3.10 Headset Interface
This phone has 6 electrodes such as GND, AUXIP, AUXIN, AUXOP_L,AUXOP_R, JACK_SENSE
ACC_DETECT.
Switching from Receiver to Headset Jack
If jack is inserted, JACK_SENSE goes from high to low.
Audio path is switched from receiver to earphone by JACK_SENSE interrupt.
Switching from Headset Jack to Receiver
If jack is removed, JACK_SENSE goes from low to high.
Audio path is switched from earphone to receiver by JACK_DETECT interrupt.
Hook detection
If hook-button is pressed, ACC_DET is changed from high to low.
This is detected by ACC_DETECT of AD6721
And then hook is detected.
- 38 -
3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
11 : R/ON
6 : USB D+
7 : USB D-
4 : EAR_L
14 : DSR
8 : JACK_D
12,13 : CHG
5 : EAR_R
2 : AUDIO
9,10 : BATT
16,17 : UART
15 : VUSB
100K
R312
100nH
L301
L300
100nH
4.7u
C330
2V8_VEXT
6
7
8
9
12
13
14
15
16
17
18
19
2
20
21
22
3
4
5
HSEJ-18S04-25R
CN302
1
10
11
C349
47p
C315
1u
1u
C334
VBAT
R310
20
100K
R314
47
R318
18p
C332
C360
100p
USB_VBUS
VCH
100K
R315
C350
47p
18p
C333
HS_OUT_L
HS_OUT_R
JACK_DETECT
IO_P7
IO_P6
RPWRON
USC2
HS_MIC
USC1
DSR
Figure 3.10 HEADSET JACK INTERFACE
C336
100p
1.5K
R316
2V5_VMIC
20
R325
2.2K
R322
C371
0.1u
10u
C329
27p
C328
27p
C327
0.1u
C372
ACC_DET
HS_MIC
AUXIN
AUXIP
Содержание KP210
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Страница 107: ... 108 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 121: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 122 ...
Страница 138: ...Note ...
Страница 139: ...Note ...