EUROCOM 48EV Service, Service Manual, Page: 115 / 132

Schematic Diagrams
Audio Codec ALC650 (71-D40U0-D04A) B - 27
B.Sch
em
atic D
iag
rams
Audio Codec ALC650
Sheet 26 of 42
Audio Codec
ALC650
VDDA
+3VS
AGND
VDDA
AGND
AGND
AGND
AGND
AGN
D
AGN
D
AGN
D
AGND
AGND AGND
AGND
AGN
D
AGN
D
OPVCC
OPVCC
AGND
VDDA
AGND
AGND
AGND
VDDA
AGN
D
AGND
AGN
D
VDDA
AGND
VDDA
AGND AGND AGND
AGND
+12V
AC_RST# 15,20
AC_BCLK 15,20
AC_SYNC 15,20
AC_SDOUT 15,20
AC_SDIN0 15
LBP 29
PHONE 20
CD-L 14
CD-R 14
MIC1 27
CDGND 14
Vrefout 27
R_OUT+27
L_OUT+ 27
HP_SENSE27
AC_SDIN1 15,20
SPDIF/LINE-L 27
CLINE-R 17
CLINE-L 17
LFE 27
SPDIF/LINE-R 27
CLINE-L 17
CLINE-R17
CLINE-R 17
CLINE-L 17
LAN_PWRON 15
H8_MUTE24
AC_SYNC
AC_SDIN0
AC_SDOUT
LOUT-R
AC_BCLK
CDGND
LOUT-L
AC_RST#
Vrefout
LOUT-L
MUTEOUT
R_OUT-
LOUT-R
AC_BCLK
AC_SDIN0
AC_SDIN1
AC_BCLK
R_OUT+
L_OUT+
LBP
MIC1
CD-L
CD-R
PHONE
AMP_MUTE
AMP_MUTE
L_OUT-
MUTE
HP_SENSE
SPDIF/LFE#
SPDIFOUT
LFE
SPDIF/LFE#
SPDIFOUT
MU
T
E
LOUT-L
HP_SENSE
LOUT-R
MUTE
SPDIF/LINE-L
CHSEL
LINE-L
LINE-R
SPDIF/LINE-R
CHSEL
LINE-R
LINE-L
CLINE-L
CLINE-R
LAN_PWRON
H8_MUTE
R648 4.7K
R225
100K(R)
R629 47
C805 0.1UF
R628 47
L46 FCM1608K-121
C868 0.1UF
R620 10K(R)
C233 1U(R)
C815 1UF
L47 FCM1608K-121
R228 100(R)
C806 1UF
C234 1U(R)
C800
22P
L143
FCM1608K-121
C785
1UF
R617
5.6K
C885
4.7UF(0805)
U36
ALC650
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
R661 20K
R636 4.7K
L48 FCM1608K-121
C835 1UF
C239
0.1UF
C874
10UF/10V
T
C893 0.22U(R)
C817
0.01UF
C795
0.01UF
C859
0.1UF
L152 FCM1608K-121
JSPK5
CON2
1
2
R726 0(R)
Q16
2N7002
G
S D
0.47U(R) C850
R669
15K
C820
0.1UF(R)
C791
0.1UF
C888
0.1UF
1M(R)
R630
T
C788
47P
T
L54 FCM1608K-121
C856 0.22U
C857 0.22U
C882
1000P
JSPK3
CON2
1
2
C846 1000P
R727 0
C786 1UF
C793
0.01UF
C829
4.7U(0805)
R649
4.7K
R702 10K
C240
0.1UF
C821 1UF
L45 FCM1608K-121
C808
0.01UF
C237 1UF
C819
0.1UF
Q14
2N7002
G
S D
R229 100(R)
C241
0.1UF
C841 1UF
C831
10UF/10V
JSPK6
CON2
1
2
C238 1UF
R671
1K
T
R642
0(R)
C848
1UF
R647 49.9K
C886
0.1UF
R570 10K
C807 0.1UF
R670 10K
C876
0.1UF
R640 0
0 C834
R222 20K
R223 20K
C844 0.1UF
C884 0.22U
R221 0
R220 10K
L53 FCM1608K-121
C797
1UF
C792
0.01UF
C787 1UF
R662 20K
C794 1UF
R646 49.9K
R627 20K
C836
0.1UF
T
R686
10K
C816 1UF
Q15
2N7002
G S
D
C798
10UF/10V
C826 1UF
D43
ISS355
A C
C828
0.1uF
C843 0.22U(R)
Q13
2N7002
G S
D
JSPK2
CON2S
1
2
T
C790
1UF
C830
1UF
R219
10K
C799
22P
R233
100K(R)
U43
78L05(SO8)
1 8
2 3 6 7 4
OUT IN
GND GND1 GND2 GND3 T
C867
0.1UF
C840 1UF
Y7
24.576MHz
C845
1000P
C832 10UF/10V
C833 0
C875
4.7U(0805)
R226 10(R)
R234
100K(R)
C796
0.01UF
R618 10K
JSPK4
CON2
1
2
R626 20K
R701
15K
C818
0.01UF R218
100K(R)
R638 0(R)
R641 0
L147
FCM2012V121
C784 1UF
Q17
2N7002 G
S D
R619 10K
C855
1000P
C847
1UF
C860
4.7U(0805)
R637 4.7K(R)
JSPK1
CON2S
1
2
C883 0.22U
R227 10(R)
C858
4.7UF(0805)
L151 FCM1608K-121
U33
APA4835
14
8
2
7
10
21
3
16
11
17
15
28
26
19 18
25 24
5
4
13
12
9
27
6
1
20
23
22
GND
GND
Sh
ut
Do
wn
DC Vo
l Co
nt
ro
l
Right in
HP sense
Ga
in
S
el
Vdd
Beep
-Left Out
+Left Out
+Right Out
-Right Out
L2in
L2fin
R2
fin
R2
in
Mute
Mode
Left Dock
Left in
Right Dock
Vdd
Vdd
GND
GND
GND
B
ypas
s
C887
4.7U(0805)
R645 20K
C906
10UF/10V
R635
4.7K
L144
BK3216HS800
U40
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
R644 20K
C801
0.1UF
C907
10UF/10V L148 FCM2012V121(R)
C842 8200P
C827 8200P
C849
1UF(R)
C895
10UF/10V
C825 1UF
For some crystal,
For headphone application,
the bias resistor is needed
AGND:25,26,27,28,29,30,31,32,33
f=1/(2 π R3C2)=2KHZ, so C2=1.6nF
60 mil 60 mil
7/8
7/8 7/8
40EV:14K 40EV:14K