CompactPCI Bus
cPCI —or CompactPCI— refers to a mechanical standard designed for industrial computers in harsh environment.
CompactPCI Bus Compatibility
Euresys cPCI boards are designed to be inserted in a 6U high CompactPCI slot inside an industrial computer. They are compliant with the PCI Local Bus Specification, revision 2.2 and expose one of the following PCI busses:
- 32-bit, 33 MHz, 3 V and 5 V signaling
- The CompactPCI connector is 32-bit wide. It operates at 33 MHz maximum and accepts any signaling system, either 3 V or 5 V.
- These boards can be used in a 32-bit or 64-bit CompactPCI slot with any signaling. The board can be installed in a 64-bit slot, but will not take advantage of the larger available bandwidth.
- These boards can be used in a 33 MHz or 66 MHz CompactPCI slot. Installing the board on a 66 MHz bus will restrict the bus to 33 MHz for all agents installed on this bus.
- 64-bit, 66 MHz, 3 V and 5 V signaling
- The CompactPCI connector is 64-bit wide. It operates at 66 MHz maximum and accepts any signaling system, either 3 V or 5 V.
- These boards can be used in a 32-bit or 64-bit CompactPCI slot with any signaling. If the board is installed in a 32-bit slot, the available bandwidth for transfer will be reduced by half.
- These boards can be used in a 33 MHz or 66 MHz CompactPCI slot.
Conventional PCI Bus Power Supplies
As per the PICMG 2.0 R3.0 CompactPCI Specification, the following power supplies are mandatory on the backplane CompactPCI connectors.
- +3.3 V
- +5 V
- +12 V
- -12 V
According to the board specification, only some of these power supplies are required for the board and/or the system and cameras powering.
Additional Information
For more information about PCI busses, their performance and their usage, refer to the PCI Bus Variation technology note.