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6. BLOCK DIAGRAM
- 143 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LGE Internal Use Only
Star Tablet : Audio
T20
T20
BT
BT
WM8994 (CODEC)
WM8994 (CODEC)
BT_PCM_SYNC
D
A
P1
_D
IN
D
A
P1
_D
O
U
T
D
A
P1
_F
S
D
A
P1
_S
CL
K
D
A
P2
_D
IN
_R
X
D
A
P2
_D
O
U
T_
TX
D
A
P2
_F
S
D
A
P2
_S
CL
K
BT_PCM_DIN
BT_PCM_DOUT
BT_PCM_CLK
AUDI
O_MCLK1
AUDI
O_MCLK2
G
PI
O
4/
LRC
LK
2
G
PI
O
5/
D
A
CD
A
T2
G
PI
O
7/
A
D
CD
A
T2
G
PI
O
3/
BC
LK
2
LRCLK1
D
A
CD
A
T1
ADCDAT
1
BC
LK
1
M
CL
K1
M
CL
K2
SPK_L1-
SPK_L2-
DAP4_FS
DAP4_DIN
DAP4_DOUT
DAP4_SCLK
D
A
P1
_S
CL
K
D
A
P1
_F
S
D
A
P1
_D
O
U
T
D
A
P1
_D
IN
D
A
P_
M
CL
K2
D
A
P_
M
CL
K1
D
A
P2
_F
S
D
A
P2
_D
O
U
T
D
A
P2
_D
IN
D
A
P2
_S
CL
K
SWB-B25
A
U
D
IO
_I
N
T_
N
ADCLGCLK/GPI
O
1
SPI
2_
CS
1_
N
G
EN
2_
I2
C_
SC
L
G
EN
2_
I2
C_
SD
A
EC
H
O
_I
2C
_S
D
A
EC
H
O
_I
2C
_S
CL
SC
LK
SD
A
A
V
D
D
1_
3V
0_
EN
D
CV
D
D
_1
V
2_
EN
LDO1EN
A
LDO2EN
A
GMI_
CS2_N
GMI_
CS3_N
BT_PCM_SYNC
BT_PCM_OUT
BT_PCM_IN
BT_PCM_CLK
IN
2L
N
/D
N
IC
D
A
T1
IN
2L
N
/D
N
IC
D
A
T2
MIC
MIC_P
MIC_BIAS
EJ_MIC
EAR_L
EAR_R
3.5
Ȱ
Jack
SPI2_CS2_N
EAR_SENSE
MIC_N
FM31-39X
DSP
(Voice Processor)
FM31-39X
DSP
(Voice Processor)
SPK_R+
SPK_R-
Analog S/W
SPK_L+
SPK_L+
SPK_CHANGE
SPDIF_OUT
D
A
P2
_D
O
U
T_
TX
D
A
P2
_D
IN
_R
X
DAP2_DOUT
DAP2_DIN
AUDIO_MCLK1
DAP2_SCLK
DAP2_FS
AUDI
O_I
2C_
SD
AUDI
O_I
2C_
SC
L
Star Tablet : Audio