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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
AIT716
Main Speaker is the output device for all acoustic functions, which are speakerphone, MIDI ringtone, FM radio,
Music play and etc. The speaker is driven by audio amplifier(U201).
Figure 3.10 Connection between Speaker, Amp and AD6726 & AIT716
AD6726
3.10 Main Speaker
NC3
E
1
NC4
V
2
NC5
NC6
W
1
M16
AIN3C
AIN3R
N16
AOUT1N
AOUT1P
N17
T15
AOUT2N1
U15
AOUT2N2
T14
AOUT2P1
AOUT2P2
U14
AOUT3L
M17
N15
AOUT3R
47p
39p
C151
C154
C156
39p
C150
0.1u
47p
C152
39p
C155
C153
39p
AUXOP_R
AUXOP_L
ABB_P
ABB_N
REC_P
REC_N
AUDIO AMP
EUSY0360201
VBAT
C212
1u
C217
1u
C209
1u
56p
C223
C224
56p
C210
1u
C229
1u
1u
C211
1u
C220
1u
C202
C203
1u
C206
C222
1u
1u
PVDD
RXIN+
D4
B4
RXIN-
SCL
C3
SDA
B3
B1
VDD
A3
VSS
B2
BIAS
C1N
A4
C1P
A5
D3
GND
HPL
A2
HPR
A1
INA1
D2
INA2
D1
C2
INB1
C1
INB2
OUT+
D5
B5
OUT-
C4
PGND
C5
MAX9877AEWP_TG45
U201
1u
C201
1u
C216
SPK_N
SPK_P
FM_R
MM_R
I2C_SCL
I2C_SDA
HS_OUT_L
HS_OUT_R
ABB_N
ABB_P
AUXOP_L
AUXOP_R
MM_L
FM_L
AIT_UART_RX
AIT_UART_TX
Single-end strero MIC Input(AIT)
R403
DNI
PVIN_P
H9
PVREF_N
PVREF_P
H8
C
D_A0
C
D_RD_
A3
PUSBDN
PUSBDP
A2
PVIN_N
H10
G10
C
D1_CS_
C
D2_CS_
PGPIO9
PGPIO10
B9
PGPIO11
B10
PGPIO12
B7
A10
PGPIO13
A7
PGPIO14
PGPIO15
A9
NC2
G9
10u
C417
C415
0.1uF
0.1uF
C416
DNI
R404
R405
12K
MM_MICP
FM_R
FM_L
MM_R
MM_L
MM_USBDM
MM_USBDP
SPEAKER
C336
39p
39p
C335
R308
0
ICVN0505X150FR
VA
3
0
3
39p
C329
0
R311
SUSY0024801
EMS1634APB1P
CN302
1
2
ICVN0505X150FR
VA
3
0
4
SPK_P
SPK_N
AIT716
AD6726