System Clock Distribution - Compaq Deskpro EP 6233 Technical Reference Manual

Chapter 4 System Support
4.5

SYSTEM CLOCK DISTRIBUTION

Table 4-17 lists the system board clock signals and how they are distributed.
Table 4–17. Clock Generation and Distribution
Clock Generation and Distribution
Frequncy/Signal
66, 100 MHz
(CPUCLK) [1]
66 MHz
48 MHz
33 MHz (PCICLK)
14.31818 MHz
14.31818 MHz
8.33 MHz (BCLK)
32.77 KHz
NOTES:
[1] 66-MHz slot 1 system board; 66 MHz only.
100-MHz slot 1 system board; 66 or 100 MHz (refer to
Chapter 3, "Processor/Memory Subsystem")
[2] 66-MHz slot 1 system board uses W48C67-07 clock generator.
100-MHz slot 1system board uses CK100 clock generator.
4-28 Compaq Deskpro EP Series of Personal Computers
Table 4-17.
Source Destination
[2] Processor, 82443 N. Bridge
North Bridge AGP Slot
" 82371 S. Bridge, 87309 I/O Cntlr.
" PCI Slots, 82371 S. Bridge
Crystal [2]
[2] South Bridge, ISA slots
South Bridge ISA slots
Crystal South Bridge
First Edition - April 1998