15 pci connector – SMC Networks 486DX4 User Manual
Page 33
AR-B1462 User¡
¦s Guide
3-15
(5) CPU Cooling Fan Power Connector (CN3)
1
4
3
2
CN3
1 +12V
2 GND
3 GND
4 VCC
Figure 3-33 CN3: CPU Cooling Fan Power Connector
3.2.15 PCI Connector
(1) PCI Connector Power Select (JP1)
JP1
1
2
3
4
Factory Default Setting
1
2
3
4
Disabled
Enabled 3.3V
Figure 3-34 JP1: PCI Connector Power Select
(2) 120-Pin PCI Connector (CN1)
1
CN1
2
5
3
7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49
51 53 55 57 59
4
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
50 52 54 56 58 60
61
65
63
67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 101 103 105 107 109
101 103 105 107 109
62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108
110 112 114 116 118 120
Figure 3-35 CN1: 120-Pin PCI Connector
CN1
Signal
CN1
Signal
CN1
Signal
CN1
Signal
1
-TRST
2
+12V
61
-12V
62
TCK
3
TMS
4
TDI
63
GND
64
TD0
5
+5V
6
-INTA
65
+5V
66
+5V
7
-INTC
8
+5V
67
-INTB
68
-INTD
9
NC
10
+5V
69
-PRST1
70
NC
11
NC
12
GND
71
-PRST2
72
GND
13
GND
14
NC
73
GND
74
NC
15
-RST
16
+5V
75
GND
76
CLK
17
-GNT
18
GND
77
GND
78
-REQ
19
NC
20
AD30
79
+5V
80
AD31
21
+3.3V
22
AD28
81
AD29
82
GND
23
AD26
24
GND
83
AD27
84
AD25
25
AD24
26
IDSEL
85
+3.3V
86
C/BE3
27
+3.3V
28
AD22
87
AD23
88
GND
29
AD20
30
GND
89
AD21
90
AD19
31
AD18
32
AD16
91
+3.3V
92
AD17
33
+3.3V
34
-FRAME
93
C/BE2
94
GND
35
GND
36
-TRDY
95
-IRDY
96
+3.3V
37
GND
38
-STOP
97
-DEVSL
98
GND
39
+3.3V
40
SDONE
99
-LOCK
100
-PERR
41
-SB0
42
GND
101
+3.3V
102
-SERR
43
PAR
44
AD15
103
+3.3V
104
C/BE1
45
+3.3V
46
AD13
105
AD14
106
GND
47
AD11
48
GND
107
AD12
108
AD10
49
AD9
50
C/BE0
109
GND
110
AD8
51
+3.3V
52
AD6
111
AD7
112
+3.3V
53
AD4
54
GND
113
AD5
114
AD3
55
AD2
56
AD0
115
GND
116
AD1
57
+5V
58
-REQ64
117
+5V
118
-ACK64
59
+5V
60
+5V
119
+5V
120
+5V
Table 3-8 Audio Connector Pin Assignment