MK1493-01 - Integrated Circuit Systems

MK1493-01 PCI Clock Generator

The MK1493-01 is a general purpose clock generator part that provides an integrated clocking solution for PCI /networking applications. It provides 8 individually programmable PCI clocks, 2 CPU clocks, additional fixed PCI clocks and a 25 MHz reference clock for LAN support. This part incorporates ICS’s newest clock technology, offering more robust features .

Features

and functionality. Using a serially programmable SMBus interface, the MK1493-01 can select the output clock frequency, and enabling/disabling each individual output clock. Features
• 8 PCI clocks at 25, 33, 50, 66.66 MHz individually pin selectableand serioal port slectable
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• 2 CPU clocks at 100 MHz 2 PCI clocks at 66.66 MHz 1 PCI clock @ 50 MHz 25 MHz reference clock SMBus Programming Power-up default frequency can be selected through FS inputs 25 MHz crystal or clock input required PCICLK cycle to cycle jitter <250ps CPUCLK cycle to cycle jitter <100ps Packaged in 48-p.