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CPCI Backplane PD02: CP3-BP4-M

4.2 P1 Connector Coding for V(I/O)

The CompactPCI Specification foresees coding of the P1 connector to correspond to the sig-

nalling environment of the PCI bus. For this reason, only boards with universal or the corre-

sponding coding can be physically inserted into the backplane. PEP’s factory default setting

for V(I/O) is +5V and male, 1567 code, brilliant blue coding keys are used.

5. Interfaces

5.1 Line Connector

Instead of a 3-pole Mate-N-Lok connector the power supply to the backplane is connected by

means of 3 separate pins on the reverse side of the backplane, to which power supply cables

should be soldered.

Figure 2: Orientation and Pinouts of CP3-BP4-M Power Supply Connector Pins

Warning!

Using boards with an inadequate signalling voltage may result in dam-

age to your equipment. Therefore, when changing the signalling envi-

ronment from 5V to 3.3V or vice versa, it is mandatory that proper

coding keys are used (refer to chapter 3 of the CPCI Backplane Man-

ual, ID 24229, for details).

B11

Table 2: Pinouts of CP3-BP4-M

Power Supply Connector

Pin Function

B2 L or +DC

B5 N or -DC

B11 PE

1 2 3 4 5 6 7 8

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