CompactPCI
CompactPCI is a 1997 Called into life standard of the PICMG for high-end systems in 19-inch technology with passive backplane for high standards of performance, robustness and reliability . CompactPCI can be set up flexibly as a multi-computer system and is based on the euro card format . In 1998 the standard was further developed and optimized for measurement technology. The resulting PXI standard is largely compatible with the CompactPCI standard.
The connection to the backplane is made via five-row gas-tight and shielded plugs. In addition to the PCI bus signals (110 pins on connector J1) are on the connector J2 110 pins for 64-bit PCI expansion and reserved system control signals or user I / O and double Europa card (6 U) on the connectors J3, J4 and J5 315 pins intended for user I / O. In CompactPCI is provided that cards can be replaced during operation ( hot swapping ). This requires both mechanical (different pin lengths), electrical (no interference from the backplane) and also technical measures for the controlled activation and deactivation of drivers .
CompactPCI backplanes can contain up to eight slots, of which the so-called system slot is intended for the host CPU card with the bus arbiter. The number of cards can be further increased with a PCI-to-PCI bridge.
The electrical specifications are based on the PCI standard (Peripheral Component Interconnect), but are partially restricted by e.g. B. all PCI signals may only be loaded with one load unit (except for the system slot). The supply voltage is 5 V, 3.3 V, +12 V and −12 V. A locking mechanism prevents cards with 3.3 V technology from being inserted into 5 V slots or vice versa.
CompactPCI is colloquially abbreviated as “cPCI” or “CPCI”. The PICMG has distanced itself from these designations. They are officially no longer used.
Web links
- CompactPCI Overview. PCI Industrial Computer Manufacturers Group (PICMG), accessed August 14, 2015 .