Service manual

Schematic Diagrams
B - 28 Audio Codec VIA1812
B.Schematic Diagrams
Audio Codec VIA1812
Sheet 27 of 42
Audio Codec
VIA1812
C260 0.1u_10V_X7R_04
HD A_SY NC14 , 2 9
MIC1-L30
BEEP
HDA_RST#14, 29
MIC 1 -R30
C467 0.1u_16V_Y5V_04
HD A_S PKR14
C466 0.1u_16V_Y5V_04
PC BEEP
C257 0.1u_16V_Y5V_04
C426 0.1u_16V_Y5V_04
R345 22_1%_04
R341 22_1%_04
R334 22_1%_04
R333 22_1%_04
EAPD _ MOD E
R78
2.21K_1% _04
R330 22_1%_04
R 332 4.7K_04
C122
330p_50V _X7R_04
AZ_ BITCLK_R
AZ_SD OUT_R
AZ _ SY NC_ R
IN T_ M IC
FR ONT-R
FR ONT-L
AZ_SD IN0_R
AZ_R ST#_R
FOR EMI
Co de c pin 1 ~ p in 11 a nd pi n 44 ~ pi n 4 8
ar e Di git al s ig nal s.
Th e ot her s ar e Ana lo g sig na ls .
AMP (N7010)
FR ON T-R
FR ON T-L
L ayo ut N ot e:
PC H_MU TE#19
AU DG
IN T_ M IC_ R
C456 2.2u_16V_X5R_06
MIC2_L
MIC2_R
Ver y cl ose t o Aud io C ode c
C242 * 0.1u_16V_Y5V_04
C258 * 0.1u_16V_Y5V_04
C259 * 0.1u_16V_Y5V_04
MIC 1_ L
MIC 2_ R
C253 * 0.1u_16V_Y5V_04
MIC 2_ L
MIC 1_ R
La you t No te :
ALC_GPIO 0
NEAR CODEC
AUD G
R191 5.1K_1%_04
AUDG
C452 2.2u_16V_X5R_06
Gain Settings
GAIN0 GAIN1 AV(inv) INPUT IMPEDANCE
0 0 6 dB 90 k
0 1 10 dB 70 k
1 0 15.6 dB 45 k
1 1 21.6 dB 25 k
DIGITAL
ANALOG
U24
VT1812
DVDD
1
G PIO0 /D MIC -DATA1 /2
2
G PIO1 /D MIC -DATA3 /4
3
DVSS1
4
S DATA-OU T
5
BIT-CLK
6
D VSS2
7
S DATA-IN
8
DV DD-IO
9
SYNC
10
R ESET#
11
P CBEEP-IN
12
S ense A(JD 1)
13
LIN E2- L
14
LIN E2- R
15
MIC2-L
16
MIC2-R
17
LIN E1- VREFO
18
MIC2-VREFO
19
LIN E2- VREFO
20
MIC1-L
21
MIC1-R
22
LIN E1- L
23
LI N E 1 - R
24
AVSS1
26
VREF
27
MIC1-VR EFO
28
CBP
29
CBN
30
C PVEE
31
HPO UT-R
32
HPOUT-L
33
S ense B(JD 2)
34
LO UT1- L
35
LO U T 1 - R
36
MO N O -OU T
37
LO UT2- L
39
JD REF
40
LO U T 2 - R
41
AV SS2
42
NC
43
D MIC -CLK3/4
44
SPDIFO2
45
D MIC -CLK1/2
46
E APD
47
SPDIFO1
48
AVDD 2
38
AV DD1
25
AU DG
C448 10u_6.3V_X5R _06
SPKO UTL+
SPKO UTL-
C433
0.1u_16V_Y 5V_04
.
L23 HC B1608KF-121T25
C439
10u_6.3V_X5R _06
C4 2 8
*0.1u_10V_X7R _04
C284
* 1u_6.3V_X5R_04
R3 24
C465
10u_6.3V_X5R _06
5VS_ AU D
C281
0.1u_16V_Y 5V_04
La you t No te :
Ver y cl ose t o Aud io C ode c
R353 10K_04
AUD G
AUD G
R356 10K_04
AUD G
R182 20K_1%_04
M IC2 -VREF O
R352 5.1K_1%_04
C437 0.1u_16V_Y5V_04
PCBEE P_C
R324 5.1K_1%_04
C429 100p_50V_NPO_04
C430 1u_6.3V_X5R_04 PC BEEP_ RR323 10K_04BEEP
AUD G
R 1 7 8 1K _1 % _ 04
10/16 change
footprinter
LI N -
RIN -
GAIN 0
C431
10u_6.3V_X5R_06
C442
*1u_6.3V_X5R _04
R189 100K_1%_04
R1 97 * 1 00 K_ 1 %_ 0 4
R3 40 * 1 00 K_ 1 %_ 0 4
R346 100K_1%_04
L34
HC B1005KF-121T20
Thermal Pad
U22
N7010
SD #
19
RI N-
17
LIN-
5
BYP ASS
10
GN D
11
GA IN0
2
RO UT-
14
LO UT-
8
PVDD
6
LO U T +
4
GN D
20
GA IN1
3
RO UT+
18
PVDD
15
EXPOSE D PAD
21
LIN+
9
GN D
1
GN D
13
NC
12
VDD
16
RI N+
7
AU DG
AU DG
C4 45
*10u_6.3V_X5R_06
5VS_ REAR
AUD G
5VS
5VS
AUD G
AU DG
LI N +
AUD G
AUD G
RIN +
GAIN 1
SPK_EN
AMP_BYP ASS
C462 0.1u_10V_X7R_04
C434
*0.1u_10V_X7R _04
U2 3
MC74VHC 1G08DFT1G
1
2
5
4
3
3.3VS
SPK_EN
Low mute!
KBC _M UTE#28
.
L20 FCM1005KF -121T03
C273
180p_50V_NPO _04
.
L22 FCM1005KF -121T03
SPKOU TL-_R
C265
180p_50V_N PO_04
F OR EM I
SPKOU TL+_ R
2 1
J_SPK1
L24
* 10mil_short _04
HEAD PHO NE-R 30
HEAD PHO NE-L 30
M IC2 -VRE FO
C262
0.1u_16V_Y 5V_04
C282
10u_6.3V_X5R_06
C283
0.1u_16V_Y5V_04
C278
0.1u_16V _Y 5V _04
3.3VS_AU D
3.3VS
.
L2 1 H C B 1 60 8 K F - 1 21 T 2 5
1
SPKO UTR- 3 0
SPKO UTR+ 3 0
J_INTMIC1
2
R183 75_1%_04
R179 75_1%_04
MIC1_L
MIC1_R
MIC1 -V R E F O-R
CODEC (VIA1812 )
JD 2
JD 1
ALC_GPIO 1
HP_SENSE30
HP_SEN SE
MIC _S E N S E
M IC_SENSE30
A UDG
INT_ MIC
HD A_ S DIN 014
HDA _BITC LK14 , 2 9
C254 0.1u_10V_X7R_04
C458 0.1u_10V_X7R_04
EAPD_M ODE
R1 91 V IA 181 2 5. 1K _1 %_ 04
A LC 272 20 K_ 1% _0 4
C 446 22p_50V_NP O_04
C275 * 0.1u_16V_Y5V_04
C245 * 0.1u_16V_Y5V_04
La yo ut No te :
Ve ry cl os e t o Au dio C od ec
C2 4 9
0.1u_16V_Y 5V_04
5V 21,24,30,31,33,34
5VS 2,13,17,20,21,26,30,31,35,36
3.3VS 2,10,11,12,13,14,15,16,17,18,19,20,21,23,24,25,26,28,29,30,31,35,36
1.5V
C 252 *100p_50V_N PO_04
3.3V 3,4,12,14, 15,16, 18,19,20,21,23,24,25,29,30,31,33,34,35
C 279 *100p_50V_N PO_04
MIC1-R
C435
680p_50V_X7R _04
AUD G
R335 *10mil_short_04 EAPD_M ODE_R
N7010 6-02-07010-AL0
APA2031RI-TRG 6-02-02031-AL1
C269 *22p_50V_N PO_04
D22 *C DBU 00340
AC
A
A
C
D2 0
BAT54 CS3
1
2
3
C263 *22p_50V_N PO_04
R 342 * 15m il_short_06
C267 *100p_50V_N PO_04
C427
4.7u_6.3V_X5R_06
J_ I N T M I C 1
88266-02001
PCB Footpr int = 8 82 66- 2L
1
2
C247 1u_6.3V_X5R_04
C246 1u_6.3V_X5R_04
C441 * 0.1u_16V_Y 5V_04
A
A
C
D23
B AT54AS3
1
2
3
ALC_VREF
C4 3 6
680p_50V_X7R _04
AU DG
KBC_BEEP28
C243 1u_6.3V_X5R_04
C251 1u_6.3V_X5R_04
MIC 1_ R _C
MIC 1_L_C
3. 3V VI A1 81 2 10 K
1. 5V VI A1 81 2 5. 1K
ALC272 1K
M IC1 -VREFO
MIC 1 -R
C 440 22p_50V_NP O_04
MIC 1 -L
J _SPKL1
85 2 0 4- 0 2 0 01
P C B F o ot pr i n t = 85 2 0 4- 0 2 R
1
2
JDR EF
L36 *15mil_short_06
1.5V 4,9,10,11, 21,23, 29,31,33,36
R331 4.7K_04 MIC1-LMIC1 -V R E F O-L
N ear M IC co nn ec t
Layout Note:
R327
100K _1%_04
HDA_SDOUT14 , 2 9
C454 22p_50V_N PO_04
5VS