Computer buses and slots connectors pinouts
PCI=Peripheral Component Interconnect. IndustrialPCI is a version of PCI adapted for industrial and/or embedded applications.

The IPCI connector has three parts:

  • Optional 60 pin PCI 64 bit extension (Top)
  • Mandatory 120 pin PCI 32 bit (Middle)
  • Optional 60 pin Custom I/O (Bottom)

System Slot (Middle)

Pin Name Description Note
A1+3,3V+3.3 VDC 
A2AD2Address 2 
A3AD6Address 6 
A4GNDGround 
A5AD10Address 10 
A6AD13Address 13 
A7GNDGround 
A8SDONESnoop Done1
A9GNDGround 
A10FRAME#Indicate Address or Data phase1
A11AD18Address 18 
A12GNDGround 
A13+5V+5 VDC 
A14AD24Address 24 
A15AD27Address 27 
A16GNDGround 
A17REQ2Request 21
A18GNDGround 
A19CLK133 or 66 MHz Clock 
A20CLK2  
A21GNDGround 
A22CLK3  
A23CLK4  
A24+3,3V+3.3 VDC 
B1REQ64#Request 64 ???1
B2AD3Address 3 
B3+5V+5 VDC 
B4AD8Address 8 
B5+3,3V+3.3 VDC 
B6AD14Address 14 
B7PARParity 
B8+3,3V+3.3 VDC 
B9STOP#Stop1
B10C/BE2#Command, Byte Enable 2 
B11V(I/O)+3.3 or +5 VDC 
B12AD21Address 21 
B13+3,3V+3.3 VDC 
B14V(I/O)+3.3 or +5 VDC 
B15AD28Address 28 
B16AD31Address 31 
B17+3,3V+3.3 VDC 
B18GNT3Grant 3 
B19RST#Reset 
B20NMI#Non Maskable Interrupt 
B21X6Reserved (6) 
B22+5V+5 VDC:
B23RSTIN# 2
B24USB+Universal Serial Bus (USB)(+) 
C1ACK64#Acknowledge 64 ???1
C2GNDGround 
C3AD7Address 7 
C4AD9Address 9 
C5AD11Address 11 
C6GNDGround 
C7SERR#System Error1
C8PERR#Parity Error1
C9DEVSEL#Device Select1
C10GNDGround 
C11AD19Address 19 
C12AD22Address 22 
C13GNDGround 
C14AD25Address 25 
C15GNDGround 
C16X1Reserved (1) 
C17GNT2Grant 2 
C18REQ4Request 41
C19SLEEP#/SDATSleep/Serial Data (I2C)3
C20X4Reserved (4) 
C21INTD#Interrupt D1
C22INTB#Interrupt B1
C23+5V+5 VDC 
C24USB-Universal Serial Bus (USB)(-) 
D1AD0Address 0 
D2AD4Address 4 
D3C/BE0#Command, Byte Enable 0 
D4+3,3V+3.3 VDC 
D5AD12Address 12 
D6AD15Address 15 
D7V(I/O)+3.3 or +5 VDC 
D8LOCK#Resource Lock1
D9TRDY#Test Logic Ready1
D10AD16Address 16 
D11AD20Address 20 
D12+5V+5 VDC 
D13+5V+5 VDC 
D14AD26Address 26 
D15AD29Address 29 
D16REQ1Request 11
D17REQ3Request 31
D18V(I/O)+3.3 or +5 VDC 
D19X2Reserved (2) 
D20X5Reserved (5) 
D21+3,3V+3.3 VDC 
D22INTA#Interrupt A1
D23ICPEN#/SCLKICPEN/Serial Clock (I2C)3
D24OSC (PWDN)  
E1AD1Address 1 
E2AD5Address 5 
E3GNDGround 
E4M66ENEnable 66Mhz PCI-bus 
E5GNDGround 
E6C/BE1#Command, Byte Enable 1 
E7SBO#Snoop Backoff1
E8+5V+5 VDC 
E9IRDY#Initiator Ready1
E10AD17Address 17 
E11GNDGround 
E12AD23Address 23 
E13C/BE3#Command, Byte Enable 3 
E14GNDGround 
E15AD30Address 30 
E16GNT1Grant 1 
E17+5V+5 VDC 
E18GNT4Grant 4 
E19X3Reserved (3) 
E20GNDGround 
E21INTC#Interrupt C1
E22-12V-12 VDC 
E23+12V+12 VDC 
E24VBATT  

1 = Pullup resistor of 2,7 kOhm on the System Slot (CPU).
2 = Pullup resistor of 330 ohm on the System Slot (CPU).
3 = Pullup resistor of 4,7 KB ohm, if not supported by the System Slot (CPU).

Module Bus Slot (Middle)

Pin Name Description Note
A1+3,3V+3.3 VDC 
A2AD2Address 2 
A3AD6Address 6 
A4GNDGround 
A5AD10Address 10 
A6AD13Address 13 
A7GNDGround 
A8SDONESnoop Done1
A9GNDGround 
A10FRAME#Indicate Address or Data phase1
A11AD18Address 18 
A12GNDGround 
A13+5V+5 VDC 
A14AD24Address 24 
A15AD27Address 27 
A16GNDGround 
A17REQ2Request 21
A18CLKM  
A19CLK133 or 66 MHz Clock 
A20CLK2  
A21GNDGround 
A22CLK3  
A23CLK4  
A24+3,3V+3.3 VDC 
B1REQ64#Request 64 ???1
B2AD3Address 3 
B3+5V+5 VDC 
B4AD8Address 8 
B5+3,3V+3.3 VDC 
B6AD14Address 14 
B7PARParity 
B8+3,3V+3.3 VDC 
B9STOP#Stop1
B10C/BE2#Command, Byte Enable 2 
B11V(I/O)+3.3 or +5 VDC 
B12AD21Address 21 
B13+3,3V+3.3 VDC 
B14V(I/O)+3.3 or +5 VDC 
B15AD28Address 28 
B16AD31Address 31 
B17+3,3V+3.3 VDC 
B18GNT3Grant 3 
B19RST#Reset 
B20NMI#Non Maskable Interrupt 
B21X6Reserved (6) 
B22+5V+5 VDC:
B23RSTIN#  
B24USB+Universal Serial Bus (USB)(+) 
C1ACK64#Acknowledge 64 ???1
C2GNDGround 
C3AD7Address 7 
C4AD9Address 9 
C5AD11Address 11 
C6GNDGround 
C7SERR#System Error1
C8PERR#Parity Error1
C9DEVSEL#Device Select1
C10GNDGround 
C11AD19Address 19 
C12AD22Address 22 
C13GNDGround 
C14AD25Address 25 
C15GNDGround 
C16X1Reserved (1) 
C17GNT2Grant 2 
C18REQ4Request 41
C19SLEEP#/SDATSleep/Serial Data (I2C) 
C20X4Reserved (4) 
C21INTD#Interrupt D1
C22INTB#Interrupt B1
C23+5V+5 VDC 
C24USB-Universal Serial Bus (USB)(-) 
D1AD0Address 0 
D2AD4Address 4 
D3C/BE0#Command, Byte Enable 0 
D4+3,3V+3.3 VDC 
D5AD12Address 12 
D6AD15Address 15 
D7V(I/O)+3.3 or +5 VDC 
D8LOCK#Resource Lock1
D9TRDY#Test Logic Ready1
D10AD16Address 16 
D11AD20Address 20 
D12+5V+5 VDC 
D13+5V+5 VDC 
D14AD26Address 26 
D15AD29Address 29 
D16REQ1Request 11
D17REQ3Request 31
D18V(I/O)+3.3 or +5 VDC 
D19X2Reserved (2) 
D20X5Reserved (5) 
D21+3,3V+3.3 VDC 
D22INTA#Interrupt A1
D23ICPEN#/SCLKICPEN/Serial Clock (I2C)3
D24OSC (PWDN)  
E1AD1Address 1 
E2AD5Address 5 
E3GNDGround 
E4M66ENEnable 66Mhz PCI-bus 
E5GNDGround 
E6C/BE1#Command, Byte Enable 1 
E7SBO#Snoop Backoff1
E8+5V+5 VDC 
E9IRDY#Initiator Ready1
E10AD17Address 17 
E11GNDGround 
E12AD23Address 23 
E13C/BE3#Command, Byte Enable 3 
E14GNDGround 
E15AD30Address 30 
E16GNT1Grant 1 
E17+5V+5 VDC 
E18GNT4Grant 4 
E19X3Reserved (3) 
E20GNDGround 
E21INTC#Interrupt C1
E22-12V-12 VDC 
E23+12V+12 VDC 
E24VBATT  

1 = Pullup resistor of 2,7 kOhm on the System Slot (CPU).

Card Slot (Middle)

Pin Name Description Note
A1+3,3V+3.3 VDC 
A2AD2Address 2 
A3AD6Address 6 
A4GNDGround 
A5AD10Address 10 
A6AD13Address 13 
A7GNDGround 
A8SDONESnoop Done1
A9GNDGround 
A10FRAME#Indicate Address or Data phase1
A11AD18Address 18 
A12GNDGround 
A13+5V+5 VDC 
A14AD24Address 24 
A15AD27Address 27 
A16GNDGround 
A17IDSEL0IDSEL01
A18GNDGround 
A19CLK133 or 66 MHz Clock 
A20GNDGround 
A21GNDGround 
A22GNDGround 
A23GNDGround 
A24+3,3V+3.3 VDC 
B1REQ64#Request 64 ???1
B2AD3Address 3 
B3+5V+5 VDC 
B4AD8Address 8 
B5+3,3V+3.3 VDC 
B6AD14Address 14 
B7PARParity 
B8+3,3V+3.3 VDC 
B9STOP#Stop1
B10C/BE2#Command, Byte Enable 2 
B11V(I/O)+3.3 or +5 VDC 
B12AD21Address 21 
B13+3,3V+3.3 VDC 
B14V(I/O)+3.3 or +5 VDC 
B15AD28Address 28 
B16AD31Address 31 
B17+3,3V+3.3 VDC 
B18GNDGround 
B19RST#Reset 
B20NMI#Non Maskable Interrupt 
B21X6Reserved (6) 
B22+5V+5 VDC:
B23RSTIN#  
B24USB+Universal Serial Bus (USB)(+) 
C1ACK64#Acknowledge 64 ???1
C2GNDGround 
C3AD7Address 7 
C4AD9Address 9 
C5AD11Address 11 
C6GNDGround 
C7SERR#System Error1
C8PERR#Parity Error1
C9DEVSEL#Device Select1
C10GNDGround 
C11AD19Address 19 
C12AD22Address 22 
C13GNDGround 
C14AD25Address 25 
C15GNDGround 
C16X1Reserved (1) 
C17IDSEL1Initialization Device Select 1 
C18GNDGround 
C19SLEEP#/SDATSleep/Serial Data (I2C) 
C20X4Reserved (4) 
C21INTD#Interrupt D1
C22INTB#Interrupt B1
C23+5V+5 VDC 
C24USB-Universal Serial Bus (USB)(-) 
D1AD0Address 0 
D2AD4Address 4 
D3C/BE0#Command, Byte Enable 0 
D4+3,3V+3.3 VDC 
D5AD12Address 12 
D6AD15Address 15 
D7V(I/O)+3.3 or +5 VDC 
D8LOCK#Resource Lock1
D9TRDY#Test Logic Ready1
D10AD16Address 16 
D11AD20Address 20 
D12+5V+5 VDC 
D13+5V+5 VDC 
D14AD26Address 26 
D15AD29Address 29 
D16REQ1Request 11
D17IDSEL2Initialization Device Select 2 
D18V(I/O)+3.3 or +5 VDC 
D19X2Reserved (2) 
D20X5Reserved (5) 
D21+3,3V+3.3 VDC 
D22INTA#Interrupt A1
D23ICPEN#/SCLKICPEN/Serial Clock (I2C)3
D24OSC (PWDN)  
E1AD1Address 1 
E2AD5Address 5 
E3GNDGround 
E4M66ENEnable 66Mhz PCI-bus 
E5GNDGround 
E6C/BE1#Command, Byte Enable 1 
E7SBO#Snoop Backoff1
E8+5V+5 VDC 
E9IRDY#Initiator Ready1
E10AD17Address 17 
E11GNDGround 
E12AD23Address 23 
E13C/BE3#Command, Byte Enable 3 
E14GNDGround 
E15AD30Address 30 
E16GNT1Grant 1 
E17+5V+5 VDC 
E18GNT4Grant 4 
E19X3Reserved (3) 
E20GNDGround 
E21INTC#Interrupt C1
E22-12V-12 VDC 
E23+12V+12 VDC 
E24VBATT  

1 = Pullup resistor of 2,7 kOhm on the System Slot (CPU).

64-bit PCI (Top)

Pin Name Description Note
A1GNDGround 
A2X10Reserved (10) 
A3AD35Address 352
A4AD38Address 382
A5AD42Address 422
A6V(I/O)+3.3 or +5 VDC 
A7V(I/O)+3.3 or +5 VDC 
A8AD52Address 522
A9AD56Address 562
A10AD60Address 602
A11AD63Address 632
A12GNDGround 
B1X7Reserved (7) 
B2GNDGround 
B3AD36Address 362
B4AD39Address 392
B5AD43Address 432
B6AD46Address 462
B7AD49Address 492
B8AD53Address 532
B9AD57Address 572
B10AD61Address 612
B11GNDGround 
B12C/BE6#Command, Byte Enable 62
C1X8Reserved (8) 
C2AD32Address 322
C3GNDGround 
C4AD40Address 402
C5AD44Address 442
C6GNDGround 
C7GNDGround 
C8AD54Address 542
C9AD58Address 582
C10GNDGround 
C11PAR64Parity 64 ???2
C12C/BE7#Command, Byte Enable 72
D1X9Reserved (9) 
D2AD33Address 332
D3AD37Address 372
D4GNDGround 
D5AD45Address 452
D6AD47Address 472
D7AD50Address 502
D8AD55Address 552
D9GNDGround 
D10AD62Address 622
D11C/BE4#Command, Byte Enable 42
D12X11Reserved (11) 
E1GNDGround 
E2AD34Address 342
E3V(I/O)+3.3 or +5 VDC 
E4AD41Address 412
E5GNDGround 
E6AD48Address 482
E7AD51Address 512
E8GNDGround 
E9AD59Address 592
E10V(I/O)+3.3 or +5 VDC 
E11C/BE5#Command, Byte Enable 52
E12X12Reserved (12) 

2 = Pullup resistor of 2,7 kOhm (5V bus system) or 8,2 kOhm (3,3V bus system) on the backplane.

ISA96/AT96 (Bottom)

Pin Name Description Note
A1RSTDRV  
A2IRQ9Interrupt 9 
A3SD11Data 11 
A4SD9Data 9 
A5IOCHRDY 1
A6IOW#I/O Write 
A7SA15Address 15 
A8CLKClock 
A9SA10Address 10 
A10SA7Address 7 
A11T/C  
A12SA2Address 2 
B1SD15Data 15 
B2SD13Data 13 
B3SD3Data 3 
B4SD1Data 1 
B5SMEMW#System Memory Write 
B6SA18Address 18 
B7SA14Address 14 
B8DACK6#DMA Acknowledge 6 
B9SA9Address 9 
B10IRQ3Interrupt 3 
B11IOCS16#I/O 16-bit chip select1
B12SA1Address 1 
C1SD7Data 7 
C2SD5Data 5 
C3SD10Data 10 
C4SD8Data 8 
C5AENAddress Enable 
C6IOR#I/O Read 
C7SA13Address 13 
C8SA11Address 11 
C9IRQ5Interrupt 5 
C10SA6Address 6 
C11SA4Address 4 
C12IRQ11Interrupt 11 
D1SD14Data 14 
D2SD12Data 12 
D3SD2Data 2 
D4SD0Data 0 
D5SMEMR#System Memory Read 
D6SA17Address 17 
D7REF#  
D8IRQ7Interrupt 7 
D9SA8Address 8 
D10MCS16# 1
D11BALE  
D12SA0Address 0 
E1SD6Data 6 
E2SD4Data 4 
E30WS 1
E4SBHE#  
E5SA19Address 19 
E6SA16Address 16 
E7SA12Address 12 
E8DRQ6DMA Request 6 
E9IRQ4Interrupt 4 
E10SA5Address 5 
E11SA3Address 3 
E12IRQ10Interrupt 10 

1 = Pullup resistor must be integrated into the System Slot (CPU).

VMEbus (Bottom)

Pin Name Description
A1D0Data 0
A2D2Data 2
A3D12Data 12
A4D7Data 7
A5DS1# 
A6BR3# 
A7AM1 
A8AM3 
A9IACKOUT# 
A10A14Address 14
A11A12Address 12
A12A10Address 10
B1BBSY# 
B2D10Data 10
B3D5Data 5
B4D15Data 15
B5SYSRES# 
B6A23Address 23
B7A21Address 21
B8A19Address 19
B9A16Address 16
B10A6Address 6
B11A4Address 4
B12A2Address 2
C1D8Data 8
C2D3Data 3
C3D13Data 13
C4SYSCLK 
C5DS0# 
C6DTACK# 
C7AS# 
C8IACK# 
C9AM4 
C10A13Address 13
C11A11Address 11
C12A9Address 9
D1D1Data 1
D2D11Data 11
D3D6Data 6
D4BG3OUT# 
D5WR#Write
D6AM0 
D7AM2 
D8A18Address 18
D9A15Address 15
D10A5Address 5
D11A3Address 3
D12A1Address 1
E1D9Data 9
E2D4Data 4
E3D14Data 14
E4BERR#Bus Error
E5AM5 
E6A22Address 22
E7A20Address 20
E8A17Address 17
E9A7Address 7
E10IRQ5#Interrupt 5
E11IRQ3#Interrupt 3
E12A8Address 8

ECB (Bottom)

Pin Name Description
A1D5Data 5
A2D2Data 2
A3A4Data 4
A4A7Address 7
A5BAI 
A62F 
A7A10Address 10
A8INT# 
A9VCMOS 
A10PWRCLR# 
A11A13Address 13
A12RESET#Reset
B1D0Data 0
B2D4Data 4
B3A1Address 1
B4WAIT# 
B5A17Address 17
B6IEO 
B7n/cNot connected
B8DMARDY 
B9RD#Read
B10IORQ# 
B11? 
B12n/cNot connected
C1D6Data 6
C2A0Address 0
C3A5Address 5
C4A16Address 16
C5A18Address 18
C6BAO 
C7M1# 
C8WR# 
C9n 
C10A12Address 12
C11A9Address 9
C12n/cNot connected
D1D7Data 7
D2A2Address 2
D3A8Address 8
D4BUSRQ# 
D5A19Address 19
D6A11Address 11
D7NMI#Non Maskable Interrupt
D8PF 
D9HALT# 
D10RFSH# 
D11MRQ# 
D12n/cNot connected
E1D3Data 3
E2A3Address 3
E3A6Address 6
E4IEI 
E5D1Data 1
E6A14Address 14
E7n/cNot connected
E8n/cNot connected
E9DESLCT# 
E10A15Address 15
E11BUSAK# 
E12n/cNot connected

SMP16 (Bottom)

Pin Name Description
A1NMI#Non Maskable Interrupt
A2IRQ0#Interrupt 0
A3D11Data 11
A4D9Data 9
A5RDYIN 
A6IOW# 
A7A15Address 15
A8CLK 
A9A10Address 10
A10A7Address 7
A11TC/EOP# 
A12A2Address 2
B1D15Data 15
B2D13Data 13
B3D3Data 3
B4D1Data 1
B5MEMW# 
B6A18Address 18
B7A14Address 14
B8DACKx# 
B9A9Address 9
B10IRQ3#Interrupt 3
B11IOCS16# 
B12A1Address 1
C1D7Data 7
C2D5Data 5
C3D10Data 10
C4D8Data 8
C5BUSEN 
C6IOR# 
C7A13Address 13
C8A11Address 11
C9IRQ1#Interrupt 1
C10A6Address 6
C11A4Address 4
C12IRQ4#Interrupt 4
D1D14Data 14
D2D12Data 12
D3D2Data 2
D4D0Data 0
D5MEMR# 
D6A17Address 17
D7INTA# 
D8INT# 
D9A8Address 8
D10MECS16# 
D11ALE 
D12A0Address 0
E1D6Data 6
E2D4Data 4
E3MMIO# 
E4BHEN 
E5A19Address 19
E6A16Address 16
E7A12Address 12
E8DRQx# 
E9IRQ2#Interrupt 2
E10A5Address 5
E11A3Address 3
E12IRQ5#Interrupt 5

Floppy/EIDE (Bottom)

Pin Name Description
A1FDSEL1Floppy Select 1
A2FDSEL0Floppy Select 0
A3FDME1Floppy ?
A4DIRFloppy Direction
A5STEPFloppy Step
A6WRDATAFloppy Write Data
A7WEFloppy Write?
A8TRK0Floppy Track 0
A9WPFloppy Write?
A10RDDATAFloppy ?
A11HDSELFloppy HD Select
A12DSKCHGFloppy DiskChange
B1DRVDEN1?
B2DRVDEN0?
B3IDECS3P#IDE ?
B4IDEA2IDE ?
B5IDEIRQSIDE ?
B6IDEPUSIDE ?
B7IDEDRQPIDE ?
B8IDED14IDE Data 14
B9IDED8IDE Data 8
B10IDED6IDE Data 6
B11IDED11IDE Data 11
B12IDED3IDE Data 3
C1FDME0Floppy Me?
C2INDXFloppy Index
C3IDECS3S#IDE ?
C4IDEA0IDE ?
C5IDEDAKS#IDE ?
C6IDEIOR#IDE ?
C7IDEDRQSIDE ?
C8IDED1IDE Data 1
C9#IDERSTIDE ?
C10IDED10IDE Data 10
C11IDED4IDE Data 4
C12IDED2IDE Data 2
D1IDELEDS#IDE LED ?
D2IDELEDP#IDE LED ?
D3IDECS1S#IDE ?
D4IDEIRQPIDE ?
D5IDEPUPIDE Pull Up ?
D6IDEIOW#IDE ?
D7IDED15IDE Data 15
D8IDED13IDE Data 13
D9IDED7IDE Data 7
D10GNDGround
D11GNDGround
D12GNDGround
E1GNDGround
E2GNDGround
E3IDECS1P#IDE ?
E4IDEA1IDE ?
E5IDEDAKP#IDE ?
E6IDEIORDYIDE ?
E7IDED0IDE Data 0
E8IDED12IDE Data 12
E9IDED9IDE Data 9
E10IDED5IDE Data 5
E11GNDGround
E12GNDGround

SCSI (Bottom)

Pin Name Description
A1TERM 
A2GNDGround
A3I/O# 
A4REQ# 
A5ATN# 
A6D8Data 8
A7D9Data 9
A8D10Data 10
A9D2Data 2
A10D4Data 4
A11DP0 
A12GNDGround
B1TERM 
B2GNDGround
B3GNDGround
B4GNDGround
B5GNDGround
B6GNDGround
B7GNDGround
B8GNDGround
B9GNDGround
B10GNDGround
B11GNDGround
B12GNDGround
C1TERM 
C2GNDGround
C3C/D# 
C4MSG# 
C5ACK# 
C6D12Data 12
C7DP1Data P1
C8D13Data 13
C9D1Data 1
C10D5Data 5
C11D7Data 7
C12GNDGround
D1TERM 
D2GNDGround
D3GNDGround
D4GNDGround
D5GNDGround
D6GNDGround
D7GNDGround
D8GNDGround
D9GNDGround
D10GNDGround
D11GNDGround
D12GNDGround
E1TERM 
E2GNDGround
E3SEL# 
E4RST# 
E5BSY# 
E6D14Data 14
E7D15Data 15
E8D11Data 11
E9D0Data 0
E10D3Data 3
E11D6Data 6
E12GNDGround

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IndustrialPCI bus visual pinout:
IndustrialPCI bus diagram
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Source(s) of this and additional information: IndustrialPCI page at Standard Industrial PC Systems"s (SIPS) homepage, from Hardware Book
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