Datasheet

Functional Description
138 Intel
®
82845G/82845GL/82845GV GMCH Datasheet
Figure 4-2. Intel
®
845G Chipset-Based System Clocking Diagram
Processor
DPLL
24 - 350
MHz
Core
PLL
Intel
®
ICH4
/2
PCI Slot 0
PCI Dev 5
PCI Dev 4
PCI Dev 3
PCI Dev 2
PCI Dev 1
PCI Slot 2
PCI Slot 1
D
I
M
M
0
D
I
M
M
1
Host
PLL
A
G
P
4
X
CK- 408
ITP
GMCH
14 MHz
OSC
Main PLL
400 MHz
48 MHz USB
14 MHz
48 MHz DOT
Low Voltage Differential Clocks
100/133 MHz
1
0
0
/
1
3
3
M
H
z
1
0
0
/
1
3
3
M
H
z
DDR
Differential Pairs
SDR
Differential Pairs
66 MHz66 MHz
33 MHz
33 MHz
66 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
48 MHz DOT
48 MHz
PLL
100/
133 MHz
Low Voltage Differential Clocks
OR
100/133 MHz
Buffer
Section
200/266 MHz DDR
or
133 MHz SDR