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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
• Battery driven 400 mW differential audio amplifier for driving 8 ohm loudspeaker
• Three gain stages including overdrive for ringing tones
• >90 dB PSRR (4 kHz).
Interfaces
• I2C control interface for device configuration
• PMU is configured in software via registers
• Power-on reset generation
• Interrupt (event) line to indicate status change.
Control Unit
• Device ON/OFF switching
• Over-temperature warning
• System start-up state machine
• Under-voltage shut down with defined system behavior
• Independent LDO switch on
• Software and hardware programmable voltages
• System watchdog timer with on-chip oscillator.
< Fig 7. S-GOLD Radio PMU circuit diagram >
3.4. Power ON/OFF
KS660 Power State : Defined 3cases as follow
Power-ON : Power key detect (SM-Power’s ON port)
Power-ON-charging : Charger detect.
Audio Amplifier
5V2_OID
U
AV
1
V
3_BSUV
5V1_2FRV
2.2u C505
u2.2
7
1
5C
415C
u
1.0
625
C
Fu1.0
B7
VUSB
D12
VVIB
U6
VSSRF9
E3
VSS_AUDIO
VSS_EP
H2
VSS_LDO1
E11
D6
VSS_LDO2
C3
VSS_LDO3
VSS_MAIN_1
L12
L10
VSS_MAIN_2
M10
VSS_MAIN_3
VSS_MAIN_4
J8
VSS_MAIN_5
L8
F3
VSS_MS
VSS_RTC
E18
VSIM
A8
VSSRF1
M2
VSSRF10
V2
VSSRF11
V4
VSSRF12
V5
V6
VSSRF13
W1
VSSRF14
VSSRF2
N2
VSSRF3
N3
VSSRF4
P2
VSSRF5
R2
VSSRF6
T2
VSSRF7
U2
U3
VSSRF8
VDD_MAIN_4
M9
VDD_REF
D7
B3
VDD_RF2PLL
D18
VDD_RTC
VIO
C7
VLED
C10
VMMC
A7
VPLL
A3
A2
VRF1
B4
VRF2
VRF3
B1
VDDCHARGE
A5
T6
VDDDIG
VDDMS
P4
W6
VDDPLL
V19
VDDP_EBU_1
VDDRX
L1
VDDTRX
T3
W4
VDDTX
VDDVCO
W5
V7
VDDXO
M4
VDD_FUSE_FS
VDD_MAIN_1
L11
VDD_MAIN_2
M11
L9
VDD_MAIN_3
VAUDIO
E1
VAUX
D11
E2
VBAT_AUDIO
C6
VBAT_BSW_USB_MMC
E12
VBAT_LDO1
B8
VBAT_LDO2
B2
VBAT_RF13
D5
SENSE_IN1
C4
SENSE_IN2
NC2
A19
W19
NC3
NC1
A1
3
H
0
M
1
M
3J
4
F
0
1
M
4G
2
M
7
M
4
H
3G
8M
4
J
9M
81V
2
D
A
_
U
B
E
3D
A
_
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B
E
7
1
W
4DA_UB
E
5
1
T
4
1
U
5DA_
U
BE
71V
6DA_UB
E
0D
A
_
U
B
E
41R
81W
1
D
A
_
U
B
E
AGND_MS1
K1
K4
AGND_MS2
C8
CHARGE_UC_SCAN_IN1
CH_GATE
C5
CH_SOURCE
A4
325
C
n
0
22
005L
Hn
7
4
2
6
V
2
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OI
V5
8
V
2
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1F
R
V
0
V
2
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CT
R
V
825C
F
u
1.0
C5211u
5
8
V
2_
3
F
R
V
T
A
BV_2S
225C
u1
6
05C
u
1
58V2
_
3FRV
Fu1.0
7
25C
81
5
CF
u
1
.
0
025C
5
8
V
2
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3F
R
V
52
5
C
u1
u
1
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7
4
0V
2
_C
T
R
V
105L
C5162.2u
8V1
_
C
MMV
1
2
0105
R
0
05D
V
1
3
3
R
DK
3
905
C
p
0
0
1
u
1
.
0
2
1
5
C
115C
5V1
_
LLPV
5
8
V
2_
3
F
R
V
2.2u
u
1
0.0
C504
u1
205C
5
V
1_
1
DS
V
58V2_1
F
RV
4.7K
R505
p001
805C
u1
425C
9
1
5
C
p0
0
1
TABV_2S
9V2_TBV
u1
0
.0
3
15C
100K
R504
1u C515
H
n
74
2
0
5L
9
V
2_MISV
0
05
C
u
2.2
u
1
.
0
0
15
C
390K
R502
0.47u
105
C
C503
5
8
V
2_3F
R
V
u1
C507
8V
2_
B
IV
V
1u
8
V
1
_
2DS
V
5
V
1_2F
R
V
5
8
V
2
_3
F
R
V
T
A
B
V
_
2
S
T
A
B
V
_
2
S
G
ATJ
_
SUBV
PVO_
S
UBV_
R
GS
D
I
_T
AB
P
MET_F
R_
2S
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