硬件接口定义规范-I.docVIP

1计算机侧为25针公插: PinNameITU-TDirDescription1GND101Shield Ground2TXD103Transmit Data3RXD104Receive Data4RTS105Request to Send5CTS106Clear to Send6DSR107Data Set Ready7GND102System Ground8CD109Carrier Detect9-RESERVED10-RESERVED11STF126Select Transmit Channel12S.CD?Secondary Carrier Detect13S.CTS?Secondary Clear to Send14S.TXD?Secondary Transmit Data15TCK114Transmission Signal Element Timing16S.RXD?Secondary Receive Data17RCK115Receiver Signal Element Timing18LL141Local Loop Control19S.RTS?Secondary Request to Send20DTR108Data Terminal Ready21RL140Remote Loop Control22RI125Ring Indicator23DSR111Data Signal Rate Selector24XCK113Transmit Signal Element Timing25TI142Test Indicator2PC/AT 机上的串行口是 9 针公插座，引脚定义为：PinNameDirDescription1CDCarrier Detect2RXDReceive Data3TXDTransmit Data4DTRData Terminal Ready5GNDSystem Ground6DSRData Set Ready7RTSRequest to Send8CTSClear to Send9RIRing Indicator3PC 并行接口外观是 25 针母插座：PinNameDirDescription1/STROBEStrobe2D0Data Bit 03D1Data Bit 14D2Data Bit 25D3Data Bit 36D4Data Bit 47D5Data Bit 58D6Data Bit 69D7Data Bit 710/ACKAcknowledge11BUSYBusy12PEPaper End13SELSelect14/AUTOFDAutofeed15/ERRORError16/INITInitialize17/SELINSelect In18GNDSignal Ground19GNDSignal Ground20GNDSignal Ground21GNDSignal Ground22GNDSignal Ground23GNDSignal Ground24GNDSignal Ground25GNDSignal Ground4PS/2 鼠标接口为 6 针母插，外观为：PinNameDirDescription1DATAKey Data2n/c-Not connected3GNDGnd4VCCPower , +5 VDC5CLKClock6n/c-Not connected5键盘接口为 5 针母插座：PinNameDescriptionTechnical1CLOCKClockCLK/CTS, Open-collector2DATADataRxD/TxD/RTS, Open-collector3n/cNot connectedReset on some very old keyboards.4GNDGround5VCC+5 VDC6网卡上以及 Hub 上接口的外观为 8 芯母插座 (RJ45)：网线上插头的外观为 8 芯公插头 (RJ45)：PinNameDescription1TX+Tranceive Data+ (发信号+)2TX-Tranceive Data- (发信号-)3RX+Receive Data+ (收信号+)4n/cNot connected (空脚)5n/cNot connected (空脚)6RX-Receive Data- (收信号-)7n/cNot connected (空脚)8n/cNot connected (空脚)7IDE 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：PinNameDirDescription1/RESETReset2GNDGround3DD7Data 74DD8Data 85DD6Data 66DD9Data 97DD5Data 58DD10Data 109DD4Data 410DD11Data 1111DD3Data 312DD12Data 1213DD2Data 214DD13Data 1315DD1Data 116DD14Data 1417DD0Data 018DD15Data 1519GNDGround20KEY-Key21n/c-Not connected22GNDGround23/IOWWrite Strobe24GNDGround25/IORRead Strobe26GNDGround27IO_CH_RDY28ALEAddress Latch Enable29n/c-Not connected30GNDGround31IRQRInterrupt Request32/IOCS16?IO ChipSelect 16