Hardware Configuration
ROBO-8911VG2A User’s Manual
2-3
JP2D: DDR2 memory frequency selection
JP2D
Function
9-10 open
11-12 open
Reserved
9-10 open
11-12 short
The memory module is DDR2 400
Ì
9-10 short
11-12 open
The memory module is DDR2 533
9-10 short
11-12 short
Reserved
JP3 : VIO Voltage selection
JP3
Function
1-2 short
Without Backplane
2-3 short
Have Backplane
Ì
JP4 : CPU FSB frequency selection
JP4
Function
1-2 short
CPU FSB frequency=400MHz
Ì
2-3 short
CPU FSB frequency=533MHz
Note:
The DDR2 frequency is followed the CPU FSB frequency. For example, the DDR2
module populated is DDR2 533, the CPU must be 533MHz FSB. Please use same
frequency of memory module and CPU. Neither CPU/DDR=533/400 nor 400/533
are allowed. This is the limitation of 915GM chipset.
JP5 : COM2 Communication Protocol selection
JP5
Function
5-6,9-11,10-12,15-17,16-18 short
RS-232
Ì
3-4,7-9,8-10,13-15,14-16,21-22 short
RS -422
1-2,7-9,8-10,19-20 RS-485
JP6 : CMOS RAM charge/discharge setup
JP6
Function
1-2 short
Clear CMOS
2-3 short
Charge
Ì
