CP302
Functional Description and Configuration
ID 21112, Rev. 05
Page 2 - 31
®
PEP Modular Computers GmbH
2.7.4
Fan Power Supply Selection
The voltage for the CPU cooling fan can be configured using jumpers J8 and J9
The default setting is indicated by italics
2.7.5
PCI VI/O setting
The CP302 provides for either a 5V or 3.3V PCI signaling environment.
The BVI/O power jumpers on the board are used to power the buffers on the peripheral
boards and the PMC interface. The BVI/O does not provide power to the CompactPCI
interface. The CompactPCI VI/O must be configured via the backplane.
2.7.6
Shorting Chassis GND (Shield) to Logic GND
The front panel including the front panel connectors are isolated to the logic ground.
This zero Ohm resistor enables connection between the chassis GND and logic GND.
The default setting is indicated by italics.
Table 2-17: Fan Power Supply Selection
J9
J8
Function
Closed
Open
+5V
Open
Closed
+12V
Table 2-18: PCI VI/O setting
Board VI/O setting
R158
R159
5V default
Open
Closed
3.3V
Closed
Open
Table 2-19: Shorting Chassis GND (Shield) to Logic GND
R314
Function
Open
Connectors are isolated to logic GND
Short
Connectors are connected to logic GND and chassis GND
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