Intel SERVER BOARD SDS2 - Manual (Page 85)

Intel® Server Board SDS2 Clock/Voltage Generation and Distribution
Revision 1.2
Order Number: A85874-002
71
HOST CLK
APIC CLK
48 MHz 14 MHz
PCI 33MHz CLK PCI 66MHz CLK
CPU 1
CPU 2
HE-SL
CSB5
PCI 33MHz
CLK
BUFFER
SDRAM CLK PLL
VGA
SDRAM 1 SDRAM 2 SDRAM 3 SDRAM 4 SDRAM 5 SDRAM 6
SDRAM
REGISTER 1
CIOB
PCI
66MHz CLK
BUFFER
PCI SLOT 2 PCI SLOT 1 PCI SLOT 6 PCI SLOT 5
NIC 1
NIC 2
SIO BMC
U160 SCSI
PCI SLOT 3 PCI SLOT 4
IRQ 0
IRQ 1
cPLD
SDRAM
REGISTER 2
133 MHz 133 MHz
133 MHz
PCI
66MHz CLK
BUFFER
16 MHz 16 MHz 16 MHz 48 MHz 48 MHz 14 MHz 14 MHz 33 MHz 33 MHz 33 MHz 66 MHz
66 MHz
66 MHz
66 MHz
66 MHz 66 MHz
66 MHz 66 MHz 66 MHz 66 MHz
25 MHz
AGPFBCLK
CNBDCLKIN
PLLCLKFB0 CNBDCLKFB CNBRDCLK
133 MHz 133 MHz 133 MHz 133 MHz 133 MHz 133 MHz 133 MHz 133 MHz 133 MHz 133 MHz 133 MHz
40 MHz 32 KHz
40 MHz
25 MHz
14.318 MHz
33 MHz 33 MHz 33 MHz 33 MHz 33 MHz 33 MHz 33 MHz
Figure 8. SDS2 Server Board Clock Generation/Distribution Diagram