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Integrated Circuit Systems, Inc.
ICS950402
AMD - K8™ System Clock Chip
Recommended Application: AMD K8 System Clock with AMD or VIA Chipset
Pin Configuration
Output Features: • 2 - Differential pair push-pull CPU clocks @
3.3V
• 9 - PCICLK (Including 1 free running) @3.3V
*FS0/REF0 1 VDDREF 2 X1 3 X2 4 GND 5
48 REF1/FS1* 47 GND 46 VDDREF 45 REF2/FS2* 44 Reset#
• 4 - Selectable PCICLK/HTTCLK @3.3V • 1 - 48MHz, @3.3V fixed. • 1 - 24/48MHz @ 3.3V • 3 - REF @3.3V, 14.318MHz. Features: • Programmable output frequency.
*(PCICLK7/HTTCLK0)ModeA 6 *PCICLK8/HTTCLK1/ModeB 7
PCICLK9/HTTCLK2 8 VDDPCI 9 GND 10
PCICLK10/HTTCLK3 11 PCICLK11 12
43 VDDA 42 GND 41 CPUCLK8T0 40 CPUCLK8C0 39 GND 38 VDDCPU 37 CPUCLK8T1
ICS950402
• Programmable output divider ratios.