3. TECHNICAL BRIEF
- 43 -
3.11 Headset Interface
This phone chooses a 5 pin type headset which 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.
INSERT
H
JACK_DETECT
CLOSE TO EARJACK
REMOVE
L
1M
R216
20K
R203
1M
R201
NA
C204
39p
C200
C287
39p
NA
C213
1K
R202
R210
4.7
C289
0.1u
5
20K
R206
J200
1
2
3
4
R211
12K
C209
33u
2V5_JACK
2V8_VEXT
NA
C205
2V8_VEXT
C277
R236
100
0.1u
VA204
AVL5M02-200
22u
C206
330K
R230
R204
1.5K
C212
39p
U200
GND
2
OUT
1
VCC
5
VIN+
3
4
VIN-
HOOK_DETECT
4.7
R228
AUXIP
AUXIN
JACK_DETECT
AUXOP
Figure 3-29. HEADSET JACK INTERFACE
Содержание C2100
Страница 1: ...Service Manual Model C2100 Service Manual C2100 P N MMBD0048201 Date April 2005 Issue 1 0 ...
Страница 54: ...4 TROUBLE SHOOTING 55 4 2 TX Trouble SW500 U503 X500 FL500 U501 U505 5 4 1 3 2 Test Points Figure 4 7 ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 7 MIC Trouble Soldering Check U203 C225 C224 C230 Test Points Figure 4 18 ...
Страница 76: ...4 TROUBLE SHOOTING 77 4 10 KEY backlight Trouble Test Points Figure 4 21 ...
Страница 104: ... 105 8 PCB LAYOUT ...
Страница 105: ... 106 8 PCB LAYOUT ...
Страница 113: ...10 STAND ALONE TEST 114 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 117: ...Note 118 ...
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