10．PCI 是 Peripheral Component Interconnect 的缩写接口卡的外观PCI 标准 32 位/64 位 接口卡----------------------------------------------------------------| PCI 元件侧 （B 面） || || || || ____ 32 位引脚部分 64 位引脚部分 ___||___| |||||||--|||||||||||||||||--|||||||--||||||||||||||^ ^ ^ ^ ^ ^ ^ ^b01 b11 b14 b49 b52 b62 b63 b94PCI 5V 32/64位卡| optional || ____ 32 位引脚部分 64 位引脚部分 ___||___| ||||||||||||||||||||||||||--|||||||--||||||||||||||PCI 3.3V 32/64位卡| optional || ____ 32 位引脚部分 64 位引脚部分 ___||___| |||||||--||||||||||||||||||||||||||--||||||||||||||Pin +5V +3.3V Universal DescriptionA1 TRST Test Logic ResetA2 +12V +12 VDCA3 TMS Test Mde SelectA4 TDI Test Data InputA5 +5V +5 VDCA6 INTA Interrupt AA7 INTC Interrupt CA8 +5V +5 VDCA9 RESV01 Reserved VDCA10 +5V +3.3V Signal Rail +V I/O (+5 V or +3.3 V)A11 RESV03 Reserved VDCA12 GND03 (OPEN) (OPEN) Ground or Open (Key)A13 GND05 (OPEN) (OPEN) Ground or Open (Key)A14 RESV05 Reserved VDCA15 RESET ResetA16 +5V +3.3V Signal Rail +V I/O (+5 V or +3.3 V)A17 GNT Grant PCI useA18 GND08 GroundA19 RESV06 Reserved VDCA20 AD30 Address/Data 30A21 +3.3V01 +3.3 VDCA22 AD28 Address/Data 28A23 AD26 Address/Data 26A24 GND10 GroundA25 AD24 Address/Data 24A26 IDSEL Initialization Device SelectA27 +3.3V03 +3.3 VDCA28 AD22 Address/Data 22A29 AD20 Address/Data 20A30 GND12 GroundA31 AD18 Address/Data 18A32 AD16 Address/Data 16A33 +3.3V05 +3.3 VDCA34 FRAME Address or Data phaseA35 GND14 GroundA36 TRDY Target ReadyA37 GND15 GroundA38 STOP Stop Transfer CycleA39 +3.3V07 +3.3 VDCA40 SDONE Snoop DoneA41 SBO Snoop BackoffA42 GND17 GroundA43 PAR ParityA44 AD15 Address/Data 15A45 +3.3V10 +3.3 VDCA46 AD13 Address/Data 13A47 AD11 Address/Data 11A48 GND19 GroundA49 AD9 Address/Data 9A52 C/BE0 Command, Byte Enable 0。