Description
PCI-EXPRESS GEN1 CLOCK SOURCE DATASHEET ICS557-01 .
The ICS557-01 is a clock chip designed for use in PCI-Express Cards as a clock source.
Features
* Supports PCI-ExpressTM HCSL Outputs
0.7 V current mode differential pair
* Supports LVDS Output Levels
* Packaged in 8-pin SOIC
* RoHS 5 (green) or RoHS 6 (green and lead free)
compliant packaging
* Operating voltage of 3.3 V
* Low power consumption
Applications
* see the 5V41064
* For PCIe Gen3 applications, see the 5V41234
Block Diagram
VDD
X1 25 MHz crystal /clock
X2
Clock Buffer/ Crystal Oscillator
Phase Lock Loop
Crystal Tuning Capacitors
GND
OE
CLK CLK
RR(IREF)
IDT® PCI-EXPRESS GEN1 CLOCK SOURCE
1
ICS557-01 REV P 072512
ICS557-01 PC
