pin mclga ................................ ................................ ................................ ................................ ................ 35 manufacturing information ................................ ................................ ................................ ................................ . 36 ordering information ................................ ................................ ................................ ................................ .......... 36
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 3 description the W7020 bluetooth radio module is a short-range microwave-frequency radio transceiver for bluetooth links. it operates in the globally available 2.4 ghz to 2.5 ghz ism free band. the radio is based on a bipolar complementary metal-oxide semiconductor (bicmos) rfic. the antenna filter and the rx and tx baluns are all integrated into the radio module. as illustrated in figure 2 , the radio module requires only a baseband controller, an external antenna connected through a 50 w characteristic impedance line, and a 13 mhz crystal or reference clock signal. it is controlled by the digital baseband circuit through the serial interface bus and separate strobe signals. the tx and rx data pins also connect to the baseband with a maximum bit rate of 1 mbit/s. the power supply is partitioned into two paths, one for the vco circuit and one for all other module supply connections. each of the supplies should be externally low-frequency decoupled. fast-frequency hopping (ffh) of 1600 hops/s is used with a channel spacing of 1 mhz so that the radio link is less sensitive to signal fading due to multipath; therefore, antenna diversity is not required. the modulation is gaussian frequency shift keying (gfsk) with a bt product of 0.5. the channel bandwidth is 1 mhz and the modulation index is between 0.28 and 0.35. a binary one is indicated by a positive frequency deviation, and a binary zero is indicated by a negative frequency deviation. tx_data rx_data por (delayed reset) por_ext sys_clk_req synt_on phd_off tx_on rx_on px_on si_cms (mode select) si_cdo (data output) baseband interface sys_ clk (13 mhz) tx_ clk (1 mhz) lpo_ clk (3.2 khz) serial interface si_ clk (4 mhz) si_c di (data) strobe inputs data interface clock control outputs reset signals host controller 11 20 8 7 supply regulator power supplies v cc v cc -vco xo_p xo_n 13 mhz reference clock 17 1, 6, 10, 13, 14, 15, 16, 18, 19, 23, 28 gnd 34 2 31 25 27 26 29 33 24 21 3 5 32 22 4 antenna W7020 radio subsystem 30 9 baseband ic 100 pf figure 2 . system connections
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 4 description (continued) as shown in figure 3 , the antenna filter bandpass filters the radio signal to the antenna switch. the switch directs the signal to the rx balun or from the tx balun. the rx balun performs the transformation from unbalanced to balanced for the rx signal and connects to the low-noise amplifier (lna). the lna is followed by an image rejection mixer, so no additional image filter is needed before the mixer. the if signal out of the mixer is filtered by a bandpass filter and followed by a limiting amplifier and frequency discriminator, giving the rx data output. this discriminator output is offset-corrected. the receiver if and detection circuits are all integrated, requiring no external components. the rssi level is available digitally through the serial interface. the transmitter path utilizes direct modulation of the tx data-bit stream onto the vco. the tx data is shaped by the gaussian filter and then is applied to the vco tank. the vco is buffered internally and driven to the tx balanced output through another amplifier stage. the tx balun performs the transformation of the balanced to unbalanced signal and connects to the antenna switch. the vco frequency operating in the 2.4 ghz ism band is controlled by the phase-locked loop (pll) synthesizer through the loop filter. the reference clock oscillator is provided so that only a crystal resonator needs to be added externally to the module, or the reference clock input can be overdriven with an external signal such as from a tcxo or vcxo. the frequency accuracy requirement is 20 ppm. rx b alun 11 12 13 14 15 16 17 18 1 34 33 32 31 30 29 28 19 20 21 22 23 25 27 24 26 10 9 8 7 6 4 2 5 tx balun vco tank loop filter switch antenna filter si_cdo por lpo_clk px_on sys_clk_req sys_clk ant gnd gnd gnd gnd nc v cc gnd por_ext xo_n xo_p gnd rx_on rx_data tx_on tx_clk gnd gnd gnd v cc _vco phd_off tx_data gnd synt_on si_clk si_cms si_cdi gnd ? f lna bpf disc glpf lo pll xo 3 tx amp figure 3 . module block diagram with pinout
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 5 pin information table 1 . pin descriptions pin # symbol type* description 1 gnd ground common ground 2 tx_clk d output 1 mhz clock 3 tx_on d input transmit power on 4 rx_data d output received data input 5 rx_on d input receiver power on 6 gnd ground common ground 7 xo_p a input crystal positive input 8 xo_n a input crystal negative input or external clock input 9 por_ext d input external power-on reset 10 gnd ground common ground 11 v cc power common power supply 12 nc ? not connected 13 gnd ground common ground 14 gnd ground common ground 15 gnd ground common ground 16 gnd ground common ground 17 ant rf 50 w antenna input/output 18 gnd ground common ground 19 gnd ground common ground 20 v cc _vco power vco power supply 21 phd_off d input open pll 22 tx_data d input transmit data input 23 gnd ground common ground 24 synt_on d input synthesizer (pll) powerup 25 si_clk d input serial interface clock 26 si_cms d input serial interface mode select 27 si_cdi d input serial interface data input 28 gnd ground common ground 29 si_cdo d output serial interface data output 30 por d output power-on reset 31 lpo_clk d output 3.2 khz low-power clock 32 px_on d input packet on 33 sys_clk_req d input system clock request 34 sys_clk d output system clock *a = analog; d = digital.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 6 absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are absolute stress ratings only. functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. parameter symbol min typ max unit ambient operating temperature t a ?40 25 100 c storage temperature t stg ?65 ? 150 c lead temperature (soldering, 10 s) ? ? ? 230 c positive supply voltage v cc 0 ? 4.5 v power dissipation p d ? ? 350 m w ac peak-to-peak input voltage vp-p 0 ? v cc v digital voltages ? ?0.3 ? v cc + 0.3 v handling precautions although protection circuitry has been designed into this device, proper precautions should be taken to avoid exposure to electrostatic discharge (esd) during handling and mounting. lucent technologies microelectronics group employs a human-body model (hbm) and a charged-device model (cdm) for esd-susceptibility testing and protection design evaluation. esd voltage thresholds are dependent on the circuit parameters used to define the model. no industry-wide standard has been adopted for cdm. however, a standard hbm (resistance = 1500 w , capacitance = 100 pf) is widely used and, therefore, can be used for comparison purposes. the hbm esd threshold presented here was obtained by using these circuit parameters: parameter method rating unit esd threshold voltage hbm 2000 v esd threshold voltage (corner pins) cdm 500 v
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 7 operating range performance is not guaranteed over the full range of all conditions possible within this table. however, it lists the ranges of external conditions in which the W7020 provides general functionality, which may be useful in specific applications, without risk of permanent damage. the conditions for guaranteed performance are described in the electrical characteristics section. parameter min typ max unit operating temperature ?35 25 85 c external reference clock input level 0.4 ? 2.0 vp-p nominal operating voltage 2.7 ? 3.6 v operating conditions parameter min typ max unit frequency range 2.402 ? 2.495 ghz reference clock frequency 12.999740 13.000000 13.000260 mhz external reference clock level* 0.4 ? 1.0 vp-p supply voltage 2.7 2.8 3.0 v antenna load (vswr 2.0) 25 50 100 w operating temperature ?30 25 75 oc * optional overdrive on xo_n pin, ac-coupled. digital inputs/outputs parameter min typ max unit logical input low (0) ?0.3 0 0.2 * v cc v logical input high (1) 0.8 * v cc v cc v cc + 0.3 v input leakage current ? ? 5 a input capacitance ? ? 15 pf crystal input capacitance (xo_in) ? 2.5 ? pf rise/fall time of digital inputs ? ? 20 ns logical output low (0) ? 0 0.4 v logical output high (1) v cc ? 0.4 v cc ? v lpo clock frequency, trimmed ? ? 3.2 ? khz lpo clock frequency tolerance ? ? 250 ppm ? adjusted to 3.2 khz by the baseband circuit.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 8 electrical characteristics specifications are guaranteed for v cc = 2.8 vdc, t a = 25 c 10 c. supply currents parameter min typ max unit supply current*: standby ? 50 100 a synthesizer on ? 22 ? ma receive mode ? 40 52 ma transmit mode ? 33 44 ma *currents reflect continuous operation, not tdd mode of operation. power consumption mode tx/rx data rate (kbits/s) typ max unit tx ? 33 44 ma rx ? 40 52 ma synth on ? 22 ? ma standby ? 50 100 m a dm1 14.4/14.4 18 ? ma dm5 286.7/286.7 32 ? ma dh1 172.8/172.8 18 ? ma dh5 723.2/57.6 32 ? ma hv1 64/64 30 ? ma hv3 64/64 10 ? ma page scan ? 511 ? m a park mode (1 s interval) ? 108 ? m a
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 9 electrical characteristics (continued) specifications are guaranteed for v cc = 2.8 vdc 100 mv, t a = 25 c 10 c. transmit performance transmitter power and spectrum characteristics are measured in 100 khz rbw, unless otherwise specified. parameter min typ max unit frequency band 2402 ? 2495 mhz frequency accuracy* ? ? 75 khz frequency drift: 1-slot packet ? 5 25 khz 3- and 5-slot packets ? 15 40 khz frequency deviation: 00001111 pattern 01010101 pattern 140 115 150 ? 175 ? khz khz transmit power ?2 0 4 dbm 20 db signal bw (pn9 prbs data, in 10 khz rbw) ? ? 1 mhz gfsk modulation spectrum: >550 khz ? ?21 ?20 dbc 1.550 mhz?2.450 mhz (alternate channel) ? ?57 ?30 dbm >2.550 mhz (second alternate channel) ? ?63 ?50 dbm 13 mhz ? ?70 ?50 dbm spurious emissions: 30 mhz?1 ghz (other than ranges listed below) ? preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 10 electrical characteristics (continued) specifications are guaranteed for v cc = 2.8 vdc 100 mv, t a = 25 c 10 c. receiver performance receiver data ber 0.1%. parameter min typ max unit sensitivity (ber = 1e-3) ? ?78 ?72 dbm maximum signal sensitivity (ber = 1e-3) ?20 ?2 ? dbm spurious free input dynamic range 50 70 ? db input 1 db compression ?27 ?22 ? dbm input ip3 ? ?14 ? dbm c/i co-channel ? 8 11 db c/i, 1 mhz interference ? ?3 0 db c/i, 2 mhz interference ? ?32 ?30 db c/i, 3 3 mhz interference ? ?42 ?40 db c/i image interference (?6 mhz) ? ?17 ?9 db c/i adjacent 1 mhz to image ? ?30 ?20 db im 2 tone blocking ?39 ?34 ? dbm out-of-band blocking (cw interferer): 30 mhz?2000 mhz (other than ranges listed below) ?10 10 ? dbm 824 mhz?960 mhz 4 10 ? dbm 1710 mhz?1910 mhz 4 10 ? dbm 2000 mhz?2400 mhz ?27 ?12 ? dbm 2500 mhz?3000 mhz ?27 ?9 ? dbm 3000 mhz?12.75 ghz ?10 ?4 ? dbm conducted spurious: @100 khz rbw: 30 mhz?1 ghz (other than ranges listed below) ? preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 11 interface signal description table 2 . data interface: cmos i/o up to 1 mbit/s pin no. pin name function 4 rx_data connects to baseband and is synchronized to the sys_clk signal. 22 tx_data tx data from baseband must be synchronized with tx_clk signal. table 3 . digital control inputs: strobe signals to control various W7020 features pin no. pin name function 9 por_ext reset will occur on the positive edge of an external power-on-reset signal. 5 rx_on logic high enables receiving of rx_data; low disables rx_data. 3 tx_on logic high enables transmission of tx_data; low disables tx_data. 33 sys_clk_req logic high starts up sys_clk and tx_clk outputs (if control register bit 2 set). 32 px_on logic high during synchronization at first data packet from master. 24 synt_on logic high enables the vco/pll. 21 phd_off logic high opens the vco/pll control loop. table 4 . digital control outputs: output clocking and reset control for the baseband pin no. pin name function 2 tx_clk 1 mhz transmit clock output, available if por_ext & sys_clk_req are high. 34 sys_clk 13 mhz reference clock output, available if por_ext & sys_clk_req are high. 31 lpo_clk 3.2 khz adjustable low-power oscillator clock, available after v cc applied. 30 por delayed reset signal (<30 ms) (refer to power-on reset and xo start-up section). table 5 . analog inputs: connect xtal off-module or external oscillator signal (0.4 vp-p to 1.0 vp-p) pin no. pin name function 7 xo_p connect xtal. leave unconnected when using external clock. 8 xo_n connect xtal or external signal, ac-coupled. table 6 . serial interface: based on the boundary-scan architecture, iee e * 1149.1 pin no. pin name function 27 si_cdi control data input; transports serial data to the W7020. 26 si_cms control mode select; determine transitions from one state to another with the clk positive edge. 25 si_clk control clock; control timing of the serial interface. 29 si_cdo control data out; transports serial data from the W7020 to baseband. * ieee is a registered trademark of the institute of electrical and electronic engineers, inc.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 12 serial interface the serial interface implementation is based on the boundary-scan architecture, ieee std. 1149.1. figure 4 shows a block diagram of the serial interface. it is identical to the boundary-scan architecture if the extra control signals from the controller access port (cap) block are removed. the interconnection between the serial interface and the external controller (baseband chip) consists of four 1-bit signals: control data input (cdi), control mode select (cms), control clock (clk), and control data output (cdo). the cdi signal transports serial data to the W7020, while the cdo signal transports serial data out of the W7020. data register bypass register decode instruction register data bus (d[7:0]) control address bus enable status select enable clock_dr cdo clk cms cdi shift_ir clock_ir control update_dr shift_dr update_ir cap figure 4 . slave serial interface ( ieee std. 1149.1) the cap is a controller-state machine and is controlled by the clk and cms signals. the cap, which consists of 16 states, determines whether an instruction register scan or a data register scan will be performed. in these two register scan cycles, data are exchanged between the interconnected units. the interface architecture contains three types of registers: instruction register (ir), bypass register (byp), and data register (dr). the structure of the instruction register is shown in figure 5 . the register has a serial data input (cdi) and serial data output (cdo), as well as parallel status inputs and outputs. during a scan period, serial data are shifted through the register. shadow latches are needed to hold the parallel output at a steady value when shifting occurs. the width of the instruction register is 6 bits.
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 13 serial interface (continued) shadow latches instruction shift register status cdo instruction register output cdi clockir shiftir updateir figure 5 . instruction register the data register has a structure similar to the ir. the data width is 8 bits. the bypass register consists of a single register bit and forms a scan path between cdi and cdo. cap state diagram the cap state diagram is shown in figure 6 . transitions from one state to another depend on the cms input and occur at the rising edge of the clk. the cms and cdi inputs should change value on the falling edge of clk. the cdo output changes on the negative edge of clk. an instruction register scan (ir-scan) period starts with a status information download (capture-ir). the status inputs to the instruction register are user-defined observability inputs. however, the two least significant status information bits are fixed to 01 during the capture-ir according to the standard. afterward, the data can be shifted out (shift-ir) at the same time serial data is shifted in, or directly updated to the parallel output (exit1-ir, update-ir). it also is possible for the ir-scan period to be paused (pause-ir) before a new data shift. a data register scan period is identical, but there are no restrictions on the data during capture-dr. the control-logic-reset state can always be reached from any other state by allowing the cms input to be high for five clock cycles.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 14 serial interface (continued) cap state diagram (continued) update_dr update_ir exit2_dr exit2_ir pause_dr pause_ir exit1_dr exit1_ir shift_dr shift_ir capture_dr capture_ir select_dr scan select_ir scan controller_logic reset run_test/idle 0 1 1 1 1 1 0 0 0 1 0 0 1 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 1 1 figure 6 . cap state diagram
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 15 serial interface (continued) reserved instructions two reserved instructions are implemented. the first is the bypass instruction. its bit code is defined to be all ones. this instruction allows serial data to be transferred through the circuit from cdi to cdo with the bypass register connected between, one clock signal delayed. the second is the normal read/write instruction. this instruction selects a specific register to write to or read from. the bit code of this instruction is defined to be 01xxxx, where xxxx is the register address (see table 7 ). W7020 registers W7020 registers are accessed by the instruction register output. every register has a unique address. table 7 lists the various registers, their read or write status, and their addresses. table 7 . W7020 registers register name # of bits r/w address vco/dafc control 8 w 010001 = 17 channel rssi 8 5 w r 010010 = 18 xo-trim id 6 8 w r 010011 = 19 lpo-hi 1 w 010100 = 20 lpo-lo 8 w 010101 = 21 control 7 w 010110 = 22 chp and tx control 8 w 010111 = 23 current control 3 w 011000 = 24 enable 8 w 011001 = 25 the W7020 registers are explained in table 8 through table 18 .
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 16 serial interface (continued) W7020 registers (continued) table 8 . vco/dafc/delay control (address = 17)* bit no. bit name reset value baseband standard setting function 7 delp 0 1 delays phd_off negative edge by 6 s?7 s if delp = 1. 6 dels 0 1 delays synt_on negative edge by 6 s?7 s if dels = 1. 5 dtrim 0 1 enables dafc diode voltage trim: 1 = enable. 0 = default diode voltage. 4 dafc1 0 1 sets the diode voltage in 50 mv steps if dtrim = 1. 3 dafc0 0 1 2 ? ? 0 ? 1 vco1 0 1 sets the vco core current. 0 vco0 0 1 * ? = not applicable. table 9 . channel register (address = 18) bit no. bit name reset value function 7 rx/tx 0 receive or transmit channel: 1 = rx; 0 = tx. 6 c6 0 channel value (0 dec?127 dec). 5 c5 0 4 c4 0 3 c3 0 2 c2 0 1 c1 1 0 c0 0
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 17 serial interface (continued) W7020 registers (continued) table 10 . rssi register (address = 18)* bit no. bit name reset value function 7 ? ? ? 6 ? ? ? 5 ? ? ? 4 rs4 u received signal strength indicator. lower input power gives lower rssi value. 3 rs3 u 2 rs2 u 1 rs1 u 0 rs0 u * ? = not applicable; u = undefined. table 11 . xo-trim register (address = 19)* bit no. bit name reset value function 7 ? ? ? 6 ? ? ? 5 xo5 0 4 xo4 0 trim value for the internal capacitor load of the crystal (0 ?> max f xo ; 63 ?> min f xo ). 3 xo3 0 2 xo2 0 1 xo1 0 0 xo0 0 * ? = not applicable.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 18 serial interface (continued) W7020 registers (continued) table 12 . id register (address = 19)* bit no. bit name reset value function 7 c13 0 6 c12 0 5 c11 0 4 c10 1 ? 3 v13 u 2 v12 u 1 v11 u 0 v10 u version number (p4b = 0111, p5b = 1000). * u = undefined. table 13 . lpo-hi register (address = 20)* bit no. bit name reset value function 7 ? ? ? 6 ? ? ? 5 ? ? ? 4 ? ? ? 3 ? ? ? 2 ? ? ? 1 ? ? ? 0 l8 0 most significant bit of the lpo adjust value: l8?l0 = 00 . . . 0 gives max f lpo . l8?l0 = 11 . . . 1 ?> min f lpo . * ? = not applicable. table 14 . lpo-lo register (address = 21) bit no. bit name reset value function 7 l7 0 6 l6 0 5 l5 0 eight least-significant bits of the lpo adjust value: l8?l0 = 000 . . . 0 gives maximum f lpo . l8?l0 = 111 . . . 1 gives minimum f lpo . 4 l4 0 3 l3 0 2 l2 0 1 l1 0 0 l0 0
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 19 serial interface (continued) W7020 registers (continued) table 15 . control register (address = 22)* bit no. bit name reset value function 7 ? ? ? 6 ltr3 1 lpo course trimming. lower value gives higher f lpo. 5 ltr2 0 4 ltr1 0 3 ltr0 0 2 xoctr 0 xoctr crystal oscillator start-up control. after power-on reset, a 0 to 1 transition enables the xo to be controlled by sys_clk_req. 1 ? ? ? 0 ? ? ? * ? = not applicable. table 16 . chp and tx control register (address = 23) bit no. bit name reset value baseband standard setting function 7 chptst 0 0 must be programmed to 0. 6 tx2 0 1 5 tx1 0 0 4 tx0 0 0 sets the frequency deviation amplitude 000 ?> maximum deviation. 111 ?> minimum deviation. 3 enlo1 0 0 must be programmed to 0. 2 chp2 0 0 1 chp1 0 0 0 chp0 0 0 must be programmed to 0.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 20 serial interface (continued) W7020 registers (continued) table 17 . current control register (address = 24)* bit no. bit name reset value function 7 rint2 0 6 rint1 0 5 rint0 0 default reset value is used for normal operation. does not require programming by baseband. 4 ? ? ? 3 ? ? ? 2 ? ? ? 1 ? ? ? 0 ? ? ? * ? = not applicable. table 18 . enable register (address = 25)* bit no. bit name reset value baseband standard setting function 7 pxen 0 1 must be programmed to 1. 6 ? 0 0 must be programmed to 0. 5 ? 0 1 must be programmed to 1. 4 ? 0 1 must be programmed to 1. 3 ? 0 1 must be programmed to 1. 2 ? 0 1 must be programmed to 1. 1 den 0 1 must be programmed to 1. 0 txinv 0 1 must be programmed to 1. *? = not applicable.
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 21 serial interface (continued) channel register programming example the following example demonstrates how to program the W7020 for transmit channel 50. the first step is to point to the channel register by doing an ir-scan. the cms signal is used to put the cap (see figure 7 ) in the shift_ir state. after the cap is in the shift_ir state, the channel address value 010010 (18) should be shifted into the cdi input (lsb first). when the cap returns to the run_test/idle state, the instruction register is updated. the new channel value is entered by performing a dr-scan. the cms signal is used to put the cap in the shift_dr state. the channel value of 50 is shifted in the cdi = 00110010 (50 decimal) lsb first. when the cap is returned to run_test/idle, the channel register is updated. if no other W7020 register has been addressed when a new channel value is required, only a new dr-scan needs to be done, because the ir already points to the channel register. when data is shifted in, previous data contained in the selected register will simultaneously be shifted out on the cdo. in the case of the channel register, the value of the rssi will be shifted out on the cdo. an example of programming the channel register is shown below. all input signals (cdi, cms) to the serial interface should change on the negative edge of the serial interface clock (clk) to eliminate setup and hold violations. the serial interface samples the cdi and cms signals on the positive edge of cck. the output signal (cdo) changes on the negative edge. in the final application, cdo is sampled on the positive clk edge. cms 1 1 1 1 1 0 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 cap state shift_ir shift_ir and exit update ir, select _dr shift_dr and exit run_test idle cdi x x x x x x x x x x 0 1 0 0 1 0 x x x x 0 1 0 0 1 1 0 0 x x x don?t care channel register 18 channel value 50 cdo ? ? ? ? ? ? ? ? ? ? 1 0 0 1 1 0 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? high impedance rssi value figure 7 . serial interface channel register programming example timing information
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 22 transmit and receiver application application circuit diagram tx_clk (1 mh z ) rx b alun 11 12 13 14 15 16 17 18 1 34 33 32 31 30 29 28 19 20 21 22 23 25 27 24 26 10 9 8 7 6 4 2 5 tx balun vco tank loop filter switch antenna filter nc f tx amp lna bpf disc lpf lo pll xo ? gnd gnd gnd gnd 4.7 pf 2.8 v rx_data por_ext rx_on 3 sys_clk sys_clk_req px_on sys_clk_req px_on sys_clk (13 mhz ) por (reset output) si_cdo lpo_clk lpo_clk (3.2 k h z ) tx_on 2.8 v ant si_cdo si_cdi si_cms si_clk synt_on phd_off tx_data v cc gnd xo_n xo_p gnd gnd por_ext rx_data rx_on tx_on phd_off gnd gnd gnd gnd si_cdi si_cms si_clk synt_on tx_data data interface digital control inputs digital control outputs serial interface digital control inputs data interface baseband interface lines por 4.7 pf 6.8 m f 6.8 m f tx_clk v cc _vco figure 8 . application circuit diagram
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 23 transmit and receiver application (continued) timing information figure 9 shows the test conditions required to produce a transmit and receive slot with the W7020. (in addition, pins por_ext and sys_clk_req must be held high.) the transmit slot begins with taking synt_on high. this turns on the synthesizer and voltage-controlled oscillator (vco). the synthesizer is programmed to the appropriate channel (see the channel register programming example section). a delay (t to ) is required for the phase-lock loop (pll) to settle before tx_on is pulled high. modulation is achieved by first opening the pll by taking phd_off high. the transmit data from the baseband device is input into the W7020 tx_data pin. the W7020 gaussian filter shapes the data, and then directly modulates the vco. after the transmit slot is completed, the tx_on, phd_off, and synt_on inputs are returned to a low for minimum current consumption. t phd tx_data rx_data phd_off tx_on rx_on tx slot rx slot t td t rd px_on synt_on si_cdi t to t s t ro channel number channel number t tx t s t rx figure 9 . timing diagram
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 24 transmit and receiver information (continued) timing information (continued) table 19 . timing table symbol parameter min typ max unit t tx data sending period, 1-slot packet ? ? 366 s t tx data sending period, 3-slot packet ? ? 1622 s t tx data sending period, 5-slot packet ? ? 2870 s t rx data receiving period, 1-slot packet ? ? 366 s t rx data receiving period, 3-slot packet ? ? 1622 s t rx data receiving period, 5-slot packet ? ? 2870 s t phd phase detector off delay after t to ? 104 ? s t rd delay before receiving data ? 213 ? s t ro receiver on delay ? 208 ? s t s slot time, 1-slot packet ? 625 ? s t s slot time, 3-slot packet ? 1875 ? s t s slot time, 5-slot packet ? 3125 ? s t td delay before transmitting data ? 214 ? s t to transmitter on delay ? 110 ? s power-on reset and xo start-up the power-on reset is a block that creates a reset signal to the digital circuitry. the transition from low to high on the por signal occurs when the lpo and the crystal oscillator, xo, are running and the por_ext signal is high. (see table 20 .) both por_ext and por are active-low signals. table 20 . reset truth table por_ext (pin 9) xo lpo por (pin 30) 0 x x 0 1 x no osc. 0 1 no osc. osc. 0 1 osc. osc. 1 a power supply drop below a certain voltage level that is caused by, for example, a glitch, will automatically cause a reset. a 13 mhz crystal should be connected to the xo_n and xo_p pins, as shown in figure 3 . an internal (0 pf?8 pf) capacitive load of the crystal can be adjusted with the xo-trim register so that the crystal runs at 13 mhz within 20 ppm. alternatively, an external 13 mhz sinus signal (200 mv?500 mv peak) can be used instead of the external crystal. the clock should be ac-coupled into the xo_n pin. figure 10 and figure 11 show typical powerup initialization and wake-up sequences.
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 25 transmit and receiver application (continued) timing information (continued) powerup initialization 3.5 ms 2 ms 350 ns 20 s to 200 s v cc por_ext in por out p p sys_clk_req in (low) sys_clk_req in (high) lpo out (3.2 k hz ) sys_clk out (13 mhz ) tx_clk out (1 mhz) si_cdi (as required) si_cms (as required) si_clk (as required) serial bus initialization (xo-trim register; control register:xoctr bit=1 and lpo coarse trim bits as req?d; chp control register=8(dec); enable register=191(dec) sys_clk and tx_clk outputs remain active if sys_clk_req is high here, after control:xoctr bit=1 tx_on in (low) synt_on in (low) xo_n in (low) phd_off in (low) rx_on in (low) figure 10 . powerup initialization sequence
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 26 transmit and receiver application (continued) timing information (continued) wake-up for connection 18 s 130 s 80 s v cc (>2.7 v dc ) por_ext in (high) por out (high) sys_clk_req in sys_clk out (13 mhz ) tx_clk out (1 mhz ) synt_on in tx_on in r x_on in lpo out (3.2 khz ) phd_off in tx data px_on in rx data 45 s?345 s (packet-dependent) 68 s?2870 s 68 s ?2870 s (packet-dependent) 200 s serial bus initialization (channel register) si_cdi (as required) si_cms (as required) si_clk (as required) figure 11 . typical wake-up-for-connection sequence
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 27 transmit and receiver information (continued) rssi the rssi value is a measure of the rf input power that is sampled on the low-high transition of the px_on signal. the rssi value is sent out on the si-cdo line when the channel register is accessed (same address). select, for example, receive channel 50 (channel register = 10110010) and input a gfsk modulated carrier (?60 dbm). toggle px_on low-high-low and read out the rssi value by accessing the channel register once again. the rssi value will be in the 6 to 14 range. input a higher power (?40 dbm). toggle px_on and read out the rssi value again. the rssi value will be in the 20 to 28 range.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 28 characteristic curves figure 12 . vco settling time and transmit slot (16 alternating 1s and 0s)
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 29 characteristic curves (continued) ref lvl 0 dbm 0 ?10 ?20 ?30 ?40 ?50 ?70 ?80 ?100 ?90 ?60 span 10 mhz 1 mhz/ center 2.441 ghz rf att unit 10 db dbm 100 khz 300 khz 10 ms rbw vbw swt marker 1 (t1) ?0.38 dbm 2.44101002 ghz 1 1 btmodmask 1 [t1] ?0.38 dbm 2.44101002 ghz ch pwr acp up acp low alt1 up alt1 low alt2 up alt2 low 5.86 dbm ?19.97 dbm ?19.81 dbm ?49.92 dbm ?48.13 dbm ?55.66 dbm ?54.00 dbm [t1] ?21.47 db 550.00000000 khz 1 figure 13 . gfsk transmit modulation mask
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 30 characteristic curves (continued) 1 1 2 ref lvl 0 dbm rf att unit 10 db dbm 10 khz 30 khz 1 s rbw vbw swt marker 1 (t1) ?1.81 dbm 2.44100501 ghz ?100 ?10 ?20 ?30 ?40 ?50 ?70 ?80 ?90 ?60 0 span 5 mhz 500 khz/ center 2.441 ghz 1 [t1] ?1.81 dbm 2.44100501 ghz ?20.75 db ?340.68136273 khz ?20.72 db 380.60120241 khz 1 [t1] 2 [t1] figure 14 . transmit modulation spectrum (?20 db bandwidth) note : the displayed 20 db bandwidth = 721 khz.
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 31 characteristic curves (continued) ?30 ?25 ?20 ?15 ?10 ?5 0 5 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 blocker frequency (ghz) blocker level (dbm) 0 0.05 0.1 0.15 0.2 0.25 0.3 ber (%) blocker power (dbm) ber figure 15 . receiver out-of-band blocking note: bit error rate (ber) less than 0.1% indicates limitations of blocker-signal power level.
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 32 characteristic curves (continued) figure 16 . vco/pll synthesizer
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 33 characteristic curves (continued) figure 17 . vco/pll synthesizer ssb phase noise
preliminary data sheet W7020 bluetooth radio module september 2000 lucent technologies inc. 34 soldering profile to prevent damage to the components from crack, etc., the following soldering steps should be followed: 1. carefully perform preheating so that the temperature difference d t between the solder and the component surface is in the range shown in figure 18 . 2. when the components are immersed in solvent after mounting, maintain the temperature difference within 100 o c. 3. use rosin type flux or weakly active flux with chlorine content of 0.2% weight or less. 4. use eutectic crystal solder. soldering method temperature reflow d t 130 oc preheating 60 s min. within 120 s within 20 s temperature (c) 220 c ~ 230 c within 10 s d t 200 c 220 c ~230 c figure 18 . solder timing diagram
preliminary data sheet september 2000 W7020 bluetooth radio module lucent technologies inc. 35 outline diagram 34-pin mclga dimensions are in millimeters. 0794 note: positions and dimensions of holes in the shield may vary.
preliminary data sheet W7020 bluetooth radio module september 2000 for additional information, contact your microelectronics group account manager or the following: internet: http://www.lucent.com/micro e-mail: docmaster@micro.lucent.com n.america: microelectronics group, lucent technologies inc., 555 union boulevard, room 30l-15p-ba, allen town, pa 18109-3286 1-800-372-2447 , fax 610-712-4106 (in canada: 1-800-553-2448 , fax 610-712-4106) asia pacific: microelectronics group, lucent technologies singapore pte. ltd., 77 science park drive, #03-18 cintech iii, singapore 118256 tel. (65) 778 8833 , fax (65) 777 7495 china microelectronics group, lucent technologies (china) co., ltd., a-f2, 23/f zao fong universe building, 1800 zhong shan xi road, shanghai 200233 p.r. china tel. (86) 21 6440 0468, ext. 325, fax (81) 21 6440 0652 japan: microel ectronics group, lucent technologies japan ltd., 7-18, higashi-gotanda 2-chome, shinagawa-ku, tokyo 141, japan tel. (81) 3 5421 1600 , fax (81) 3 5421 1700 europe: data requests: microelectronics group dataline: tel. (44) 7000 582 368 , fax (44) 1189 328 148 technical inquiries: germany : (49) 89 95086 0 (munich), united kingdom : (44) 1344 865 900 (ascot), france: (33) 1 40 83 68 00 (paris), sweden: (46) 8 594 607 00 (stockholm), finland : (358) 9 3507670 (helsinki), italy: (39) 02 6608131 (milan), spain: (34) 1 807 1441 (madrid) lucent technologies inc. reserves the right to make changes to the product(s) or information contained herein without notice. no liability is assumed as a result of their use or application. no rights under any patent accompany the sale of any such product(s) or information. copyright ? 2000 lucent technologies inc. all rights reserved printed in u.s.a. september 2000 ds00-208wblu (replaces ds99-254wblu) printed on recycled paper manufacturing information this device may be assembled in any of the following locations: j, s, and tw. ordering information the following devices are available: + bluetooth radio module + bluetooth radio module, tape and reel + bluetooth radio module, bakeable tray + bluetooth radio module, dry pack tape and reel + W7020 evaluation board, including solder-attached W7020 bluetooth radio module (lucW7020) + W7020 bluetooth radio module evaluation kit, including evb7020, usb transceiver interface board, and pc control software contact your lucent technologies microelectronics group account manager for comcode information and minimum order requirements.

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