Intel Xeon Computer Hardware User Manual


 
26 Intel
®
Xeon™ Processor, Intel
®
E7520 Chipset, Intel
®
6300ESB ICH Development Kit User’s Manual
System Overview
5.2 Platform Clocking
The CRB uses one CK409B Clock Synthesizer to generate the host differential pair clocks and the
100 MHz differential clock to the DB800. The DB800 then generates the 100 MHz differential pair
clock for the PCI Express* devices. Figure 6 shows the CRB clock configuration.
Figure 6. Clock Block Diagram
Intel
6300ESB
I/O
Controller
Hub
MCH
DDRA
CPU0
CPU1
ITP
DDRB
SIO
HI LAI
PXH
Video
FWH
Port 80
PCI Express Slot
PCI Express Slot
PCI 2.2
DB800
PCI-X
PCI-X
PCI-X
CK-409
SMA