PXI Express Bus System Timing Slot




PXI Express Bus System Timing Slot Pin out and Signal names
The PXI Express System Timing slot pin out is provided below.
The connectors used are XP4/XJ4, XP3/XJ3, TP2/JP2, and TP1/JP1


PXIe XP4/JP4 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
1 GND GA4 GA3 GA2 GA1 GA0 GND
2 GND 5Vaux GND SYSEN# WAKE# ALERT# GND
3 GND 12V 12V GND GND GND GND
4 GND GND GND 3.3V 3.3V 3.3V GND
5 GND PXI_TRIG3 PXI_TRIG4 PXI_TRIG5 GND PXI_TRIG6 GND
6 GND PXI_TRIG2 GND ATNLED PXI_CLK10_IN PXI_CLK10 GND
7 GND PXI_TRIG1 PXI_TRIG0 ATNSW# GND PXI_TRIG7 GND
8 GND PXIe_SYNC_CTRL GND RSV PXI_LBL6 PXI_LBR6 GND




PXIe XP3/JP3 Connector Signal Assignments
Pin # Signal name Signal name Signal name Signal name Signal name Signal name Signal name Signal name Signal name
-- Row A Row B Row ab Row C Row D Row cd Row E Row F Row ef
1 GND GND GND
2 GND GND GND
3 GND GND GND
4 GND GND GND
5 GND GND GND
6 GND GND GND
7 GND GND GND
8 GND GND GND
9 GND GND GND
10 RSV RSV GND RSV RSV GND 1PERp7 1PERn7 GND




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 +5volts, 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 VMEbus. 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 stlyes:
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

Back to 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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