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Chapter 4 Technical Reference
Revision History
Block Diagram
AGP 1X/2X/4X
AGPCLK
(66MHz)
5 PCI
AC97 Link
AC97
PCICLK
CODEC
(33MHz)
PCICLK (33MHz)
USBCLK (48MHz)
14.318 MHz
33 MHz
Pentium 4
CPUCLK+/- (100/133MHz)
Socket 478
CPU
System Bus
400MHz
100/133/166MHz
SiS 645
ZCLK (66MHz)
HCLK+/- (100/133MHz)
66 MHz
33 MHz
14.318 MHz
48 MHz
SiS 961B
LPC BUS
IT8705
33 MHz
6 USB
ATA33/66/100/133
Ports
IDE Channels
ZCLK (66MHz)
CPUCLK+/- (100/133MHz)
CLOCK GEN
AGPCLK (66MHz)
ICS 952004
HCLK+/- (100/133MHz)
- 47 -
SDRAM
BIOS
Game Port
Floppy
LPT Port
PS/2
KB/M ouse
24 MHz
2 COM Ports
Technical Reference
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