PCIe 接口 引脚定义 一览表-PCIe.U2.M2

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5

SMCLK 系统管理总线时钟JTAG2测试时钟/TCK 6

SMDAT 系统管理总线数据JTAG3测试数据输入/TDI 7

GND 地JTAG4测试数据输出/TDO 8

+3.3V +3.3V电压JTAG5测试模式选择/TMS 9

JTAG1测试复位/TRST +3.3V +3.3V电压10

3.3VAUX 辅助电源+3.3V +3.3V电压11

WAKE#链接激活信号PERST#电源准备好信号12

RSVD 保留针脚GND 地13

GND 地REFCLK+14

HSOp(0)REFCLK-15

HSOn(0)GND 地16

GND 地HSIp(0)17

PRSNT2#热拔插存在检测HSIn(0)18

GND 地GND 地19

HSOp(1)RSVD 20

HSOn(1)GND 21

GND HSIp(1)22

GNG HSIn(1)23

HSOp(2)GND 24

HSOn(2)GND 25

GND HSIp(2)26

GNG HSIn(2)27

HSOp(3)GND 28

HSOn(3)GND 29

GND HSIp(3)30

RSVD HSIn(3)31

PRSNT2#热拔插存在检测GND 32

GNG RSVD 33

HSOp(4)RSVD 34

HSOn(4)GND 35

GND HSIp(4)36

GND HSIn(4)37

HSOp(5)GND 38

HSOn(5)GND 39

GND HSIp(5)40

GND HSIn(5)41

HSOp(6)GND 42

HSOn(6)GND 43

GND HSIp(6)44

GND HSIn(6)45

HSOp(7)GND 46

HSOn(7)GND 47GND

HSIp(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) 49GND GND 50HSOp(8)RSVD 51HSOn(8)GND 52GND HSIp(8) 53GND HSIn(8) 54HSOp(9)GND 55HSOn(9)GND 56GND HSIp(9) 57GND HSIn(9) 58HSOp(10)GND 59HSOn(10)GND 60GND HSIp(10) 61GND HSIn(10) 62HSOp(11)GND 63HSOn(11)GND 64GND HSIp(11) 65GND HSIn(11) 66HSOp(12)GND 67HSOn(12)GND 68GND HSIp(12) 69GND HSIn(12) 70HSOp(13)GND 71HSOn(13)GND 72GND HSIp(13) 73GND HSIn(13) 74HSOp(14)GND 75HSOn(14)GND 76GND HSIp(14) 77GND HSIn(14) 78HSOp(15)GND 79HSOn(15)GND 80GND HSIp(15) 81PRSNT2#热拔插存在检测HSIn(15) 82GND GND

模式

x16带

宽模式

宽模式