LG U990 Service Manual page 69

3. TECHNICAL BRIEF
R510
C532 1u
SPK_R
1K
C535
FM_AUDIO_R
C536
FM_AUDIO_L
C541 1u
R516
SPK_L
1K
C548 1u
HP_L
C549 1u
HP_R
CN500
21
19
1 FB504
2
3
4
5
6
7
LGE Internal Use Only
MIDI_3.3V
C518 C519
4.7u 0.1u
MMP_A_LRCLK
MMP_A_BCLK
C530 MMP_ADI_ADCDAT
12n MMP_ADO_DACDAT
MMP_A_MCLK
C533
R511
4.7n 18K
1u
1u
C542
MID_MICP
R517
4.7n 18K
C547
12n
CODEC_I2C_SCL
CODEC_I2C_SDA
C550 C551
NA NA
AUDIO DAC/ADC, AMP etc. (WM8983)
L504
2.2uH
Figure . Audio part schematics
VREG_5V
R533
C514 C513 VREG_WM_2.7V
10u
0.1u 0
C516 C517
4.7u 0.1u
VREG_MSME_1.8V
C520 C521
4.7u 0.1u
U502 WM8983
13
DCVDD DGND
14
DBVDD
26
AVDD2 AGND1
31
AVDD1
AGND2
7
LRC
8
BCLK
9
ADCDAT
10
DACDAT VMID
11
MCLK
MICBIAS
4
RIP
5
RIN ROUT1
LOUT1
6
R2_GPIO3
3
L2_GPIO2 ROUT2
1
LIP LOUT2
2
LIN
19
AUXL OUT3
OUT4
20
AUXR
MODE
15
CSB_GPIO1
16
SCLK
17
SDIN PGND
VREG_MSMP_2.7V
Copyright © 2007 LG Electronics. Inc. All right reserved.
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12
28
24
C525
C524
10u
0.1u
C531
27
NA
32
29
HP_EAR_R
30
HP_EAR_L
FB500
23
SPK_OUT+
25
SPK_OUT-
FB501
C543 C544
22
MIC2P NA NA
21
18
33
FM_ANT
EAR_MIC_P
TV_OUT
MIDI_EAR_L
MIDI_EAR_R
RMT_INT-USB_D+
Only for training and service purposes
MIC_PWR