Sun Microsystems Ultra 5, Service Manual

Page: 228 / 258

C-28 Sun Ultra 5 Service Manual • February 2000
IDE 1
ATI PCI based VGA 1
Total number of PCI clocks 3 7
TABLE C-10
PCI Clock Generator Frequency Select (ICW48C60-422G)
SEL0 SEL1 SEL2 R%EF1:2
CPUx
(60/66 MHz)
PCIx (30/33)
0 0 0 14.318 MHz 50 MHz 25 MHz
0 1 0 14.318 MHz 60 MHz 30 MHz
1 0 0 14.318 MHz 66 MHz 33 MHz
1 1 0 14.318 MHz 66 MHz 33 MHz
TABLE C-11
PCI Clock Generator Frequency Select (CY2254A-2)
SEL0 SEL1 OE R%EF1:2
CPUx
(60/66 MHz)
PCIx (30/33)
0 0 1 14.318 MHz 50 MHz 25 MHz
0 1 1 14.318 MHz 60 MHz 30 MHz
1 0 1 14.318 MHz 66 MHz 33 MHz
1 1 1 14.318 MHz 55 MHz 27.5 MHz
TABLE C-9
PCI Clocks (Continued)
Component 66 MHz 33 MHz