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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.7.5 Microphone for headset
MIC for Head_Set path as below:
Insert Headset
→
EAR_SENSE_N(pin8) go 0V
→
MSM6280 sense Head_Set insertion
→
EAR_MIC
signal
→
ESM6270
FB401
C538
27p
VREG_MSMP_2.7V
VOUT
3
U400 R1114D181D
6
CE
GND1
2
GND2
5
NC
4
1
VDD
VREG_MSMP_2.7V
R402 51
51
R401
C408
DNI
R400
2200
100K
R404
FB400
C537
2.2u
C416
33u
L400
270nH
1
19
2
21
3
CN400
33u
C417
4
IN2
NC1
2
NC2
3
6
NC3
NC4
7
8
OUT1
OUT2
5
PGND
9
FL400
NUF2114MN
IN1
1
EAR_MIC_P
EAR_MIC_LDO_EN
FM_ANT
HPH_R
HPH_L
C216
10%
Place near MSM
C213 47p
0.1u
C212
1u
C215
47p
C210
0.1u
C200
C206
1u
C204
10p
C214
0.1u
10u
1u
C203
L200
100nH
1u
C205
C211
0.1u
MIC1N
AF20
MIC1P
AE20
AF21
MIC2N
AF22
MIC2P
MICBIAS
T15
LINE_L_IN
AC21
AC22
LINE_L_IP
AC20
LINE_R_IN
LINE_R_IP
AC19
HPH_VREF
AA19
CCOMP
AA20
AF19
AUXIN
AE19
AUXIP
AUXOUT
AA18
MICBIAS
EAR_MIC_P
FM_AUDIO_L
FM_AUDIO_R
MIC1P
MIC1N
Z3X-BOX.COM
Summary of Contents for KF690
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