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3. TECHNICAL BRIEF
3.14 Headset Interface
Headset connector has 12pins function, Differential Microphone input, Stereo Single-Ended Receiver
Output and four function key buttons.
Microphone input is connected to AIN2P/AIN2N and Stereo Output is connected to AOUT3L/AOUT3R.
R404
100
AUX_MIC_P
R405
100
AUX_MIC_N
JACK_DETECT
(GPIO_9)
CN401
13
1
2
3
4
5
6
7
8
9
10
11
12
14
2V5_VMIC
C403
0.1u
R406
4.7
R408
4.7
R431
100
C406
C407
1u
47p
Figure 3-35.
R409
R410
R411
R413
R414
2V8_VMEM
C401
C402
10u
39p
C408
C409
C410
1u
47p
47p
- 70 -
100
KEY_COL2
(HOOK_DETECT)
100
KEY_COL3
(MP3_FF)
100
KEY_COL4
(MP3_REW)
100
KEY_COL5
(MP3_PLAY/PAUSE)
680
KEY_ROW0
CN401
13
1
2
3
4
5
6
7
8
9
10
11
12
14
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