System Clock Distribution; Table 4-13. Clock Generation And Table 4-14. Configurationm - HP Deskpro EX Technical Reference Manual

Chapter 4 System Support
4.5

SYSTEM CLOCK DISTRIBUTION

These systems use an Intel CK-type clock generator and crystal for generating the clock signals
required by the system board components. Table 4-13 lists the system board clock signals and how
they are distributed.
Table 4-13. Clock Generation and Distribution
Clock Generation and Distribution
Frequency
66, 100, or 133 MHz
100 or 133 MHz
66 MHz
48 MHz
33 MHz
14.31818 MHz
Certain clock outputs are turned off during reduced power modes to conserve energy. Clock output
control is handled through the SMBus interface by BIOS.
4-22 Compaq Deskpro EX Series of Personal Computers
Table 4-13.
Source Destination
CK Processor, GMCH
CK DIMM sockets
CK ICH, AGP Graphics Cntlr.
CK ICH, I/O Cntlr.
CK Processor, ICH, PCI Slots
Crystal CK
First Edition - August 2000