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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