PXI Bus P1 Connector Pinout and Signal names

The PXI connector P1 [J1] System slot & Peripheral slot pinout is provided below.
Refer to the PXI System Slot P2 or PXI Peripheral Slot P2 pinout page for P2/J2 Pin outs.
The pinout is also the same as the CompactPCI pinout.
cPCI is electrically identical to the PCI specification, it uses the same signals.
However some signals have been added in addition to the PCI specification.
The P1 connector is only used to carrier 32-bit PCI signals, no PXI specific signals have been added.
Note that both the 3U & 6U cards carry the P1 & P2 connectors, but the 6U card also has the P3, P4 and P5 connectors.
The Key rows shown in the table are a lack of pins, which force the cards to inserted in only one way.
There is no key-way on the P2 connectors.

**PXI P1 Connector Signal Assignments**
Pin #	Signal name	Signal name	Signal name	Signal name	Signal name	Signal name	Signal name
--	Row Z	Row A	Row B	Row C	Row D	Row E	Row F
25	GND	5V	REQ64#	ENUM#	3.3V	5V	GND
24		AD[1]	5V	V(I/O)	AD[0]	ACK64#
23		3.3V	AD[4]	AD[3]	5V	AD[2]
22		AD[7]	GND	3.3V	AD[6]	AD[5]
21		3.3V	AD[9]	AD[8]	M66EN	C/BE[0]#
20		AD[12]	GND	V(I/O)	AD[11]	AD[10]
19		3.3V	AD[15]	AD[14]	GND	AD[13]
18		SERR#	GND	3.3V	PAR	C/BE[1]#
17		3.3V	SDONE	SBO#	GND	PERR#
16		DEV SEL#	GND	V(I/O)	STOP#	LOCK#
15		GND	FRAME#	IRDY#	GND	TRDY#
14	KEY
13	KEY
12	KEY
11	GND	AD[18]	AD[17]	AD[16]	GND	C/BE[2]#	GND
10		AD[21]	GND	3.3V	AD[20]	AD[19]
9		C/BE[3]#	IDSEL	AD[23]	GND	AD[22]
8		AD[26]	GND	V(I/O)	AD[25]	AD[24]
7		AD[30]	AD[29]	AD[28]	GND	AD[27]
6		REQ#	GND	3.3V	CLK	AD[31]
5		BRSVP1A5	BRSVP1B5	RST#	GND	GNT#
4		BRSVP1A4	GND	V{I/O)	INTP	INTS
3		INTA#	INTB#	INTC#	5V	INTD#
2		TCK	5V	TMS	TDO	TDI
1		5V	-12V	TRST#	+12V	5V

Additional PXI notes:

PXI stands for Compact PCI for Instrumentation Bus
The number sign in the pinout table above refers to: "A # symbol at the end of a signal name indicates that the signals asserted state occurs when it is at a low voltage. The absence of a # symbol indicates that the signal is asserted at a high voltage.
The pin descriptions which indicate a Key is not a pin, but a male or female void [key].
The V(I/O) pins are un-named in this table. In a +5 volt system the V(I/O) pins are +5 volts, in a +3.3 volt system the V(I/O) pins are +3.3 volts.

PXI [and 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.

PXI [and 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 VME. FutureBus connectors, which also use 2mm style has a mating distance of 10mm, and is not compatible with cPCI connectors.

The connector types below are counting signal pins (not the ground rows), as indicated on many data sheets:

Type A connector; 110 pins, Keyed (J1/J4),([25 rows x 5 columns] - [3 rows x 5 columns of Key])
Type B connector; 110 pins (J2/J5), [22 x 5]
Type B connector; 95 pins (J3), [19 x 5]. This is also used as P0 with VME64
Type C connector; 55 pins [11 x 5]
Type AB connector; 95, 110, or 125 pins

There are other styles:
Type L connector; # contact cavities to accept power insert contacts
Type M connector; # contact cavities to accept power insert contacts/with half the connector having normal pins

Site Navigation: Engineering Home > Electrical Buses > Backplane Buses > PXI Bus > PCI P1 I/O.

The main PXI Compact PCI [cPCI] for Instrumentation Bus page, which contain a description of the bus, connector manufacturer, and IC manufacturer links.


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