Schematic Diagrams
AUDIO (ALC655) & MDC B - 27
B.Sch
em
atic D
iag
rams
AUDIO (ALC655) & MDC
+3V
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_5VS
+3V
+5VS
+5VS
AUD_VDD
AUD_VDD
+VDD5
+12V
AUD_VDD
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_VDD
AUD_VDD
AUD_AGND
AUD_VDD
AUD_VDD
AUD_AGND
AUD_AGND
AUD_AGND
AUD_VDD
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
AUD_AGND
MIC1-VREFO-L 16
MIC1-L 16
H8_BEEP 33
AC_SPKR 13
INT_CD_L 35
PCMSPK 20
AC97-SYNC 13
AC97-RESET# 13
CD_GND 35
INT_CD_R 35
FRONT-L
16,27
FRONT-R
16,27
AUD_VDD 16,27
+3VS 2,4,8,9,10,11,12,13,14,16,18,19,22,23,24,25,28,29,32,33,35,36
+5VS 8,11,14,16,19,22,23,28,29,30,33,34,35,36
+3V 4,9,10,11,13,14,17,18,19,20,21,22,23,24,29,32,33
+12V 8,20,21,23,28,29,30,32
AC97-SDIN1
13
AC97-SDOUT 13
SPDIF1
16
ICHPWROK
16,24,28,33
+VDD5 9,13,16,19,23,29,30,32,34,36
LINE_R 16,19
LINE_L 16,19
MONO-OUT
28
PRE_LOUT
27
PRE_ROUT
27
PRE_LOUT
27
PRE_ROUT
27
AC97_CLK
13
SEL
16,28
EAPD
22
H8_MUTE 22
AUDIO_R 19
AUDIO_L 19
AC97-BCLK 13
AC97-SDIN0 13
AC97-BCLK 13
Z2642
AC97-SYNC
AC97-SDOUT
AC97-SDIN1
Z2630
Z2628
AC97-RESET#
Z2629
Z2605
Z2653
Z2
61
2
INT_CD_L
Z2627
MIC1-VREFO-L
Z2
62
6
CD_GND
INT_CD_R
Z2616
Z2617
MIC1-L
Z2
6
07
Z2
62
4
Z2
62
5
Z2
60
6
Z2618
Z2
6
10
Z2615
Z2
60
9
Z2
61
1
Z2603
Z2613
Z2614
LINE_R
LINE_L
RO-_R
LO-_R
LO+_R
RO+_R
Z2666
AC97-BCLK
Z2665
Z2668
Z2632
Z2622
Z2621
Z2619
Z2620
RO-
LO-
RO+
LO+
Z2643
Z2654
BEEP
Z2604
Z2669
Z2636
Z2637
Z2638
Z2639
Z2645
Z2644
Z2640
SEL
Z2633
Z2635
Z2634
Z2601
Z2647
Z2646
Z2641
Z2660
Z2659
Z2651
Z2662
Z2649
Z2648
Z2661
SEL
Z2658
Z2670
Z2650
Z2656
Z2652
Z2681
Z2664
Z2655
Z2663
Z2
6
08
Z2672
AUD_VDD
Z2677
Z2679
Z2678
SEL
Z2657
Z2675
Z2680
Z2
60
2
AUDIO_R
AUDIO_L
BTL
BTL
C65
*0.1U
L67
L_0805(1 59)
C248
270P
C24
3
6.
8
P
R524
*20K
T335
JMDC1
AMP/CON12
1
2
3
4
5
6
7
8
9
10
11
12
C191
1U
C625
0.1U
R549
*0
C626
0.1U
C295
*4.7U_0805
C826
1U
C620
1U
T
R266
*1M
C192
*1U
C873
1000P
C227
68P
C830
0.1U
C247
0.1U
C618
*1U
R224
*20K
C589
1U
R225
20K
U18
ALC655
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
DV
D
D
1
GP
IO
0
GP
IO
1
D
V
SS1
SD
A
T
A-
O
U
T
BI
T
-C
L
K
D
V
SS2
SD
A
T
A
-I
N
DV
D
D
2
SYN
C
R
E
SET
#
PC
BEEP
Sense A
LINE2-L
LINE2-R
MIC2-L
MIC2-R
CD-L
CD-GND
CD-R
MIC1-L
MIC1-R
LINE1-L
LINE1-R
AVD
D
1
AVS
S
1
VR
EF
M
IC
1
-V
R
E
F
O
-L
L
IN
E
1-
VR
EF
O
-L
MI
C
2
-V
R
E
F
O
L
IN
E
2-
VR
EF
O
M
IC
1-V
R
E
F
O
-R
DCV
O
L
Se
ns
e B
FR
O
N
T-
L
FR
O
N
T-
R
LINE1-VREFO-R
AVDD2
SURR-L
JDREF/NC
SURR-R
AVSS2
CEN
LFE
SIDESURR-L
SIDESURR-R
SPDIFI/EAPD
SPDIFO
C185
0.1U
L66
L_0805(159)
CP7
8P4CX180PF(M)
1 2
3
4
5
6
7
8
C602
1U
T181
R226 20K
R779
*0
L16
8P4LX120(173)
1
2
3
4
5
6
7
8
T284
T281
U17
TPA2020A
18
21
7
22
20
15
19
3
10
11
14
1
16
9
8
6
5
4
2
17
23
12
13
24
25 26
27
28
29
30 31
32
33
RVdd
RLINEIN
LVdd
ROUT+
RHPIN
ROUT-
RBYPASS
LOUT+
LOUT-
MUTE IN
SE/BTL
G
N
D/HS
HP/LINE
MUTE OUT
SHUTDOWN
LBYPASS
LHPIN
LLINEIN
TJ
NC
NC
GN
D
/H
S
GN
D
/H
S
GN
D
/H
S
TH
R
E
M
/G
N
D
T
HRE
M
/G
N
D
T
HRE
M
/G
N
D
T
HRE
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
T
HRE
M
/G
N
D
T
HRE
M
/G
N
D
R554
10K_1%
C221
0.1U
C606
1U
R553
10K_1%
R550
*0
T451
T259
T257
R271
11.5K_1%
C184
0.1U
C612
100P
+
C611
10U_0805
C609
4.7U_0805
C258
10U_10V_1206
L15
L_0603(164)
C592
1U
Y 3
*24.576MHz
1
2
S1
SHORT
2
1
C251
270P
C623
2.2U_16V_0805
C183
0.1U
C828
*1U_X7R
T256
D67
RB751V
A
C
Q53
2N7002
G
S
D
C600
1U
T258
C252 0.1U
+
C617
10U_0805
C274
10U_10V_1206
C182
0.1U
C261 0.1U
C610
4.7U_0805
R545
22
+
C622
10U_0805
C66
0.1U
C189
1U
C266
0.1U
C872
1000P
JSPK3
ACES/CON4
1
2
3
4
1
2
3
4
R541
*1K
R532 10K
C260
0.1U
L65
8P4LX120(173)
1
2
3
4
5
6
7
8
R552
11.5K_1%
U16
TPA2020A
18
21
7
22
20
15
19
3
10
11
14
1
16
9
8
6
5
4
2
17
23
12
13
24
25
26
27
28
29 30
31
32
33
RVdd
RLINEIN
LVdd
ROUT+
RHPIN
ROUT-
RBYPASS
LOUT+
LOUT-
MUTE IN
SE/BTL
G
N
D/HS
HP/LINE
MUTE OUT
SHUTDOWN
LBYPASS
LHPIN
LLINEIN
TJ
NC
NC
G
N
D/HS
G
N
D/HS
GN
D
/H
S
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
TH
R
E
M
/G
N
D
C188
1U
C207 0.1U
C178
1U
T452
JSPK1
ACES/CON4
1
2
3
4
1
2
3
4
T282
C621
1U
Q47
4800
4
6
2
5
7
3
1
8
C242
0.1U
C246
*22P
1
2
R252
22
T283
C187
1U
C212 0.1U
R50
0
T450
C250
0.1U
R221
20K
R223
20K
C232
*22P
1
2
C214
1U
T279
C2
45
6.
8
P
C255
0.1U
R269
0
U37
TC7S32F
1
2
3
5
4
IN
IN
GND
VCC
OUT
R222
*20K
C607
0.1U
Q51
2N7002
G
S
D
L37
L_1206(162)
1
2
C190
1U
C595
*1U_X7R
R327
100K
T280
C593
*1U_X7R
C827
1U
C193
*1U
C594
1U
C202
0.1U
C624
2.2U_16V_0805
R314
1M
C249
0.1U
CP6
8P4CX180PF(M)
1
2
3
4
5
6 7
8
+
C615
10U_0805
T180
C619
1U
R525
*20K
C228
0.1U
T
C829
*1U_X7R
C244
0.1U
Spilt by DGND
REMOVE M/E POSITION
FRONT
MDC MODEM
20-C2D00-206
20-43100-104
R-A/M 1.25mm
For ALC650
SURROUND
20-43100-104
Layout Trace? ? ?
12~13mil
AGND
AGND
5 / 2 0 C h a n g e
D e l R 2 4 6 ( 1 0 K )
PIN 32,34 INT PU.
E n h a n c e M I C
Q u a l i t y .
5 / 2 0 C h a n g e
D e l C 6 1 8
5 / 2 0 C h a n g e
5 / 2 0 C h a n g e
2005/11/16
Vcc Power trace >= 60mil
PLEASE PLACE CLOSE CODEC &
AMP THE POWER INPUT PINS
24.576MHz
94/7/25
chan ge to Audio_GND
Rubband
94/7/25
chan ge to A udio _GND
Ru bband
94/7/25
change to A udio_GND
Rub band
Change Net Name
Bryant
Bryant
Change Net Name
Bryant
Change Net Name
Bryant
Change Net Name
Remove parts
Bryant
R-A/M 1.25mm
9/29
Bryant
Brya nt
Brya nt
94/9/14
Rubband
94/9/16
Bryant
94/9/14
Re move
R551
Rubband
Del R781,R268,R798
Bryant
Del R797,R270,R780
Del
R381,C348,U24,R820
94/9/26
Rubb and
94/9/28
de l R541
Rubb and
Bryant
9/29
Bryant
Tied at one point only under the
codec or near the codec
Bryant
Bryant
Brya nt
94/11/16 Kev in
94/11/16 Kevin
94/11/16 Kevin
DEL R74
DEL R267
Bryant
Bryant
2005/11/16
Del R77
2005/11/16
Bry ant
Del PR1
Sheet 27 of 45
AUDIO (ALC655) &
MDC