LG GD510 - Audio

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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. Technical brief
GD510 Operational Description Revision A
LG Electronics 40/113 LGE Property
3.12. Audio
GD510 Audio signal flow diagram as following diagram.
Figure 16 Audio signal flow diagram
3.12.1. Audio amplifier
Audio amplifier sub system IC is an audio power amplifier capable of delivering 1.2 W of continuous
average power into a mono 8 load, 50mW per channel of continuous average power into stereo 32
single-ended (SE) loads. The MAX9877 features a 32-step digital volume control and ten distinct output
modes. The digital volume control, output modes (mono/SE/OCL) are programmed through a two-wire
I2C interface that allows flexibility in routing and mixing audio channels.
Figure 17 Audio amplifier PMIC
BT
+
FM
MAX
9877
MIC
BBP
PMB8877
SPK
RCV
mt
lGtpjG
MUIC
1u
C205
C206 1u
1u
C208
8.2R202
27p
C210 C211
27p
R203 8.2
1u
C213
C215
1u
1uC223
MAX9877AEWP_TG45
U202
4C 3D
B4
D4
C3
B3
B5B2
D5C2
C1
D2
D1
A2
A1A5
A4
5C
1B
3A
SSV
DDV D
DVP
C1N
C1P HPR
HPL
INA2
INA1
INB2
INB1 OUT+
BIAS OUT-
SDA
SCL
RXIN+
RXIN-
DNG
DNGP
1u
C214
220
MPZ1608S221A
FB201
VBAT
BB_SND_R
I2C_SDA
I2C_SCL
BB_SND_L
EAR_P
EAR_N
SPK_RCV_N
SPK_RCV_PFM_SND_L
FM_SND_R
HSO_R
HSO_L