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Schematic Diagrams
Audio Codec ALC201A (71-M4000-D03) B - 27
B.Schematic Diagrams
Audio Codec ALC201A
Sheet 26 of 41
Audio Codec
ALC201A
VDDA
+3VS
AGND
+5VS
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND AGND
AGND
AGND
+5VS
VDDA 12V
AGND
AGND
OPVCC
OPVCC
AGND
VDDA
VDDA
AGND
AGND
AGND
AGND
AGND
AGND
AGND AGND
AGND
AGND AGND AGND
AC_RST#15,20
AC_BCLK15,20
AC_SYNC15,20
AC_SDOUT15,20
AC_SDIN015
PHONE20
CD-L14
CD-R14
MIC127
CDGND14
Vrefout 27
SPDIF 27
R_OUT+ 27
L_OUT+27
HP_SENSE27
AC_SDIN115,20
PWRGD 9,15,29
LINE-R17
LINE-L17
LBP29
AC_SYNC
AC_SDIN0
AC_SDOUT
LOUT-R
AC_BCLK
CDGND
SPDIF
LOUT-L
AC_RST#
Vrefout
LOUT-L
MUTEOUT
R_OUT-
LOUT-R
AC_BCLK
AC_SDIN0
AC_SDIN1
AC_BCLK
R_OUT+
L_OUT+
MIC1
CD-L
CD-R
PHONE
AMP_MUTE
AMP_MUTE
PWRGD
L_OUT-
MUTE
HP_SENSE
LOUT-R
LOUT-L
HP_SENSE
MUTE
LBP
C613
10UF/10V
T
C639 10UF/10V
R500
10K
U34
TPA0202
1
12
13
24
2
17
23
7
18
6 19
9
11
14
16
8
10
3
15
22
5
4
20
21
GND/HS
GND/HS
GND/HS
GND/HS
NC
NC
NC
VDD
VDD
L_BYPASS R_BYPASS
MUTE OUT
MUTE IN
SE/BTL#
HP/LINE#
SHUTDOWN
L_OUT-
L_OUT+
R_OUT-
R_OUT+
L_HP IN
L_LINE IN
R_HP IN
R_LINE IN
C609
0.01UF
C624
0.01UF
C669
4.7U(0805)
C605
0.01UF
C657
4.7U(0805)
R486
0(R)
R480 47
U1878L05(SO8)(R)
1 8
2
3
6
7
4
OUT IN
GND
GND1
GND2
GND3
T
R481 47
C611
0.01UF
C671
4.7U(0805)
JSPK1
CON2
1
2
JSPK2
CON2
1
2
C638
10UF/10V
C640
0.1UF
C665
0.1UF
R485 4.7K(R)
T
C603
47P
L99
FCM2012V121
0.47UC653
C672
0.1UF(R)
C678
10UF/10V
R430 10K
C663
10UF/10V
R478 10K
C668 0.22U
C633
1UF
C656 0.22U
C664
4.7U(0805)
C661
0.1UF
C666
220P
C670
0.1UF
L97
BK3216HS800
C614
22P
C660
0.1UF
R499
1K
R479 10K(R)
C641
1000P
C630
0.01UF
L96
FCM1608K-121
Q3
2N7002
GS
D
C607
0.01UF
R492 0
D29
ISS355
AC
R488 0
C647
1UF
1M(R)
R482
R487 4.7K
C616
0.1UF
R494
4.7K
C628 1UF
C622
1UF
C649
1000P
R484
4.7K
C637
0.1UF
C635
0.1UF
C606 1UF
C610
1UF
Y8
24.576MHz
C642
0
C648 1UF
R497
15K
C634
1UF
R501
15K
T
R493 4.7K
0C643
C604
1UF
C615
22P
R502 10K
C636 1UF
R498 10K
R476 10K
C655 0.22U
R477 10K
C667 0.22U
C629
0.01UF
L129 FCM1608K-121
L127 FCM1608K-121
T
T
T
T
C654
220P
C631 1UF
L138 FCM1608K-121
JSPK3
CON2S
1
2
JSPK4
CON2S
1
2
C659
4.7U(0805)
L98
FCM2012V121
C658
0.1UF
L130 FCM1608K-121
L128 FCM1608K-121
JSPK5
CON2
1
2
R718 20K
R716 49.9K
L137 FCM1608K-121
L139 FCM1608K-121
L136 FCM1608K-121
C843
0.1UF
R719 20K
R715 20K
C844
0.1UF
C837 1UF
C842
1UF
C841 1UF
R714 20K
C839 3300P
R717 20K
C838 1UF
R720 20K
C840 1UF
R741 100
R742 0
C621
0.1UF
C612
1UF
U33
ALC201A
1
9
25
38
4
7
26
42
2
3
5
6
8
10
11
12
13
14
15
16
17
18
20
19
21
22
23
24
27
28
29
30
31
32
33
34
35
36
37
39
40
41
43
44
45
46
47
48
VDD
VDD
AVDD
AVDD
VSS
VSS
AVSS
NC
XTL-IN
XTL-OUT
SDATA-OUT
BIT-CLK
SDATA-IN
SYNC
RESET#
PC-BEEP
PHONE
AUX-L
AUX-R
VIDEO-L
VIDEO-R
CD-L
CD-R
CD-GND
MIC1
MIC2
LINE-L
LINE-R
VREF
VREFOUT
AFILT1
AFILT2
VRAD
VRDA
CAP1
NC
LINE-OUTL
LINE-OUTR
MONO-OUT
HP-OUT-L
AVSS
HP-OUT-R
AVDD
AVSS
ID0#
ID1#
JD
SPDIFO
C623
0.1UF
R722 10K(R)
C846
4.7U(0805)
U47
APA4835
14
8
2 7
10
21
3
16
11
17
15
28
26
19
1825
24
5
4
13
12
9
27
6
1
20
23
22
GND
GND
ShutDown DC Vol Control
Right in
HP sense
Gain Sel
Vdd
Beep
-Left Out
+Left Out
+Right Out
-Right Out
L2in
L2finR2fin
R2in
Mute
Mode
Left Dock
Left in
Right Dock
Vdd
Vdd
GND
GND
GND
Bypass
C652
1UF
C651
1UF
C650
1UF
R740 100
C853 1UF
R745 20K
R744 20K
JSPK6
CON2
1
2
C845
0.1uF
R723
10K
T
C854 3300P
R743 49.9K
C855 1UF
For some crystal,
For headphone application,
the bias resistor is needed
AGND:25,26,27,28,29,30,31,32,33
f=1/(2πR3C2)=2KHZ, so C2=1.6n
F