LG CU405 Service Manual page 53

3. TECHNICAL BRIEF
MSM6280 CODEC pins
CON300
SDRAM_ADDR(0:12)
KJA-PH-0-0134
ENJE0003105
6
LGE Internal Use Only
D300
33u C302
2
5 R300 51
4
1
3 33u C303
R302 51
TTY_ADC_DET
Figure . Audio part schematics
Place near
C205
MSM pin W18
0.1u
10% (CODEC VSS)
F25
SDCC_DAT1_GPIO99
M25
SDCC_DAT2_GPIO100
M26
SDCC_DAT3_GPIO101
MIC_JACK
HPH_R
MIC_JACK
HPH_L
VREG_MSMP_2.6V
2.2K R303
VIN-
VIN+
Copyright © 2007 LG Electronics. Inc. All right reserved.
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0.1u C300
MIC2P
EAR_SENSE_N
Pull-down
Pls, check MICBIAS for a hook
switch detection to R304 manually.
VREG_MSMP_2.6V
C310
0.1u
5
4
VCC 1
HOOK_SENSE
3 OUT
GND
Pull-down
2
U300
NCS2200SQ2T2G
Only for training and service purposes