PCI (Peripheral Component Inconnect — соединение внешних компонентов). Этот интерфейс поддерживает тактовую частоту до 33МГц (вариант PCI 2.1 — до 66 МГц), имеет пиковую пропускную способность до 132 Мбайт/с (264 Мбайт/с для 32 разрядных и 528 Мбайт/с для 64-разрядных данных на частоте 66 МГц).
Конструктивно разъем состоит из двух следующих подряд секций по 64 контакта. Внутри второй секции имеется пластмассовая поперечная перегородка (ключ) для предотвращения неправильной установки карт. Разъемы и карты к ним поддерживают уровни сигналов либо 5В, либо 3,3В, либо оба уровня (универсальные).
Интерфейс обеспечивает поддержку Bus Mastering и систему автоматической конфигурации компонентов при установке (Plug-and-Play).
PCI — является сейчас самым распространенным и универсальным интерфейсом, но начиная с середины 2004 года он начнет уступать место более скоростной PCI Express.
| Pin | +5V | +3.3V | Universal | Description | | Pin | +5V | +3.3V | Universal | Description |
|---|
| B1 | -12V | | | -12 VDC | | A1 | TRST | | | Test Logic Reset |
| B2 | TCK | | | Test Clock | | A2 | +12V | | | +12 VDC |
| B3 | GND | | | Ground | | A3 | TMS | | | Test Mde Select |
| B4 | TDO | | | Test Data Output | | A4 | TDI | | | Test Data Input |
| B5 | +5V | | | +5 VDC | | A5 | +5V | | | +5 VDC |
| B6 | +5V | | | +5 VDC | | A6 | INTA | | | Interrupt A |
| B7 | INTB | | | Interrupt B | | A7 | INTC | | | Interrupt C |
| B8 | INTD | | | Interrupt D | | A8 | +5V | | | +5 VDC |
| B9 | PRSNT1 | | | Reserved | | A9 | RESV01 | | | Reserved VDC |
| B10 | RES | | | +V I/O (+5 V or +3.3 V) | | A10 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) |
| B11 | PRSNT2 | | | ?? | | A11 | RESV03 | | | Reserved VDC |
| B12 | GND | (OPEN) | (OPEN) | Ground or Open (Key) | | A12 | GND03 | (OPEN) | (OPEN) | Ground or Open (Key) |
| B13 | GND | (OPEN) | (OPEN) | Ground or Open (Key) | | A13 | GND05 | (OPEN) | (OPEN) | Ground or Open (Key) |
| B14 | RES | | | Reserved VDC | | A14 | RESV05 | | | Reserved VDC |
| B15 | GND | | | Reset | | A15 | RESET | | | Reset |
| B16 | CLK | | | Clock | | A16 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) |
| B17 | GND | | | Ground | | A17 | GNT | | | Grant PCI use |
| B18 | REQ | | | Request | | A18 | GND08 | | | Ground |
| B19 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) | | A19 | RESV06 | | | Reserved VDC |
| B20 | AD31 | | | Address/Data 31 | | A20 | AD30 | | | Address/Data 30 |
| B21 | AD29 | | | Address/Data 29 | | A21 | +3.3V01 | | | +3.3 VDC |
| B22 | GND | | | Ground | | A22 | AD28 | | | Address/Data 28 |
| B23 | AD27 | | | Address/Data 27 | | A23 | AD26 | | | Address/Data 26 |
| B24 | AD25 | | | Address/Data 25 | | A24 | GND10 | | | Ground |
| B25 | +3.3V | | | +3.3VDC | | A25 | AD24 | | | Address/Data 24 |
| B26 | C/BE3 | | | Command, Byte Enable 3 | | A26 | IDSEL | | | Initialization Device Select |
| B27 | AD23 | | | Address/Data 23 | | A27 | +3.3V03 | | | +3.3 VDC |
| B28 | GND | | | Ground | | A28 | AD22 | | | Address/Data 22 |
| B29 | AD21 | | | Address/Data 21 | | A29 | AD20 | | | Address/Data 20 |
| B30 | AD19 | | | Address/Data 19 | | A30 | GND12 | | | Ground |
| B31 | +3.3V | | | +3.3 VDC | | A31 | AD18 | | | Address/Data 18 |
| B32 | AD17 | | | Address/Data 17 | | A32 | AD16 | | | Address/Data 16 |
| B33 | C/BE2 | | | Command, Byte Enable 2 | | A33 | +3.3V05 | | | +3.3 VDC |
| B34 | GND13 | | | Ground | | A34 | FRAME | | | Address or Data phase |
| B35 | IRDY | | | Initiator Ready | | A35 | GND14 | | | Ground |
| B36 | +3.3V06 | | | +3.3 VDC | | A36 | TRDY | | | Target Ready |
| B37 | DEVSEL | | | Device Select | | A37 | GND15 | | | Ground |
| B38 | GND16 | | | Ground | | A38 | STOP | | | Stop Transfer Cycle |
| B39 | LOCK | | | Lock bus | | A39 | +3.3V07 | | | +3.3 VDC |
| B40 | PERR | | | Parity Error | | A40 | SDONE | | | Snoop Done |
| B41 | +3.3V08 | | | +3.3 VDC | | A41 | SBO | | | Snoop Backoff |
| B42 | SERR | | | System Error | | A42 | GND17 | | | Ground |
| B43 | +3.3V09 | | | +3.3 VDC | | A43 | PAR | | | Parity |
| B44 | C/BE1 | | | Command, Byte Enable 1 | | A44 | AD15 | | | Address/Data 15 |
| B45 | AD14 | | | Address/Data 14 | | A45 | +3.3V10 | | | +3.3 VDC |
| B46 | GND18 | | | Ground | | A46 | AD13 | | | Address/Data 13 |
| B47 | AD12 | | | Address/Data 12 | | A47 | AD11 | | | Address/Data 11 |
| B48 | AD10 | | | Address/Data 10 | | A48 | GND19 | | | Ground |
| B49 | GND20 | | | Ground | | A49 | AD9 | | | Address/Data 9 |
| B50 | (OPEN) | GND | (OPEN) | Ground or Open (Key) | | A50 | | | | |
| B51 | (OPEN) | GND | (OPEN) | Ground or Open (Key) | | A51 | | | | |
| B52 | AD8 | | | Address/Data 8 | | A52 | C/BE0 | | | Command, Byte Enable 0 |
| B53 | AD7 | | | Address/Data 7 | | A53 | +3.3V11 | | | +3.3 VDC |
| B54 | +3.3V12 | | | +3.3 VDC | | A54 | AD6 | | | Address/Data 6 |
| B55 | AD5 | | | Address/Data 5 | | A55 | AD4 | | | Address/Data 4 |
| B56 | AD3 | | | Address/Data 3 | | A56 | GND21 | | | Ground |
| B57 | GND22 | | | Ground | | A57 | AD2 | | | Address/Data 2 |
| B58 | AD1 | | | Address/Data 1 | | A58 | AD0 | | | Address/Data 0 |
| B59 | VCC08 | | | +5 VDC | | A59 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) |
| B60 | ACK64 | | | Acknowledge 64 bit ??? | | A60 | REQ64 | | | Request 64 bit ??? |
| B61 | VCC10 | | | +5 VDC | | A61 | VCC11 | | | +5 VDC |
| B62 | VCC12 | | | +5 VDC | | A62 | VCC13 | | | +5 VDC |
| B63 | RES | | | Reserved | | A63 | GND | | | Ground |
| B64 | GND | | | Ground | | A64 | C/BE[7]# | | | Command, Byte Enable 7 |
| B65 | C/BE[6]# | | | Command, Byte Enable 6 | | A65 | C/BE[5]# | | | Command, Byte Enable 5 |
| B66 | C/BE[4]# | | | Command, Byte Enable 4 | | A66 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) |
| B67 | GND | | | Ground | | A67 | PAR64 | | | Parity 64 ??? |
| B68 | AD63 | | | Address/Data 63 | | A68 | AD62 | | | Address/Data 62 |
| B69 | AD61 | | | Address/Data 61 | | A69 | GND | | | Ground |
| B70 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) | | A70 | AD60 | | | Address/Data 60 |
| B71 | AD59 | | | Address/Data 59 | | A71 | AD58 | | | Address/Data 58 |
| B72 | AD57 | | | Address/Data 57 | | A72 | GND | | | Ground |
| B73 | GND | | | Ground | | A73 | AD56 | | | Address/Data 56 |
| B74 | AD55 | | | Address/Data 55 | | A74 | AD54 | | | Address/Data 54 |
| B75 | AD53 | | | Address/Data 53 | | A75 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) |
| B76 | GND | | | Ground | | A76 | AD52 | | | Address/Data 52 |
| B77 | AD51 | | | Address/Data 51 | | A77 | AD50 | | | Address/Data 50 |
| B78 | AD49 | | | Address/Data 49 | | A78 | GND | | | Ground |
| B79 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) | | A79 | AD48 | | | Address/Data 48 |
| B80 | AD47 | | | Address/Data 47 | | A80 | AD46 | | | Address/Data 46 |
| B81 | AD45 | | | Address/Data 45 | | A81 | GND | | | Ground |
| B82 | GND | | | Ground | | A82 | AD44 | | | Address/Data 44 |
| B83 | AD43 | | | Address/Data 43 | | A83 | AD42 | | | Address/Data 42 |
| B84 | AD41 | | | Address/Data 41 | | A84 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) |
| B85 | GND | | | Ground | | A85 | AD40 | | | Address/Data 40 |
| B86 | AD39 | | | Address/Data 39 | | A86 | AD38 | | | Address/Data 38 |
| B87 | AD37 | | | Address/Data 37 | | A87 | GND | | | Ground |
| B88 | +5V | +3.3V | Signal Rail | +V I/O (+5 V or +3.3 V) | | A88 | AD36 | | | Address/Data 36 |
| B89 | AD35 | | | Address/Data 35 | | A89 | AD34 | | | Address/Data 34 |
| B90 | AD33 | | | Address/Data 33 | | A90 | GND | | | Ground |
| B91 | GND | | | Ground | | A91 | AD32 | | | Address/Data 32 |
| B92 | RES | | | Reserved | | A92 | RES | | | Reserved |
| B93 | RES | | | Reserved | | A93 | GND | | | Ground |
| B94 | GND | | | Ground | | A94 | RES | | | Reserved |
