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Chapter 3
Table 3-22. Audio Interface Pin/Signal Descriptions (J28)
Pin #
Signal
1
VIDEO_L
2
VIDEO_GND
3
VIDEO_R
4
CD_L
5
CD_GND
6
CD_R
7
LINE_IN_L
8
LINE_IN_GND
9
LINE_IN_R
10
MIC1
11
MIC_GND
12
MIC2
13
MIC_REF
14
KEY
15
PHONE_IN
16
PHONE_GND
17
MONO_OUT
18
MONO_GND
19
-AOUT_L
20
+AOUT_L
21
-AOUT_R
22
+AOUT_R
23
GND
24
HP_L
25
HP_R
26
HP_DETECT
Notes: The shaded area denotes power or ground.
LittleBoard 700
Description
Video audio signal in left channel
Video digital ground
Video audio signal in right channel
CD-ROM signal left channel
CD-ROM digital ground
CD-ROM signal right channel
Line in signal left channel
Line in digital ground
Line in signal right channel
Microphone in signal 1 or left channel
Microphone digital ground
Microphone in signal 2 or right channel
Microphone reference signal
Key
Phone signal in
Phone digital ground
Monaural signal out
Monaural digital ground
- Audio out signal left channel
+ Audio out signal left channel
- Audio out signal right channel
+ Audio out signal right channel
Ground
Headphone signal left channel
Headphone signal right channel
Headphone signal detect
Reference Manual
Hardware
51
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