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ICS650-01

Part Number	ICS650-01
Manufacturer	Renesas
Description	SYSTEM PERIPHERAL CLOCK SOURCE
Published	Jun 4, 2020
Detailed Description	SYSTEM PERIPHERAL CLOCK SOURCE DATASHEET ICS650-01 Description The ICS650-01 is a low-cost, low-jitter, high-performan...
Datasheet	ICS650-01 PDF File

Overview

SYSTEM PERIPHERAL CLOCK SOURCE DATASHEET ICS650-01 Description The ICS650-01 is a low-cost, low-jitter, high-performance clock synthesizer for system peripheral applications.
Using analog/digital Phase-Locked Loop (PLL) techniques, the device accepts a parallel resonant 14.
31818 MHz crystal input to produce up to eight output clocks.
The device provides clocks for PCI, SCSI, Fast Ethernet, Ethernet, USB, and AC97.
The user can select one of three USB frequencies and also one of two AC97 audio frequencies.
The OE pin puts all outputs into a high impedance state for board level testing.
All frequencies are generated with less than one ppm error, meeting the demands of SCSI and Ethernet clocking.
Block Diagram Features • Packaged in 20-pin SSOP (QSOP) • Pb (lead) free package • Operating voltage of 3.
3 V or 5 V • Less than one ppm synthesis error in all clocks • Inexpensive 14.
31818 MHz crystal or clock input • Provides Ethernet and Fast Ethernet clocks • Provides SCSI clocks • Provides PCI clocks • Selectable AC97 audio clock • Selectable USB clock • OE pin tri-states the outputs for testing • Selectable frequencies on three clocks • Duty cycle of 40/60 • Advanced, low-power CMOS process • Industrial temperature range available VDD 3 PSEL1:0 ASEL USEL 2 14.
31818 MHz Crystal or Clock X1/ICLK X2 Crystal Oscillator Clock Synthesis Circuitry 4 Processor Clocks Audio Clock USB Clock 20 MHz 14.
31818 MHz 2 GND OE (all outputs) IDT™ / ICS™ SYSTEM PERIPHERAL CLOCK SOURCE 1 ICS650-01 REV H 051310 ICS650-01 SYSTEM PERIPHERAL CLOCK SOURCE CLOCK SYNTHESIZER Pin Assignment Processor Clock (MHz) USEL X2 X1/ICLK VDD VDD GND UCLK 20M ACLK PCLK4 1 2 3 4 5 6 7 8 9 10 20 PSEL1 19 PSEL0 18 PCLK2 17 PCLK3 16 VDD 15 ASEL 14 GND 13 14.
318M 12 PCLK1 11 OE 20 pin (150 mil) SSOP USB Clock (MHz) USEL 0 M 1 UCLK 12 24 48 Pin Descriptions PSEL1 0 0 0 M M M 1 1 1 PSEL0 0 M 1 0 M 1 0 M 1 PCLK1 PCLK2, 3 PCLK4 25 50 18.
75 TEST TEST TEST TEST TEST TEST 40 80 20 3...

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