Connectors and Jumpers
1230B0026301
3-21
3.18.2 CPU FSB Clock Jumper (J12)
The motherboard supports a 3x3pin CPU FSB Clock Jumper during prototype stage to set the processor
speed. If installed, the jumper can override any FSB speed settings.
The 3x3pin CPU FSB clock jumper is shown below:
Figure 3-21 CPU FSB Clock Jumper
The settings and frequencies are shown as the table below:
Table 3-18 CPU FSB Clock Frequencies and Setting
CPU FSB Clock Frequencies
Short Pins for Frequencies Setting
266MHz (DEMPSEY)
A2-A3
B2-B3
C2-C3
133MHz A1-A2
B2-B3
C2-C3
200MHz A2-A3
B1-B2
C2-C3
166MHz A1-A2
B1-B2
C2-C3
333MHz (WOODCREST)
A2-A3 B2-B3 C1-C2
100MHz A1-A2
B2-B3
C1-C2
400MHz A2-A3
B1-B2
C1-C2
