B598
10
JCLK – Bus frequency selection
Shorted
Function
Remark
1-3, 2-4
Reserved
1-3, 4-6
Reserved
2-4
33MHz
4-6
30MHz
3-5, 2-4
Reserved
3-5, 4-6
Tristate all clocks
JP1 – Gxm CPU V-core voltage selection
Shorted
Function
Remark
None
Shutdown
1-2
2.1 V
3-4
2.3 V
1-2, 3-4
2.3 V
5-6
2.4 V
1-2, 5-6
2.5 V
3-4, 5-6
2.6 V
1-2, 3-4, 5-6
2.7 V
7-8
2.8 V
1-2, 7-8
2.9 V
Default setting
3-4, 7-8
3.0 V
1-2, 3-4, 7-8
3.1 V
5-6, 7-8
3.2 V
1-2, 5-6, 7-8
3.3 V
3-4, 5-6, 7-8
3.4 V
1-2, 3-4, 5-6, 7-8
3.5 V
FAN CONNECTOR
JCFAN1,JCFAN2 – CPU fan connector
JCFAN1:
Pin
Function
Remark
2
Fan positive
No key protection
1,3
Fan negative