LG CU920 - Page 167

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6. BLOCK DIAGRAM
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
RED : GPIO
MSM6281
AMP
TPA2005D
SPK_A MP_EN
AMP_N
AMP_
P
Lo
Lo
ud
ud
S
S
PEAKER
18x
18x
13
13
,3.
3.
6T
6T
8ohm,
8ohm,
0.
0.
8W
8W
EAR
EAR
JA
JA
CK
CK
(18
18
pin
pin
MMI)
MI
MI
C
6.
6.
15
15
x3.16,
16,
1.25T
-42dB
-42dB
+/ -3dB
-3dB
AMP_SPK+
AMP_SP
K-
HPL_L
HPL_R
TTY_ADC_D
ET
MIC2P
MIC1P
MIC1N
MICBIAS
RCV+
RCV-
EAR_SENSE_N
NLAS5223B
(Analog
Switch
)
SPK+
SPK+
SPK-
SPK-
SPK_SW_ON
Audio Block Diagram