User`s manual

Functional Description 49

cPCI-3920

CompactPCI J2 Pin Assignment

The cPCI-3920 board provides Rear I/O connectivity for special

compact systems. Some standard PC interfaces are imple-

mented and assigned to the front panel and to the rear connec-

tor J2.

When the Rear I/O module is used, the signals of some of the

main board/front panel connectors are routed to the Rear I/O

module interface. Thus the Rear I/O module makes it much

easier to remove the CPU in the rack as there is practically no

cabling on the CPU board.

For the system Rear I/O feature a special backplane is neces-

sary. The cPCI-3920 with Rear I/O is compatible with all stan-

dard CompactPCI passive backplanes with Rear I/O support

on the system slot.

The cPCI-3920 Rear I/O provides the following interfaces:

X 32-bit/33 MHz CompactPCI (J1) and Rear I/O (J2)

X Two USB 2.0 ports

X Two Gigabit Ethernet ports without LED signals

X Three SATA ports

X Two COM ports

X Seven GPIOs

NOTE:

To support the Rear I/O feature a special backplane is neces-

sary. Do not plug a Rear I/O configured board in a non-system

slot Rear I/O backplane. Failure to comply with the above will

result in damage to your board.