Service manual

Schematic Diagrams
B - 36 AUDIO CODEC VT1802S
B.Schematic Diagrams
AUDIO CODEC VT1802S
C482
100p_50V_NPO_04
PCBEEP
2
J_SPK1
1
C464
*1u_6.3V_X5R_04
C465
*1u_6.3V_X5R_04
3.3VS3,6,9,10,11,12,19,20,21,22,23,24,26,27,28,29,30,31,32,33,34,36,37,41
5VS12,19,20,30,33,34,35, 37,41,42
C466 10u_6.3V_X5R_06
Close to PCH
Layout Note:
C665
100p_50V_NPO_04
R539 1K_04
C458
0.1u_16V_Y5V_04
HP_SENSE 33
MIC _SEN SE 3 3
BEEP36
HD A_SPKR20
L41
*HCB1005KF-121T20
C487 100p_50V_NPO_04
C441 10u_6.3V_X5R_06
R288 5.1K_1%_04
INT_MIC_OUT
DIGITAL
ANALOG
U18
VT1802S
DVDD1
1
GPIO0-DMIC-DAT
2
GPIO1-DMIC-CLK
3
PD#
4
SDATA-OUT
5
BIT-CLK
6
DVSS2
7
SDATA-IN
8
DVDD-IO
9
SYNC
10
RESET#
11
PCBEEP
12
Sense A
13
LINE2-L
14
LINE2-R
15
MI C 2- L
16
MI C 2- R
17
Sense-B
18
JDREF
19
MON O-OU T
20
MI C 1- L
21
MI C 1- R
22
LINE1-L
23
LINE1-R
24
AVSS1
26
VREF
27
LDO_CAP
28
MIC2-VREFO
29
MIC 1-VR EF O-R
30
MIC1-VREFO-L
31
HP-OUT-L
32
AVSS2
37
OPVEE
34
CBN
35
CBP
36
HP-OUT-R
33
PVDD1
39
SPK-L+
40
SPK-L-
41
PVSS1
42
PVSS2
43
SPK-R+
45
SPK-R-
44
PVDD2
46
SPDIFC2/EAPD
47
SPDIFO
48
AVDD2
38
AVDD1
25
GND
49
C469
*180p_50V_NPO_04
INT_MIC
MIC2-VREFO
MI C 2_ R
MI C 2_ L
HDA_RST#R
C472 10u_6.3V_X5R_06
AZ_SDOUT_R
R291
*15mil_short_06
AZ_SYNC _R
AZ_SDIN0_R
BEEP_R
LDO_CAP
SPKOUTL-
MIC1-VREFO-R
SPKOUTL+
MIC2-VREFO
OPVEE-ALC269
CBN-AL269
CBP-ALC269
MIC1-R_R
MIC1-L_R
C456
*10u_6.3V_X5R_06
SPKOUTL+_L
SPKOUTR+
SPKOUTR-
SPKOUTL+
SPKOUTL-_L
C668
10u_6.3V_X5R_06
SPKOUTL-
SPKOUTR-_R
SPKOUTR+
MI C 1_ L
SPKOUTR-
SPKOUTR+_R
R540
3.3K_1%_04
MI C 1_ R
R310 4.7K_04
C442 10u_6.3V_X5R_06
C641 22p_50V_NPO_04
C438
*1u_6.3V_Y5V_04
R290 20K_1%_04
MIC1_L
MIC1_R
R275 75_04
MIC1-VREFO-R
MIC1-VREFO-L
R268 75_04
L44 HCB1005KF-121T20
C470
*180p_50V_NPO_04
R309 47K_04
C672
0.1u_16V_Y5V_04
C462
180p_50V_NPO_04
C457 10u_6.3V_X5R_06
C483 1u_6.3V_X5R_04
R289 39.2K_1%_04
INT_MIC
C447 0.1u_16V_Y5V_04
C468
180p_50V_NPO_04
BEEP_L
C681
0.1u_16V_Y 5V_04
C683
10u_6.3V_X5R_06
MI C 1- VR E FO -L
NEAR CODEC
KBC_MUTE#36
Speaker 4 ohm------> 40mils
Speaker 8 ohm------> 20mils
EMI Require
EMI Require
Layout note:
Close to codec
ANALOG
HDA_SDIN020
DIGITAL
C476
0.1u_16V_Y5V_04
C475
10u_6.3V_X5R_06
AZ_RST#
Thermal Pad place 9
Via hole.
GND and AUDG space is
60mils ~ 100mils
Speaker wire length less than 8000mils , It don't need LC Filter.
5VS
Layout note:
20ms
PD#
3.3VS_AUD
SPKOUTR+,R-,L+,L- Trace width
HEAD PHONE-R 33
HEAD PHONE-L 33
5VS
5VS_AUD 5VS
SPKOUTR-_R 33
R319
*10K_04
SPKOUTR+_R 33
VT1802P ±µAUDG
MI C 1- L 33
MI C 1- R 3 3
EAPD_MODE
ALC269 ±µGND
3.3V
VREF-ALC269
SENSE_A
AZ_RST# For 3.3V
HDA Link De-pop
PD# Control
HDA_RST#R
EAPD_MODE
C684
10u_6.3V_X5R_06
HDA_RST#
L50
HCB1005KF-121T20
C485
0.1u_16V_Y5V_04
C682
0.1u_16V_Y5V_04
3.3VS_AUD
3.3VS 3.3VS_AUD
AUDG
R299
10K_04
C478 *100p_50V_NPO_04
AUDG
VT1802S L52,C689 ¤£¤W¥ó
ALC269 L52,C689 -n¤W¥ó
C460 *100p_50V_NPO_04
VT1802S 5.1K_1%_04
JDREF
C440 *10u_6.3V_X5R_06
VT1802S 10u
R298
100K_04
VT1802S NC PIN
3.3VS_AU D
VT1802S
100P
VT1802S
3.3K_04
HDA_BI TCLK20
HDA_RST#20,36
C481 0.1u_16V_Y5V_04
AUDG
C437 0.1u_16V_Y5V_04
PVDD1_2
R558 0_04
C679
*0.1u_16V_Y5V_04
C680
*10u_6.3V_X5R_06
CODEC (VT1802S)
R301 1M_04
VT1802S 3.3K_1%_04
VT1802S 75_1%_05
HDA_SYNC20
HDA_SDOUT20
D12 RB751S-40C2
AC
FOR VOLUMN ADJUST
D14 RB751S-40C2
AC
RN18
22_8P4R_04
8 1
7 2
6
5
3
4
AZ_BITCLK_R
3.3VS_AUD
R277 3.3K_1%_04
R276 3.3K_1%_04
VT1802S 10u
5VS
R557 *0_04
PC BEEP
VT1802S 10u
Layout Note:
Very close to
Audio Codec
R300 33_04
Please Let LC Filter
together and close to
Codec.IF Speaker
wire length is less
than 8000mils It don't
need the LC Filter.
C
A
A
D15
BAT54CS3
1
2
3
L47 FCM1608K-121T06
L46 FCM1608K-121T06
AUDG
AUDG
AUDG
AUDG
AUDG
AUDG
INT_MIC_OUT 30
5VS12,19,20,30,33,34,35, 37,41,42
J_SPKL1
85204-02001
1
2
NC2
NC1
C446
2.2u_6.3V_X5R_04
C445 2.2u_6.3V_X5R_04
JP3 *10mil_short
JP2 *10mil_short
3.3V2,3,12,17,20,24,25,27,28,29,31,33,37,38,40,42
L48
0_06
L49
0_06
D13 *RB751S-40C2
AC
Q10
MTN7002ZHS3
G
D S
Sheet 35 of 46
AUDIO CODEC
VT1802S