CompactPCI Express [cPCIe] Board Dimensions
Nothing about the size of the board changes between cPCI and cPCIe.
The only real change is the electrical interface, changing from PCI to PCIe.
So the board dimensions shown below for CompactPCI Express match those used by CompactPCI.
However the style and number of I/O connectors used for I/O does change.
For example 5 connectors are used on a 6u cPCI board, while 7 connectors are used on a cPCIe board.
cPCI Express [6U] uses 2mm 'Hard Metric'; IEC 1076-4-101, a number of different pin
arrangements. Normally the outside Ground rows (which are compression
pins) 'Z' and 'F' are not counted as pins. OEM pin numbering may be by
cPCI or in accordance with IEC 61076-4-101 (which is reversed). The term
"Hard Metric" only means that metric dimensions are preferred ~ with-out
regard to inches. Connector manufacturers [vendors] are listed on the
main CompactPCI Express [cPCIe] page.
The types below are counting signal pins (not the ground rows), as
indicated on many data sheets:
Type A; 110 pins, Keyed (J1/J4),([25 rows x 5 columns] - [3
rows x 5 columns of Key])
Type B; 110 pins (J2/J5), [22 x 5]
Type B; 95 pins (J3), [19 x 5]. This is also used as P0
with VME64
Type C; 55 pins [11 x 5]
Type AB; 95, 110, or 125 pins
There are other connector types:
Type L; # contact cavities to accept power insert contacts
Type M; # contact cavities to accept power insert contacts/with
half the connector having normal pins
cPCI and PXI use the same form factor [card size]. cPCI and PXI use the
electrical bus standard of PCI [with a few changes].
The cPCIe board standard uses the PCI express interface standard.
Back to the main CompactPCI Express [cPCIe],
CompactPCI [cPCI], PXI, or PCI Bus page.
Navigation: Engineering Home > Interface Buses > Backplane Interface Standards > CompactPCIe Interface Standard > CompactPCIe Board Size
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