82845PE Datasheet, PDF (141/176 Pages) Intel Corporation – 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH)

Functional Description
Figure 5-2. Intel^® 845GE/845PE Chipset-Based System Clocking Diagram
Processor
Low Voltage Differential Clocks
100/133 MHz
Low Voltage Differential Clocks
100/133 MHz
AGP
4X
Host
PLL
GMCH/
MCH
Core
PLL
82845GE only
DPLL
24 - 350
MHz
266/333 MHz DDR
DDR
Differential Pairs
D
D
I
I
M
M
M
M
0
1
48 MHz DOT
CK- 408
Main PLL
400 MHz
66 MHz
66 MHz
Buffer
Section
/2
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
100/
133 MHz
ITP
14 MHz 48 MHz
OSC
PLL
33 MHz
66 MHz
48 MHz USB
14 MHz
48 MHz DOT
PCI Slot 0
PCI Slot 1
PCI Slot 2
PCI Dev 1
PCI Dev 2
PCI Dev 3
PCI Dev 4
PCI Dev 5
Intel^® ICH4
Intel^® 82845GE/82845PE Datasheet
141