# PCI

PCI=Peripheral Component Interconnect

    PCI Universal Card 32/64 bit
     ----------------------------------------------------------------
    |    PCI         Component Side (side B)                         |
    |                                                                |
    |                                                                |
    |                                                optional        |
    |    ____     mandatory 32-bit pins            64-bit pins  _____|
    |___|    |||||||--|||||||||||||||||--|||||||--||||||||||||||
             ^     ^  ^               ^  ^     ^  ^            ^
           b01   b11  b14           b49  b52 b62  b63          b94

    PCI 5V Card 32/64 bit
    |                                                optional        |
    |    ____     mandatory 32-bit pins            64-bit pins  _____|
    |___|    ||||||||||||||||||||||||||--|||||||--||||||||||||||

    PCI 3.3V Card 32/64 bit
    |                                                optional        |
    |    ____     mandatory 32-bit pins            64-bit pins  _____|
    |___|    |||||||--||||||||||||||||||||||||||--||||||||||||||

(at the computer)

98+22 PIN EDGE CONNECTOR at the computer.

Pin | +5V | +3.3V | Universal | Description
--- | --- | --- | --- | ---
A1 | TRST |  |  | Test Logic Reset
A2 | +12V |  |  | +12 VDC
A3 | TMS |  |  | Test Mde Select
A4 | TDI |  |  | Test Data Input
A5 | +5V |  |  | +5 VDC
A6 | INTA |  |  | Interrupt A
A7 | INTC |  |  | Interrupt C
A8 | +5V |  |  | +5 VDC
A9 | RESV01 |  |  | Reserved VDC
A10 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
A11 | RESV03 |  |  | Reserved VDC
A12 | GND03 | (OPEN) | (OPEN) | Ground or Open (Key)
A13 | GND05 | (OPEN) | (OPEN) | Ground or Open (Key)
A14 | RESV05 |  |  | Reserved VDC
A15 | RESET |  |  | Reset
A16 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
A17 | GNT |  |  | Grant PCI use
A18 | GND08 |  |  | Ground
A19 | RESV06 |  |  | Reserved VDC
A20 | AD30 |  |  | Address/Data 30
A21 | +3.3V01 |  |  | +3.3 VDC
A22 | AD28 |  |  | Address/Data 28
A23 | AD26 |  |  | Address/Data 26
A24 | GND10 |  |  | Ground
A25 | AD24 |  |  | Address/Data 24
A26 | IDSEL |  |  | Initialization Device Select
A27 | +3.3V03 |  |  | +3.3 VDC
A28 | AD22 |  |  | Address/Data 22
A29 | AD20 |  |  | Address/Data 20
A30 | GND12 |  |  | Ground
A31 | AD18 |  |  | Address/Data 18
A32 | AD16 |  |  | Address/Data 16
A33 | +3.3V05 |  |  | +3.3 VDC
A34 | FRAME |  |  | Address or Data phase
A35 | GND14 |  |  | Ground
A36 | TRDY |  |  | Target Ready
A37 | GND15 |  |  | Ground
A38 | STOP |  |  | Stop Transfer Cycle
A39 | +3.3V07 |  |  | +3.3 VDC
A40 | SDONE |  |  | Snoop Done
A41 | SBO |  |  | Snoop Backoff
A42 | GND17 |  |  | Ground
A43 | PAR |  |  | Parity
A44 | AD15 |  |  | Address/Data 15
A45 | +3.3V10 |  |  | +3.3 VDC
A46 | AD13 |  |  | Address/Data 13
A47 | AD11 |  |  | Address/Data 11
A48 | GND19 |  |  | Ground
A49 | AD9 |  |  | Address/Data 9
A52 | C/BE0 |  |  | Command, Byte Enable 0
A53 | +3.3V11 |  |  | +3.3 VDC
A54 | AD6 |  |  | Address/Data 6
A55 | AD4 |  |  | Address/Data 4
A56 | GND21 |  |  | Ground
A57 | AD2 |  |  | Address/Data 2
A58 | AD0 |  |  | Address/Data 0
A59 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
A60 | REQ64 |  |  | Request 64 bit ???
A61 | VCC11 |  |  | +5 VDC
A62 | VCC13 |  |  | +5 VDC
A63 | GND |  |  | Ground
A64 | C/BE[7]# |  |  | Command, Byte Enable 7
A65 | C/BE[5]# |  |  | Command, Byte Enable 5
A66 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
A67 | PAR64 |  |  | Parity 64 ???
A68 | AD62 |  |  | Address/Data 62
A69 | GND |  |  | Ground
A70 | AD60 |  |  | Address/Data 60
A71 | AD58 |  |  | Address/Data 58
A72 | GND |  |  | Ground
A73 | AD56 |  |  | Address/Data 56
A74 | AD54 |  |  | Address/Data 54
A75 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
A76 | AD52 |  |  | Address/Data 52
A77 | AD50 |  |  | Address/Data 50
A78 | GND |  |  | Ground
A79 | AD48 |  |  | Address/Data 48
A80 | AD46 |  |  | Address/Data 46
A81 | GND |  |  | Ground
A82 | AD44 |  |  | Address/Data 44
A83 | AD42 |  |  | Address/Data 42
A84 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
A85 | AD40 |  |  | Address/Data 40
A86 | AD38 |  |  | Address/Data 38
A87 | GND |  |  | Ground
A88 | AD36 |  |  | Address/Data 36
A89 | AD34 |  |  | Address/Data 34
A90 | GND |  |  | Ground
A91 | AD32 |  |  | Address/Data 32
A92 | RES |  |  | Reserved
A93 | GND |  |  | Ground
A94 | RES |  |  | Reserved
B1 | -12V |  |  | -12 VDC
B2 | TCK |  |  | Test Clock
B3 | GND |  |  | Ground
B4 | TDO |  |  | Test Data Output
B5 | +5V |  |  | +5 VDC
B6 | +5V |  |  | +5 VDC
B7 | INTB |  |  | Interrupt B
B8 | INTD |  |  | Interrupt D
B9 | PRSNT1 |  |  | Reserved
B10 | RES |  |  | +V I/O (+5 V or +3.3 V)
B11 | PRSNT2 |  |  | ??
B12 | GND | (OPEN) | (OPEN) | Ground or Open (Key)
B13 | GND | (OPEN) | (OPEN) | Ground or Open (Key)
B14 | RES |  |  | Reserved VDC
B15 | GND |  |  | Reset
B16 | CLK |  |  | Clock
B17 | GND |  |  | Ground
B18 | REQ |  |  | Request
B19 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
B20 | AD31 |  |  | Address/Data 31
B21 | AD29 |  |  | Address/Data 29
B22 | GND |  |  | Ground
B23 | AD27 |  |  | Address/Data 27
B24 | AD25 |  |  | Address/Data 25
B25 | +3.3V |  |  | +3.3VDC
B26 | C/BE3 |  |  | Command, Byte Enable 3
B27 | AD23 |  |  | Address/Data 23
B28 | GND |  |  | Ground
B29 | AD21 |  |  | Address/Data 21
B30 | AD19 |  |  | Address/Data 19
B31 | +3.3V |  |  | +3.3 VDC
B32 | AD17 |  |  | Address/Data 17
B33 | C/BE2 |  |  | Command, Byte Enable 2
B34 | GND13 |  |  | Ground
B35 | IRDY |  |  | Initiator Ready
B36 | +3.3V06 |  |  | +3.3 VDC
B37 | DEVSEL |  |  | Device Select
B38 | GND16 |  |  | Ground
B39 | LOCK |  |  | Lock bus
B40 | PERR |  |  | Parity Error
B41 | +3.3V08 |  |  | +3.3 VDC
B42 | SERR |  |  | System Error
B43 | +3.3V09 |  |  | +3.3 VDC
B44 | C/BE1 |  |  | Command, Byte Enable 1
B45 | AD14 |  |  | Address/Data 14
B46 | GND18 |  |  | Ground
B47 | AD12 |  |  | Address/Data 12
B48 | AD10 |  |  | Address/Data 10
B49 | GND20 |  |  | Ground
B50 | (OPEN) | GND | (OPEN) | Ground or Open (Key)
B51 | (OPEN) | GND | (OPEN) | Ground or Open (Key)
B52 | AD8 |  |  | Address/Data 8
B53 | AD7 |  |  | Address/Data 7
B54 | +3.3V12 |  |  | +3.3 VDC
B55 | AD5 |  |  | Address/Data 5
B56 | AD3 |  |  | Address/Data 3
B57 | GND22 |  |  | Ground
B58 | AD1 |  |  | Address/Data 1
B59 | VCC08 |  |  | +5 VDC
B60 | ACK64 |  |  | Acknowledge 64 bit ???
B61 | VCC10 |  |  | +5 VDC
B62 | VCC12 |  |  | +5 VDC
B63 | RES |  |  | Reserved
B64 | GND |  |  | Ground
B65 | C/BE[6]# |  |  | Command, Byte Enable 6
B66 | C/BE[4]# |  |  | Command, Byte Enable 4
B67 | GND |  |  | Ground
B68 | AD63 |  |  | Address/Data 63
B69 | AD61 |  |  | Address/Data 61
B70 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
B71 | AD59 |  |  | Address/Data 59
B72 | AD57 |  |  | Address/Data 57
B73 | GND |  |  | Ground
B74 | AD55 |  |  | Address/Data 55
B75 | AD53 |  |  | Address/Data 53
B76 | GND |  |  | Ground
B77 | AD51 |  |  | Address/Data 51
B78 | AD49 |  |  | Address/Data 49
B79 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
B80 | AD47 |  |  | Address/Data 47
B81 | AD45 |  |  | Address/Data 45
B82 | GND |  |  | Ground
B83 | AD43 |  |  | Address/Data 43
B84 | AD41 |  |  | Address/Data 41
B85 | GND |  |  | Ground
B86 | AD39 |  |  | Address/Data 39
B87 | AD37 |  |  | Address/Data 37
B88 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V)
B89 | AD35 |  |  | Address/Data 35
B90 | AD33 |  |  | Address/Data 33
B91 | GND |  |  | Ground
B92 | RES |  |  | Reserved
B93 | RES |  |  | Reserved
B94 | GND |  |  | Ground

Notes: Pin 63-94 exists only on 64 bit PCI implementations.

+V I/O is 3.3V on 3.3V boards, 5V on 5V boards, and define signal rails on the Universal board.

Contributor: Joakim Ögren, Phil Toms

Source:
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Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07