3. TECHNICAL BRIEF
- 33 -
3.11 Headset Interface
This phone has 6 electrodes such as GND, AUXIP, AUXIN (this pin is floating), AUXOP,
JACK_DETECT, HOOK_DETECT. This type supports mono sound
Switching from Receiver to Headset Jack
If jack is inserted, JACK_DETECT goes from low to high.
Audio path is switched from receiver to earphone by JACK_DETECT interrupt.
Switching from Headset Jack to Receiver
If jack is removed, JACK_DETECT goes from high to low.
Audio path is switched from earphone to receiver by JACK_DETECT interrupt.
Hook detection
If hook-button is pressed, HOOK_DETECT is changed from high to low.
This is detected by AUXADC2.
And then hook is detected.
L
REMOVE
JACK_DETECT
INSERT
H
CLOSE TO EARJACK
R202
1.5K
NA
R204
R203
0
NA
C202
C209 0.1u
39p
C207
1
2
3
4
5
J200
22u
C203
1M
R205
C211
39p
C212
39p
EVL5M02200
VA203
10u
C208
R201
20K
VA204
EVL5M02200
U202
NCP563Q25T1
1
GND
4
NC
3
VOUT
Vin
2
1u
C216
0.1u
C201
C210
39p
2V8_VEXT
1M
R209
C217
1u
GND
2
OUT
1
VCC
5
VIN+
3
4
VIN-
2V5_JACK
LMV7291MGX-NOPB
U201
1K
R200
EVL5M02200
VA202
39p
C206
2V5_JACK
2V8_VEXT
2V8_VEXT
330K
R208
R206
4.7
4.7
R207
HOOK_DET
AUXIP
AUXIP
AUXIN
AUXOP
JACK_DETECT
Figure 3-14. HEADSET JACK INTERFACE
Содержание KG225
Страница 1: ...Date April 2006 Issue 1 0 Service Manual Model KG225 Service Manual KG225 M O B ILE CAM E R A ...
Страница 3: ... 4 ...
Страница 19: ...3 TECHNICAL BRIEF 20 Figure 3 4 SYSTEM INTERCONECTION OF AD6720 EXTERNAL INTERFACE ...
Страница 66: ...4 TROUBLE SHOOTING 67 4 12 KEY backlight Trouble Q300 R359 TEST POINT Figure 21 ...
Страница 79: ... 80 5 DOWNLOAD B Multi Download Procedure 1 Run GSM Multi Download program and select Setting ...
Страница 82: ... 83 5 DOWNLOAD 7 Check if the ADI option is set to Hermes 8 Press OK to end Configuration Select Rate ...
Страница 84: ... 85 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM ...
Страница 85: ... 86 ...
Страница 92: ... 93 KG225 8 PCB LAYOUT ...
Страница 93: ... 94 KG225 8 PCB LAYOUT ...
Страница 101: ... 102 10 STAND ALONE TEST Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 109: ... 110 ...
Страница 125: ...Note ...
Страница 126: ...Note ...