Connector Pin Assignments

PCI Expressx1, x4, x8, and x16 PCI Express Connector
Pin A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

Signal

Pin

Signal

Pin

Signal

Pin

Signal

Pin

Signal

 

 

 

 

 

 

 

 

 

 

1

PRSNT1#

6

JTAG3

11

PERST#

16

PERp0

21

PERp1

2

+12V

7

JTAG4

12

GND

17

PERn0

22

PERn1

3

+12V

8

JTAG5

13

REFCLK+

18

GND

23

GND

4

GND

9

+3.3v

14

REFCLK-

19

RSVD

24

GND

5

JTAG2

10

+3.3v

15

GND

20

GND

25

PERp2

 

 

 

 

 

 

 

 

 

 

26

PERn(2)

31

GND

36

PERn4

41

GND

46

GND

27

GND

32

RSVD

37

GND

42

GND

47

PERp7

28

GND

33

RSVD

38

GND

43

PERp6

48

PERn7

29

PERp3

34

GND

39

PERp5

44

PERn6

49

GND

30

PERn3

35

PERp4

40

PERn5

45

GND

50

RSVD

 

 

 

 

 

 

 

 

 

 

51

GND

56

PERp9

61

PERn10

66

GND

71

GND

52

PERp8

57

PERn9

62

GND

67

GND

72

PERp13

53

PERn8

58

GND

63

GND

68

PERp12

73

PERn13

54

GND

59

GND

64

PERp11

69

PERn12

74

GND

55

GND

60

PERp10

65

PERn11

70

GND

75

GND

 

 

 

 

 

 

 

 

 

 

76

PERp14

81

PERn15

 

 

 

 

 

 

77

PERn14

82

GND

 

 

 

 

 

 

78GND

79GND

80PERp15

Pin B information is on the next page

Notes:

x1 PCI Express uses pins 1-18

x4 PCI Express uses pins 1-32

x8 PCI Express uses pins 1-49

x16 PCI Express uses pins 1-8

 

A–8

433611-001

Service Reference Guide, dx7300