Pentium/SDRAM Clock Generator with Integrated Buffers
n Generates all clock frequencies for Pentium (II), AMD
and Cyrix system requiring multiple CPU clocks.
n Supports up to16 Synchronous CPU clocks (4 CPU and
12 SDRAM) and 7 Synchronous PCI BUS clocks.
n Two 14.318Mhz reference clocks and one 2.5V IOAPIC
n One 24Mhz floppy clock and one 48Mhz USB clock.
n Power management control pins to stop CPU, SDRAM
or PCI BUS clocks.
n Supports 2-wire I2C serial bus interface.
n 50% duty cycle with low jitter
n Mixed voltage support from 3.0 to 5V or (VDDq2=2.5V)
n Available in 300mil 48 pin SSOP.
FREQUENCY SELECTION (MHz)
F2 F1 F0 PCLK/SDRAM
Note: F2,F1,F0 and MODE are selectable only during power-on. They are
HIGH by default and LOW when 10K Ω Pull down is attached.
I/O MODE CONFIGURATION
45437 Warm Springs Blvd., Fremont, California 94539, TEL 510-492-0990 FAX 510-492-0991
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