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ICS557GI-03LF

Part Number	ICS557GI-03LF
Manufacturer	Renesas
Description	2 OUTPUT PCI-EXPRESS GEN1 CLOCK SOURCE
Published	Jul 9, 2021
Detailed Description	2 OUTPUT PCI-EXPRESS GEN1 CLOCK SOURCE DATASHEET ICS557-03 Description The ICS557-03 is a spread spectrum clock genera...
Datasheet	ICS557GI-03LF PDF File

Overview

2 OUTPUT PCI-EXPRESS GEN1 CLOCK SOURCE DATASHEET ICS557-03 Description The ICS557-03 is a spread spectrum clock generator that supports PCI-Express Gen 1 and Ethernet requirements.
The device is used for PC or embedded systems to substantially reduce electromagnetic interference (EMI).
The device provides two differential (HCSL) spread spectrum outputs.
The spread type and amount are configured via select pin.
Using IDT’s patented Phase-Locked Loop (PLL) techniques, the device takes a 25 MHz crystal input and produces two pairs of differential outputs at 25 MHz, 100 MHz, 125 MHz or 200 MHz clock frequencies for HCSL, and 25 MHz or 100 MHz for LVDS.
Features • Packaged in 16-pin TSSOP • RoHS 5 (green) or RoHS 6 (green and lead free) compliant packaging • Supports HCSL or LVDS output levels • Operating voltage of 3.
3 V • Input frequency of 25 MHz • Jitter 60 ps (cycle-to-cycle) • Spread Spectrum capability • Industrial and commercial temperature ranges • For PCIe Gen2 applications, see the 5V41065 • For PCIe Gen3 applications, see the 5V41235 Block Diagram VDD 2 SS1:SS0 2 S1:S0 2 Control Logic Phase Lock Loop X1/ICLK 25 MHz crystal or clock X2 Clock Buffer/ Crystal Oscillator Optional tuning crystal capacitors 2 GND OE CLK0 CLK0 CLK1 CLK1 Rr(IREF) IDT® 2 OUTPUT PCI-EXPRESS GEN1 CLOCK SOURCE 1 ICS557-03 REV U 112111 ICS557-03 2 OUTPUT PCI-EXPRESS GEN1 CLOCK SOURCE PCIE SSCG Pin Assignment S0 1 S1 2 SS0 3 X1/ICLK 4 X2 5 OE 6 GNDXD 7 SS1 8 16 VDDXD 15 CLK0 14 CLK0 13 GNDODA 12 VDDODA 11 CLK1 10 CLK1 9 IREF 16-pin (173 mil) TSSOP Pin Descriptions Output Select Table 1 (MHz) S1 S0 CLK(1:0), CLK(1:0) 0 0 25M 0 1 100M 1 0 125M 1 1 200M Spread Selection Table 2 SS1 SS0 Spread% 0 0 No Spread 0 1 Down -0.
5 1 0 Down -0.
75 1 1 No Spread Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name S0 S1 SS0 X1/ICLK X2 OE GNDXD SS1 IREF CLK1 CLK1 VDDODA GNDODA CLK0 CLK0 VDDXD Pin Type Pin Description Input Select pin 0.
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