Compact Peripheral Component Interface
cPCI Bus
[cPCI Description] [cPCI Interface ICs]
[cPCI Connectors] [cPCI
PinOut] [OnLine Standards]
[cPCI COTS Cards] [cPCI
Chassis] [cPCI Backplanes]
[PCI page]
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A board format specification that defines both the mechanical and electrical characteristics.
cPCI [Compact Peripheral Component Interface] is electrically identical
to the PCI specification, except it uses the
Euro (VME) card 3U/6U format with 2mm
connectors. The cPCI bus uses 8, 16, 32, or 64 bit transfers at up to
264MBps. 64 bit PCI transfers may be used in either 3U or 6U size cards.
6U boards contain additional pins for user defined I/O. |
PXI defines cPCI for Instrumentation adding
additional enhancements, with the same form factor as cPCI. PXI adds
additional signals and chassis requirements just like VXI adds to VME. Unlike VXI, PXI does not
require that the card be enclosed in a metal shield.
The newest version in the cPCI form factor is called cPCIe and trades in the PCI bus for the PCIe bus.
PICMG 2.0 Rev 3.0 CompactPCI Core Specification; See also the
PCI Page
PICMG 2.1 Rev2.0 CompactPCI Hot Swap
PICMG 2.2 Rev1.0 VME64x on CompactPCI [VME64x bus on the P4/P5 connectors]
PICMG 2.3 Rev1.0 PMC on CompactPCI
PICMG 2.4 Rev1.0 IP on CompactPCI
PICMG 2.5 Rev1.0 CompactPCI Computer Telephony
PICMG 2.7 Rev1.0 6U CompactPCI Dual System Slot Specification
PICMG 2.9 Rev1.0 CompactPCI System Management
PICMG 2.10 Rev1.0 Keying of CompactPCI Boards and Backplanes
PICMG 2.11 Rev1.0 CompactPCI Power Interface
PICMG 2.12 Rev2.0 Hot Swap Infrastructure Interface
PICMG 2.14 Rev1.0 CompactPCI Multicomputing Specification
PICMG 2.15 Rev1.0 PCI Telecom Mezzanine/Carrier Card [H.110 [TDM
bus] Computer Telephony]
PICMG 2.16 Rev1.0 CompactPCI Packet Switching Backplane
Specification [cPSB] (GigaBridge, Ethernet)
PICMG 2.17 Rev1.0 CompactPCI StarFabric Specification
PICMG 2.20 Rev1.0 CompactPCI Serial Mesh Backplane
Specification
PXI Rev 1.0 PXI; PCI eXtensions for Instrumentation
Compact PCI Industrial Computer Manufacturers Group {PICMG} .. IEEE {Institute of Electrical and Electronic Engineers, www.ieee.org}
Card dimensions [size] / Form Factor
cPCI P1/J1 Pinout {2mm style}
cPCI P2/J2 Pinout {2mm style}
Pinouts for the other connectors found on a 6U card are user defined.
While the pinout for a 3U card is fully defined by the links above. The 3U size card only uses the P1/P2 connectors.
Using the same specification as PCI, cPCI may use the same IC's as the
PCI bus specification.
The PCI bus doesn't use Glue logic, being developed as
a single chip interface bus. So signal chip solutions or ASIC parts are the only PCI chips
listed below.
The +5 volt interface uses standard TTL switching levels VIH =
2v, VOH = 2.4v.
The +3.3 volt Low Voltage interface uses VIH
= 1.65v, VOH = 2.97v
PCI is a CMOS bus, with no current flowing in the static state.
.............. |
Altera {PCI Cores} Analog Devices {Dual PCI Hot-Plug Controller IC} Cirrus Logic {PCI-Disk Controller ICs} IDT {PCI-SCI Bridge Chips} Infineon Technologies {PC Chips-DRAM Controllers} Intel {ISA to PC/PCI to PC/PCI to CardBus Controllers} Marvell {PCI chip sets} PLX Technology Inc. {PCI-to-PCI Bridge IC, PCI I/O Accelerator ICs} QLogic {PCI-SBus devices} QuickLogic {PCI System/Bus Master, PCI Bus Target, PCI-to-PCI Bridge ICs} Texas Instruments 'TI' {Bridge ICs-Controllers} Tundra Semiconductor Corp. {PCI bridges} Xilinx {FPGA Core} All other types IC Manufacturers |
cPCI 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.
cPCI 2mm connectors mating distances [12.50mm] matches the 96 pin DIN
41612 connectors used with other EuroCard packaging [IEC 273 or IEEE
1101, 1101.10], like VMEbus. FutureBus connectors, which also use 2mm
style has a mating distance of 10mm, and is not compatible with cPCI
connectors.
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 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
The card side connector is Male (Right-Angle), the back plane side is Female (Straight).
A new cPCI connector with better shielding is called Ultra Hard Metric [UHM]
DINTEK {Hard Metric Male/Female. Press Fit. A number of Tail Lengths}
ecs {2mm Hard Metric connectors}
Meritec {2mm cPCI backplane cable assemblies, off the shelf product and customizable products.}
Positronic Industries {Power Module Connectors}
CompactPCI [cPCI] Chassis will be between 1 and 8 slots (the maximum).
Printed Wiring Boards [PWB] are spaced on 0.8 inch centers.
The chassis may accept 3U cards, or 3U and 6U cards. The chassis may have
a separate card cage to handle the 3U cards.
The chassis shall provide a +5volt, +/- 12volt and a 3.3volt supply @
maximum ripple 50mV. I believe the Telcom version provides 48 volts as
the system power.
The backplane is passive. The bus requires one card acting as the systems
controller residing at either end of the back-plane (chassis), termed the
System Slot. The remaining cards (slots) are termed the Peripheral Slots.
PXI, cPCI for Instrumentation uses the same chassis. cPCI and PXI Chassis manufacturers
In cPCI, the system slot may reside in any slot of the back plane with the other 7 slots as peripheral cards. In PXI, the left most slot is the system slot followed on the right by 7 peripheral slots. In addition, 3 other slots, with do not contain back plane connectors may reside to the left of the system slot. These additional 3 slots provide expansion (wider card) for the system card.
How to spec out an equipment chassis; Chassis Design Considerations.
CompactPCI [cPCI] uses the Euro Format [dimensions], see figure above.
IEEE 1101.1 Base Document for Mechanics
IEEE 1101.10 Mechanics for VME Boards and Subracks
IEEE 1101.11 Mechanics for Rear Transition Modules
CompactPCI [cPCI] cards may be either 3U {100mm x 160mm} or 6U {233 x 160mm).
The boards should be keyed to indicate either 5V or 3.3v operation.
3U card will use J1 and may use J2, 6U cards shall use J1 and may use J2 to J5.
J1 is used for 32 bit PCI, J2 is used for 64 bit PCI, J3 to J5 are used for user definable signals.
cPCI Card manufacturers and vendors, or cPCI Backplanes manufacturers
Navigation: Engineering Home > Interface Buses > Backplane Interface Standards > cPCI Board Standard.
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