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1、PC 机内部设备接口引脚定义 （硬盘、软驱、SCSI 接口等）PS/2 键盘接口为 6 针母插，外观为：引脚定义PinNameDirDescription1DATAKey Data2n/c-Not connected3GNDGnd4VCCPower , +5 VDC5CLKClock6n/c-Not connected8 软驱接口定义8 软驱现在找都找不到，不知此档案有没有用，驱动器的接口引脚定义为： PinNameDirDescription2/REDWCReduced Write Current4n/c-Reserved6n/c-Reserved8n/c-Reserved10/FD2SDi
2、sk is two sided12/DCGDisk has been changed/door open14/SIDESide select16/DLOCKDoor lock18/HLDHead load20/INDEXIndex Pulse22/READYReady24n/c-Not connected26/SEL1Select Drive 128/SEL2Select Drive 230/SEL3Select Drive 332/SEL4Select Drive 434/DIRDirection36/STEPStep38/WDATWrite data40/WGATWrite gate42/
3、TR00Track 00 (Zero)44/WPROTWrite protect46/RDATARead data48n/c-Not connected50n/c-Not connected软驱接口3.5 软驱和 5 软驱连线，外观为：引脚定义PinNameDirDescription2/REDWCDensity Select4n/cReserved6n/cReserved8/INDEXIndex10/MOTEAMotor Enable A12/DRVSBDrive Sel B14/DRVSADrive Sel A16/MOTEBMotor Enable B18/DIRDirection20/
4、STEPStep22/WDATEWrite Data24/WGATEFloppy Write Enable26/TRK00Track 028/WPTWrite Protect30/RDATARead Data32/SIDE1Head Select34/DSKCHGDisk ChangeIDE 接口 IDE 是 Integrated Drive Electronics 的缩写，由 Compaq 和 Western Digital 公司开发，新版的 IDE 命名为 ATA 即 AT bus Attachment，IDE 接口在设备和主板侧的外观为 40 脚插针：IDE 电缆外观为：引脚定义PinN
5、ameDirDescription1/RESETReset2GNDGround3DD7Data 74DD8Data 85DD6Data 66DD9Data 97DD5Data 58DD10Data 109DD4Data 410DD11Data 1111DD3Data 312DD12Data 1213DD2Data 214DD13Data 1315DD1Data 116DD14Data 1417DD0Data 018DD15Data 1519GNDGround20KEY-Key21n/c-Not connected22GNDGround23/IOWWrite Strobe24GNDGround2
6、5/IORRead Strobe26GNDGround27IO_CH_RDY28ALEAddress Latch Enable29n/c-Not connected30GNDGround31IRQRInterrupt Request32/IOCS16?IO ChipSelect 1633DA1Address 134n/c-Not connected35DA0Address 036DA2Address 237/IDE_CS0(1F0-1F7)38/IDE_CS1(3F6-3F7)39/ACTIVELed driver40GNDGroundATA 44 接口 ATA 是 AT bus Attach
7、ment 的缩写，由 Conner, Seagate 和 Western Digital 公司开发，是新版的 IDE 接口，ATA 44 接口是 ATA 接口再加上电源等线，主要用于便携式计算机用 2.5 硬盘，在设备和主板侧的外观为 44 脚插针：ATA 44 电缆外观为：引脚定义ATA 44 接口的 1-40 脚的定义同 ATA，41-44 的定义为：PinNameDirDescription41+5VL+5 VDC (Logic)42+5VM+5 VDC (Motor)43GNDGround44/TYPEType (0=ATA)ESDI 接口 ESDI 是 Enhanced Small
8、Device Interface 的缩写，早在 1980 年由 Maxtor 公司开发，是老式硬盘的接口，它的电缆由两部分组成，ESDI 接口在接口卡侧的外观为 34 脚和 20 脚公插针：在硬盘侧为 34 脚的控制信号和 20 脚数据信号：引脚定义34 脚的控制信号： PinNameDescription2Head Sel 34Head Sel 26Write Gate8Config/Stat Data10Transfer Acknowledge12Attention14Head Sel 016Sect/Add MK Found18Head Sel 120Index22Ready24Tran
9、sfer Request26Drive Sel 128Drive Sel 230Drive Sel 332Read Gate34Command Data20 脚的数据信号： PinNameDescription1Drive Selected2Sect/Add MK Found3Seek Complete4Address Mark Enable5(reserved, for step mode)6GNDGround7Write Clock+8Write Clock-9Cartridge Changed10Read Ref Clock+11Read Ref Clock-12GNDGround13N
10、RZ Write Data+14NRZ Write Data-15GNDGround16GNDGround17NRZ Read Data+18NRZ Read Data-19GNDGround20GNDGroundMitsumi CD-ROM 接口Mitsumi CD-ROM 在光驱和接口卡侧的外观为 40 脚插针：连接电缆外观为：引脚定义PinNameDescription1A0Address Bit 02GNDGround3A1Address Bit 14GNDGround5n/cNot connected6GNDGround7n/cNot connected8GNDGround9n/cN
11、ot connected10GNDGround11n/cNot connected12GNDGround13INTInterrupt14GNDGround15REQData request For DMA16GNDGround17ACKData Acknowledge For DMA18GNDGround19RERead Enable20GNDGround21WEWrite Enable22GNDGround23ENBus Enable24GNDGround25DB0Data Bit 026GNDGround27DB1Data Bit 128GNDGround29DB2Data Bit 230GNDGround31DB3Data Bit 332GNDGround33DB4Data Bit 434GNDGround35DB5Data Bit 536GNDGround37DB6Data Bit 638GNDGround39DB7Data Bit 740GNDGroundPanasonic CD-ROM 接口Panasonic CD-ROM 在光驱和接口卡侧的外观为 40 脚插针：连接电缆外观为：引脚定义PinNameDescription1GNDGround2RESETCD-R
