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ADVANCE INFORMATION
CRYSTAL-TO-MLVDS PCI EXPRESS™ CLOCK SYNTHESIZER W/SPREAD SPECTRUM
ICS845204
General Description
The ICS845204 is a 4 output PCI Express clock ICS synthesizer optimized to generate low jitter PCI HiPerClockS™ Express™ reference clocks with or without spread
spectrum modulation and is a member of the HiPerClockS™ family of high performance clock solutions from IDT. Spread type and amount can be configured via the SSC control pins. Using a 25MHz, 18pF parallel resonant crystal, the device will generate M-LVDS clocks at either 25MHz, 100MHz, 125MHz or 250MHz. The ICS845204 uses a low jitter VCO that easily meets PCI Express jitter requirements and is packaged in a 32-pin VFQFN package.