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3. TECHNICAL BRIEF
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3.12 Headset Interface
This phone chooses a 6 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 high to low.
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 low to high.
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 AD6527(GPIO_36).
And then hook is detected.
CLOSE TO EARJACK
(GPIO_39)
(GPIO_45)
(1608)
(3 pole, ENJE0003501)
2V8_VEXT
EVL5M02200
VA203
22u
C206
C202
10u
J201
7502-2.5G-SB1-A
NC
4
VOUT
3
2
Vin
NCP563Q25T1
U201
GND
1
NA
C209
2V5_JACK
0.1u
C201
39p
C219
C216
0.1u
R225
1M
R204
1.5K
0.1u
C203
2V5_JACK
VA204
EVL5M02200
39p
C220
33u
C214
R201
1K
HOOK_DETECT
JACK_DETECT
AUXIP
AUXIN
AUXOP
Figure 3-26. HEADSET JACK INTERFACE
Summary of Contents for KG240
Page 1: ...Date April 2006 Issue 1 0 Service Manual Model KG245 Service Manual KG245 ...
Page 3: ... 4 ...
Page 92: ...5 DOWNLOAD AND CALIBRATION 93 5 2 3 Configuration Setting C GSMULTI Model MG210 dll ...
Page 93: ...5 DOWNLOAD AND CALIBRATION 94 5 2 4 Press Start Button KG245 ...
Page 94: ...5 DOWNLOAD AND CALIBRATION 95 5 2 5 After Start Button Which Stand by condition KG245 ...
Page 95: ...5 DOWNLOAD AND CALIBRATION 96 5 2 6 SW downloading Condition KG245 ...
Page 96: ...5 DOWNLOAD AND CALIBRATION 97 5 2 7 SW downloading END Condition KG245 ...
Page 99: ...5 DOWNLOAD AND CALIBRATION 100 4 Click on CALIBRATION START button KG245 KG245 ...
Page 100: ...5 DOWNLOAD AND CALIBRATION 101 6 BLOCK DIAGRAM ...
Page 101: ... 102 ...
Page 110: ... 111 8 PCB LAYOUT ...
Page 111: ... 112 8 PCB LAYOUT ...
Page 112: ... 113 KG245 8 PCB LAYOUT ...
Page 113: ... 114 KG245 8 PCB LAYOUT ...
Page 121: ...10 STAND ALONE TEST 122 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 125: ... 126 ...
Page 127: ... 128 ...
Page 145: ...Note ...
Page 146: ...Note ...