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Block Diagram
AGP 4X/8X
AGPCLK
(66MHz)
5 PCI
PCICLK
(33MHz)
PCICLK (33MHz)
USBCLK (48MHz)
14.318 MHz
33 MHz
(
) For GA-8S648-L only
u
GA-8S648(-L) Motherboard
Pentium 4
Socket 478
CPU
SiS 648
RJ45
(u)
RTL8101L
(u)
SiS 963L
AC97 Link
AC97
CODEC
6 USB
Ports
CLK GEN
- 8 -
CPUCLK+/- (100/133 MHz)
System Bus
400/533 MHz
266/333 MHz
ZCLK (66/133MHz)
HCLK+/- (100/133MHz)
66/133 MHz
33 MHz
14.318 MHz
48 MHz
LPC BUS
IT8705
24 MHz
ATA33/66/100/133
33 MHz
IDE Channels
ZCLK (66/133MHz)
CPUCLK+/- (100/133MHz)
AGPCLK (66MHz)
HCLK+/- (100/133MHz)
DDR
BIOS
Game Port
Floppy
LPT Port
PS/2
KB/Mouse
COM
Ports
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