4A www.
DataSheet4U.
com CY2254A Pentium® Processor Compatible Clock Synthesizer/Driver Features • Multiple clock outputs to meet requirements of most Pentium® motherboards — Four pin-selectable CPU clocks @ 66.
66 MHz, 60.
0 MHz, and 50.
0 MHz for support of Intel Triton™ PCIset based PC — 55.
0 MHz pin-selectable CPU clock also available (−2 option only) — Six PCI clocks at 1/2 CPU Clock frequency — One I/O clock @ 24 MHz — One Keyboard Controller clock @ 12 MHz (−1 option) or one Universal Serial Bus clock @ 48 MHz (−2 option) — Two Ref.
clocks @ 14.
318 MHz — Ref.
14.
318 MHz Xtal oscillator input • CPU clock jitter 200 ps cycle-to-cycle • Low skew outputs — 250 ps between CPU clocks — ...

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