PCI总线: 为32位总线,且可扩展为64位,有124个脚(实际上去掉4个定位卡有120引脚),AD线有32条,工作频率为33MHZ/66MHZ, 大传输速率133MB/S。总线宽度32位(5V) 64位 3.3V。
PCI总线(32位)底视图
名称 | 信号名称 | 信号名称 | Pin | Side A1 | R | Side A2 | R | Side B1 | R | Side B2 | R | 1 | TRST# | 352 | +12V | 535 | -12V | ∞ | TCK | 0 | 2 | TMS | ∞ | TD1 | 350 | Ground | 0 | TDO | ∞ | 3 | +5V | 352 | INTA# | 526 | +5V | 351 | +5V | 350 | 4 | INTC# | 528 | +5V | 350 | INTB# | 526 | INTD # | 526 | 5 | Reserved | 543 | +5V | 351 | PRSNT1 # | ∞ | Reserved | ∞ | 6 | Reserved | ∞ | Ground | 0 | PRSNT2 # | ∞ | Ground | 0 | 7 | Ground | 0 | Reserved | ∞ | Ground | 0 | Reserved | ∞ | 8 | Reset# | 477 | +5V | 351 | Ground | 0 | CLK | 734 | 9 | GNT# | 500 | Ground | 0 | Ground | 0 | REQ # | 473 | 10 | Reserved | 1955 | AD(30) | 477 | +5V | 350 | AD(31) | 477 | 11 | +3.3V | ∞ | AD(28) | 477 | AD(29) | 477 | Ground | 0 | 12 | AD(26) | 477 | Ground | 0 | AD(27 | 477 | AD(25) | 477 | 13 | AD(24) | 476 | IDSEL | 593 | +3.3V | ∞ | C/BE #(3) | 486 | 14 | +3.3V | ∞ | AD(22) | 477 | AD(23) | 477 | Ground | 0 | 15 | AD(20) | 477 | Ground | 0 | AD(21) | 477 | AD(19) | 477 | 16 | AD(18) | 460 | AD(16) | 477 | +3.3V | ∞ | AD(17) | 477 | 17 | +3.3V | ∞ | FRAME# | 477 | C/BE #(2) | 484 | Ground | 0 | 18 | Ground | 0 | TRDY # | 477 | IRDY # | 477 | TRDY # | ∞ | 19 | Ground | 0 | STOP # | 477 | DEVSEL # | 484 | Ground | 0 | 20 | +3.3V | ∞ | SDONE | 1669 | LOCK # | 497 | PERR # | 1666 | 21 | SBO # | 1667 | Ground | 0 | +3.3V | ∞ | SERR # | 472 | 22 | PAR | 476 | AD(15) | 477 | +3.3V | ∞ | C/BE #(1) | 485 | 23 | +3.3V | ∞ | AD(13) | 477 | AD(14) | 477 | Ground | 0 | 24 | AD(11) | 477 | Ground | 0 | AD(12) | 477 | AD(10) | 477 | 25 | AD(09) | 477 | 定位卡 | | Ground | 0 | 定位卡 | | 26 | 定位卡 | | C/BE #(0) | 485 | 定位卡 | | AD(08) | 477 | 27 | +3.3V | ∞ | AD(06) | 477 | AD(07) | 477 | +3.3V | ∞ | 28 | AD(04) | 477 | Ground | 0 | AD(O5) | 477 | AD(03) | 477 | 29 | AD(02) | 477 | AD(00) | 477 | Ground | 0 | AD(01) | 477 | 30 | +5V | 350 | REQ 64# | 1880 | +5V | 350 | ACK 64# | ∞ | 31 | +5V | 351 | +5V | 352 | +5V | 350 | +5V | 350 | 注: 1、“#”表低电平有效。 2、Reserved为保留线。 3、Ground为地。 4、AD线为数据地址复合线。
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