User Guide

User Guide
Pin Assignments for I/O Connectors: Dell Latitude C840 Service Manual

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Pin Assignments for I/O Connectors

Dell™ Latitude™ C840 Service Manual


USB Connector

Pin

Signal

1

VCC

2

-Data

3

+Data

4

Ground

Serial Connector

Pin

Signal

Pin

Signal

1

DCD

6

DSR

2

RXDA

7

RTS

3

TXDA

8

CTS

4

DTR

9

RI

5

GND

 

 

Parallel Connector

Pin

Signal

Pin

Signal

1

STRB#

11

BUSY

2

PD0

12

PE

3

PD1

13

SLCT

4

PD2

14

AFDF#

5

PD3

15

ERROR#

6

PD4

16

INIT#

7

PD5F

17

SLCT_IN

8

PD6F

18-23

GND

9

PD7F

24

DFDD/LPT#

10

ACK#

25

GND

Video Connector

Pin

Signal

Pin

Signal

1

RED

9

CRT_VCC

2

GREEN

10

GND

3

BLUE

11

MSEN#

4

NC

12

DAT_DDC2

5

GND

13

HSYNC

6

GND

14

VSYNC

7

GND

15

CLK_DDC2

8

GND

 

 

PS/2 Connector

Pin

Signal

1

DAT_KBD

2

DAT_SM1

3

GND

4

PS2VCC

5

CLK_KBD

6

CLK_SM1

S-Video TV-Out Connector

S-Video

Pin

Signal

1

GND

2

GND

3

DLUMA-L

4

DCRMA-L

Composite Video

Pin

Signal

5

SPDIF

6

DCMPS-L

7

SPGND

Docking Connector

Pin

Signal

Pin

Signal

1

STRB#/5V

101

VGA_GRN

2

PD0

102

GND

3

PD1

103

VGA_RED

4

PD2

104

GND

5

PD3

105

VGA_BLU

6

PD4

106

DOCK_SD/MODE

7

PD5

107

D_IRTX

8

PD6

108

D_IRRX

9

PD7

109

GND

10

GND

110

SPIRQB#

11

DOCK_SPKR

111

SPIRQC#

12

DOCK_MIC

112

DAT_DDC2

13

DOCK_LINE

113

CLK_DDC2

14

DOCK_CDROM

114

SPAR

15

GND

115

SPME#

16

M_SEN#

116

GND

17

POWER_SW#

117

SSERR#

18

QPCIEN#

118

SPERR#

19

S1.6M_EN#

119

SLOCK#

20

DFDD/LPT#

120

SSTOP#

21

GND

121

GND

22

NC

122

SDEVSEL#

23

NC

123

STRDY#

24

D_ATCTLED

124

SIRDY#

25

D_PWRLED

125

SFRAME#

26

DOCK_PWR_SRC

126

SCLKRUN#

27

DOCK_PWR_SRC

127

GND

28

DOCK_PWR_SRC

128

SGNTA#

29

GND

129

SREQA#

30

+5VDOCK

130

SGNT0#

31

+5VDOCK

131

SREQ0#

32

+5VDOCK

132

SPCIRST#

33

+5VDOCK

133

SH1SEL#

34

+5VDOCK

134

GND

35

GND

135

SWRPRT#

36

DOCK_PWR_SRC

136

SDSKCHG#/DRQ

37

DOCK_PWR_SRC

137

SDIR#

38

DOCK_PWR_SRC

138

STRK0#

39

DOCK_PWR_SRC

139

SSTEP#

40

GND

140

SDRV1#

41

DOCK_+DC_IN

141

GND

42

DOCK_+DC_IN

142

SMRT1#

43

DOCK_+DC_IN

143

SWRDATA#

44

DOCK_+DC_IN

144

SWGATE#

45

DOCK_+DC_IN

145

SRDATA#

46

DOCK_+DC_IN

146

SINDEX#

47

DOCK_+DC_IN

147

GND

48

DOCK_+DC_IN

148

NC

49

GND

149

+5VALW

50

LOW_PWR

150

NC

51

HSYNC

151

GND

52

VSYNC

152

CLK_SPCI

53

GND

153

GND

54

DOCKED

154

SAD0

55

USB_VD1+

155

SAD1

56

USB_VD1-

156

SAD2

57

GND

157

SAD3

58

USB_VD2+

158

SAD4

59

USB_VD2-

159

SAD5

60

DOCKOCI#

160

SAD6

61

RUN_ON#

161

GND

62

GND

162

SAD7

63

NC

163

SAD8

64

DOCK_SCLK

164

SC/BE0#

65

DOCK_LRCK

165

SAD9

66

DOCK_MCLK

166

SAD10

67

GND

167

SAD11

68

+12V

168

SAD12

69

AFD#

169

GND

70

ERROR#

170

SAD13

71

ACK#

171

SAD14

72

GND

172

SAD15

73

INIT#

173

SAD16

74

SLCT_IN#

174

SC/BE1#

75

BUSY

175

CD/BE2#

76

PE

176

GND

77

SLCT

177

SAD17

78

GND

178

SAD18

79

DAT_SMB

179

SAD19

80

DCLK_SMB

180

SAD20

81

SMB_INIT#

181

SAD21

82

GND

182

GND

83

DAT_DOCKSM1

183

SAD22

84

CLK_DOCKSM1

184

SAD23

85

DAT_DOCKKBD

185

SAD24

86

CLK_DOCKKBD

186

SC/BE3#

87

GND

187

SAD25

88

RI0

188

GND

89

CTS0

189

SAD26

90

RTS0

190

SAD27

91

DSR0

191

SAD28

92

GND

192

SAD29

93

DTR0

193

SAD30

94

TXD0#

194

SAD31

95

RXD0#

195

GND

96

DCD0

196

NC

97

NC

197

NC

98

+5VSUS

198

NC

99

NC

199

NC

100

NC

200

GND

IEEE 1394 Connector

Pin

Signal

1

TPB-

2

TPB+

3

TPA-

4

TPA+


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