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July 2006 rev 0.2 Multi-Output Custom Clock Generator
Features
* Generates seven clock outputs from an inexpensive 20MHz crystal or external reference clock. * Output Frequencies are selectable through select bits * Generates an EMI optimized clock signal at the output. * 1.5% (Typ) Clock Outputs * Operates with a 3.3V 5% Supply Voltage * Available in 28-pin TSSOP. Centre Spread for Spread Spectrum
ASM3P4200A
Product Description
The ASM3P4200A is a versatile multi output custom clock generator. The seven high frequency Clock outputs are generated using an inexpensive 20MHz Crystal or external reference clock. The accuracy of the 20MHz Input Clock should be within 50ppm. The output clocks consist of a low EMI spread spectrum clock and other non-spread clocks. Three Select bits choose the combination of Output Clock Frequency. Refer device operates from a Supply to the Output Frequency Selection Table for the values. The Voltage of 3.3V 5% with a tolerable ripple voltage of 50mV . The device is available in a 28 pin TSSOP JEDEC package.
Block Diagram
S0 S1 S2 VDD OE
CLK2 CLK3 XIN / CLK XOUT Crystal Oscillator PLL CLK4 CLK6
CLK1
CLK7 CLK8
CLK9
GND
PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 * Tel: 408-879-9077 * Fax: 408-879-9018 www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.
July 2006 rev 0.2
Pin Assignment
ASM3P4200A
XIN / CLK VCC CLK1 S1 S0 VCC CLK2 VCC CLK3 VCC GND CLK4 VCC CLK5
1 2 3 4 5 6 7 8 9 10 11 12 16pi TSSOP 13 14
28 27 26 25 24 23
XOUT GND OE S2 CLK9 VCC GND CLK8 GND CLK7 GND CLK6 VCC GND
ASM3P4200A
22 21 20 19 18 17 16 15
28 pin TSSOP
Output Frequency Selection Table Selection Bits
S2 S1 S0
CLK1 (MHz)
20 20 20 20 -
CLK2 (MHz)
36.6 36.6 36.6 36.6 -
CLK3 (MHz)
31.6 31.6 31.6 31.6 -
CLK4 (MHz)
39.5 39.5 39.5 39.5 -
CLK5 (MHz)
OFF OFF OFF OFF -
CLK6 (MHz)
84 84 36 84 -
CLK7 (MHz)
63 63 63 63 -
CLK8* (MHz)
50 60 50 75 -
CLK9* (MHz)
20 20 20 20 -
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
* CLK8 and CLK9 are Spread Spectrum Clocks
Multi-Output Custom Clock Generator
Notice: The information in this document is subject to change without notice.
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July 2006 rev 0.2
Pin Description Pin #
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
ASM3P4200A
Pin Name
XIN / CLK VCC CLK1 S1 S0 VCC CLK2 VCC CLK3 VCC GND CLK4 VCC CLK5 GND VCC CLK6 GND CLK7 GND CLK8 GND VCC CLK9 S2 OE GND XOUT
Pin Type
Input Power Output Input Input Power Output Power Output Power Power Output Power Output Power Power Output Power Output Power Output Power Power Output Input Input Power Output
Pin Description
Crystal connection or external reference frequency input. It can be connected to a 20MHz Fundamental mode crystal or to an external reference clock. Connect to +3.3V. Clock Output. Refer to the Output Frequency Selection Table for details. Select Bit for Desired Output Frequency at different output pins. Refer to the Output Frequency Selection Table for details. Has an internal pull down resistor Select Bit for Desired Output Frequency at different output pins. Refer to the Output Frequency Selection Table for details. Has an internal pull down resistor Connect to +3.3V. Clock Output. Refer to the Output Frequency Selection Table for details. Connect to +3.3V. Clock Output. Refer to the Output Frequency Selection Table for details. Connect to +3.3V. Connect to ground. Clock Output. Refer to the Output Frequency Selection Table for details. Connect to +3.3V. Clock Output. Refer to the Output Frequency Selection Table for details. Connect to ground. Connect to +3.3V. Clock Output. Refer to the Output Frequency Selection Table for details. Connect to ground. Clock Output. Refer to the Output Frequency Selection Table for details. Connect to ground. Spread Spectrum Clock Output. Refer to the Output Frequency Selection Table for details. Connect to ground. Connect to +3.3V. Spread Spectrum Clock Output. Refer to the Output Frequency Selection Table for details. Select Bit for Desired Output Frequency at different output pins. Refer to the Output Frequency Selection Table for details. Has an internal pull down resistor Output Enable bit. When this pin is made HIGH, the output clocks are enabled. Has an Internal pull-up resistor Connect to ground. Crystal connection. If an external reference clock is used, this pin must be left unconnected.
Absolute Maximum Ratings Symbol
VDD VIN TSTG TA Ts TJ TDV
Parameter
Rating
-0.5 to +4.6 -0.5 to VDD+0.3 -65 to +150 -20 to +85 260 125 2
Unit
V C C C C KV
Power Supply Voltage relative to Ground Input Voltage relative to Ground (Input Pins) Storage temperature Operating temperature Max. Soldering Temperature (10 sec) Junction Temperature Static Discharge Voltage (As per JEDEC STD22- A114-B)
Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability.
Multi-Output Custom Clock Generator
Notice: The information in this document is subject to change without notice.
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July 2006 rev 0.2
DC Electrical Characteristics
(Test condition: All parameters are measured at room temperature (+ 25C) unless otherwise stated)
ASM3P4200A
Symbol
VIL VIH IIL IIH IXOL IXOH VOL VOH IDD ICC VDD tON ZOUT Input low voltage Input high voltage Input low current Input high current
Parameter
Min
GND - 0.3 2.0 2.5 3.135 -
Typ
3 3 TBD TBD 3.3 17
Max
0.8 VDD + 0.3 -35 35 0.4 3.465 5 -
Unit
V V A A mA mA V V mA mA V mS
XOUT output low current (@0.4V, VDD=3.3V) XOUT output high current (@2.5V, VDD=3.3V) Output low voltage (VDD = 3.3 V, IOL = 12mA) Output high voltage (VDD = 3.3 V, IOH = 12mA) Static supply current* Dynamic supply current (3.3V, 20MHz and no load) Operating Voltage Power-up time (first locked cycle after power-up)** Output impedance
* XIN / CLK and OE Pins are pulled low ** VDD and XIN / CLK inputs are stable,
AC Electrical Characteristics Symbol
XIN / CLK fd tLH* tHL * tJC tp tD Input frequency Spread Percentage Output Frequency = 20MHz (Pin 24) Output Frequency = 50MHz Output Frequency = 60MHz Output Frequency = 75MHz
Parameter
Min
45
Typ
20 1.5 250 150 50
Max
1 1 55
Unit
MHz % nS nS pS pS %
Output rise time (Measured from 0.8V to 2.0V) Output fall time ( Measured from 2.0V to 0.8V) Jitter (Cycle to cycle) Jitter( Period) Output duty cycle
*tLH and tHL are measured into a capacitive load of 30pF
Multi-Output Custom Clock Generator
Notice: The information in this document is subject to change without notice.
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July 2006 rev 0.2
Package Information
ASM3P4200A
28 lead Thin Shrunk Small Outline Package (4.40-MM Body) --- JEDEC Standard
Dimensions Symbol
A A1 A2 D L E E1 R R1 b b1 c c1 L1 e
Inches Min Max
.... 0.0020 0.031 0.3779 0.020 0.169 0.004 0.004 0.007 0.007 0.004 0.004 0.043 0.0059 0.041 0.3858 0.030 0.177 .... .... 0.012 0.010 0.008 0.006
Millimeters Min Max
... 0.05 0.80 9.60 0.50 4.30 0.09 0.09 0.19 0.19 0.09 0.09 1.2 0.15 1.05 9.80 0.75 4.50 ..... ..... 0.30 0.25 0.20 0.16
0.252 BSC
6.40 BSC
0.039 REF 0.026 BSC 0 12 REF 12 REF 8 0
1.0 REF 0.65 BSC 8 12 REF 12 REF
1 2 3
Multi-Output Custom Clock Generator
Notice: The information in this document is subject to change without notice.
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July 2006 rev 0.2
ASM3P4200A
Ordering Information Part Number
ASM3P4200AG-28-TT ASM3P4200AG-28-TR
Marking
3P4200AG 3P4200AG
Package
28-Pin TSSOP, Tube, Green 28-Pin TSSOP, Tape and Reel, Green
Temperature
Commercial Commercial
Device Ordering Information
ASM3P4200AG-28-TT
OR - TSOT23 -6,T/R TT - TSSOP, TUBE TR - TSSOP, T/R VT - TVSOP, TUBE VR - TVSOP, T/R ST - SOIC, TUBE AR - SSOP, T/R AT - SSOP, TUBE PIN COUNT GREEN PACKAGE PART NUMBER X = Automotive (-40C to +125C) I = Industrial P or n/c = Commercial (-40C to +85C) (0C to +70C) 6 - power management 7 - power management 8 - power management 9 - Hi performance 0 - reserved SR QR QT BT BR UR DR DT - SOIC, T/R - QFN, T/R - QFN, TRAY - BGA, TRAY - BGA, T/R - SOT-23, T/R - QSOP, T/R - QSOP, TUBE
1 - reserved 2 - Non PLL based 3 - EMI Reduction 4 - DDR support products 5 - STD Zero Delay Buffer
PulseCore Semiconductor Mixed Signal Product
Licensed under US patent #5,488,627, #6,646,463 and #5,631,920.
Multi-Output Custom Clock Generator
Notice: The information in this document is subject to change without notice.
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July 2006 rev 0.2
ASM3P4200A
PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018 www.pulsecoresemi.com
Copyright (c) PulseCore Semiconductor All Rights Reserved Part Numbers: ASM3P4200A Document Version: 0.2
Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003
(c) Copyright 2006 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks of PulseCore Semiconductor. All other brand and product names may be the trademarks of their respective companies. PulseCore reserves the right to make changes to this document and its products at any time without notice. PulseCore assumes no responsibility for any errors that may appear in this document. The data contained herein represents PulseCore's best data and/or estimates at the time of issuance. PulseCore reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. PulseCore does not assume any responsibility or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale and/or use of PulseCore products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in PulseCore's Terms and Conditions of Sale (which are available from PulseCore). All sales of PulseCore products are made exclusively according to PulseCore's Terms and Conditions of Sale. The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of PulseCore or third parties. PulseCore does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of PulseCore products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify PulseCore against all claims arising from such use.
Multi-Output Custom Clock Generator
Notice: The information in this document is subject to change without notice.
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