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Revision History
Chapter 4
Block Diagram
AGP 4X
AGPCLK
(66MHz)
5 PCI
PCICLK
AC97
(33MHz)
CODEC
PCICLK (33MHz)
USBCLK (48MHz)
14.318 MHz
33 MHz
"*" Auto detect and optimized setting for Pentium
Technical Reference
Pentium 4
Socket 478
CPU
400/533 MHz
Intel
82845
Intel
ICH 2
AC97 Link
4 USB
Ports
CLK GEN
- 55 -
CPUCLK+/- (100/133* M Hz)
System Bus
100/133MHz
MCH66 (66MHz)
MCHCLK+/- (100/133* MHz)
66 MHz
33 MHz
14.318 MHz
48 MHz
BIOS
LPC BUS
ITE
8712
48 MHz
ATA33/66/100
IDE Channels
MCH66 (66MHz)
CPUCLK+/- (100/133* M Hz)
AGPCLK (66MHz)
MCHCLK+/- (100/133* MHz)
ICH3V66 (66MHz)
4 processor.
®
SDRAM
Game Port
Floppy
LPT Port
PS/2
KB/Mouse
COM
Ports
Technical Reference
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