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ETX-945 User Manual 1.00 www.diamondsystems.com Page 16
4.1 ETX1 Connector
The 100-pin, high-density ETX1 connector implements the board’s PCI bus, USB, and audio signals, as indicated
in the table below. Further information regarding each of these signal groups follows the table. (Note: Pins
designated “RESERVED” should be left unconnected.)
GND
1
2
GND
VCC
51
52
VCC
PCICLK3
3
4
PCICLK4
PAR
53
54
SERR#
GND
5
6
GND
GPERR#
55
56
RESERVED
PCICLK1
7
8
PCICLK2
PME#
57
58
USB2-
REQ3#
9
10
GNT3#
LOCK#
59
60
DEVSEL#
GNT2#
11
12
3V
TRDY#
61
62
USB3-
REQ2#
13
14
GNT1#
IRDY#
63
64
STOP#
REQ1#
15
16
3V
FRAME#
65
66
USB2+
GNT0#
17
18
RESERVED
GND
67
68
GND
VCC
19
20
VCC
AD16
69
70
CBE2#
SERIRQ
21
22
REQ0#
AD17
71
72
USB3+
AD0
23
24
3V
AD19
73
74
AD18
AD1
25
26
AD2
AD20
75
76
USB0-
AD4
27
28
AD3
AD22
77
78
AD21
AD6
29
30
AD5
AD23
79
80
USB1-
CBE0#
31
32
AD7
AD24
81
82
CBE3#
AD8
33
34
AD9
VCC
83
84
VCC
GND
35
36
GND
AD25
85
86
AD26
AD10
37
38
AUXAL
AD28
87
88
USB0+
AD11
39
40
MIC
AD27
89
90
AD29
AD12
41
42
AUXAR
AD30
91
92
USB1+
AD13
43
44
ASVCC
PCIRST#
93
94
AD31
AD14
45
46
SNDL
INTC#
95
96
INTD#
AD15
47
48
ASGND
INTA#
97
98
INTB#
CBE1#
49
50
SNDR
GND
99
100
GND