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针脚号定义（B）说明定义（A）说明1+12V+12V电压PRSNT1#热拔插存在检测2+12V+12V电压+12V+12V电压3+12V+12V电压+12V+12V电压4GND地GND地5SMCLK系统管理总线时钟JTAG2测试时钟/TCK6SMDAT系统管理总线数据JTAG3测试数据输入/TDI7GND地JTAG4测试数据输出/TDO8+3.3V+3.3V电压JTAG5测试模式选择/TMS9JTAG1测试复位/TRST+3.3V+3.3V电压103.3VAUX辅助电源+3.3V+3.3V电压11WAKE#链接激活信号PERST#电源准备好信号12RSVD保留针脚GND地13GND地REFCLK+14HSOp(0)REFCLK-15HSOn(0)GND地16GND地HSIp(0)17PRSNT2#热拔插存在检测HSIn(0)18GND地GND地19HSOp(1)RSVD20HSOn(1)GND21GNDHSIp(1)22GNGHSIn(1)23HSOp(2)GND24HSOn(2)GND25GNDHSIp(2)26GNGHSIn(2)27HSOp(3)GND28HSOn(3)GND29GNDHSIp(3)30RSVDHSIn(3)31PRSNT2#热拔插存在检测GND32GNGRSVD33HSOp(4)RSVD34HSOn(4)GND35GNDHSIp(4)36GNDHSIn(4)37HSOp(5)GND38HSOn(5)GND39GNDHSIp(5)40GNDHSIn(5)41HSOp(6)GND42HSOn(6)GND43GNDHSIp(6)44GNDHSIn(6)45HSOp(7)GND46HSOn(7)GND47GNDHSIp(7)0号信道发送差分信号对差分信号对参考时钟0号信道接收差分信号对x1带宽模式x4带宽模式48PRSNT2#热拔插存在检测HSIn(7)49GNDGND50HSOp(8)RSVD51HSOn(8)GND52GNDHSIp(8)53GNDHSIn(8)54HSOp(9)GND55HSOn(9)GND56GNDHSIp(9)57GNDHSIn(9)58HSOp(10)GND59HSOn(10)GND60GNDHSIp(10)61GNDHSIn(10)62HSOp(11)GND63HSOn(11)GND64GNDHSIp(11)65GNDHSIn(11)66HSOp(12)GND67HSOn(12)GND68GNDHSIp(12)69GNDHSIn(12)70HSOp(13)GND71HSOn(13)GND72GNDHSIp(13)73GNDHSIn(13)74HSOp(14)GND75HSOn(14)GND76GNDHSIp(14)77GNDHSIn(14)78HSOp(15)GND79HSOn(15)GND80GNDHSIp(15)81PRSNT2#热拔插存在检测HSIn(15)82GNDGNDx8带宽模式x16带宽模式x8带宽模式x16带宽模式