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Schematic Diagrams
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Sheet 25 of 41
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AUDIO CODEC
ALC261C
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B - 26 AUDIO CODEC ALC261C
AUDIO CODEC AL C261C
AUDIO CODEC
ALC2 69 VB
VT18 02P
For 1 .5V HDA Link.
R 4 6 0
1. 5VS
For 3.3V H DA Lin k.
R 4 6 1
* 1 0 m i l _ s ho rt
3 .3 VS_ AUD
3 .3VS
PD#Control
L 11 0
H CB 1 0 0 5K F -12 1 T 2 0
1
2
AZ_RST# For 3 .3V
C6 8 8
5 VS
HDA Link De-pop
0 .1u _ 1 6V _Y 5 V_0 4
R 4 62
D3 3
BAT 54 AW G H
1 0 K_ 04
1
H DA_ R ST#
A
C
3
2
A
D
2 7
KBC _M UT E#
Q 13
Please Let LC Filter
R 4 6 6
* 10 0 K _ 0 4
G
* MT N7 0 0 2Z HS3
5VS
t o g e t he r a n d c l o s e t o
D
S
Codec.IF Speaker
Q 1 2
HD A_ RST #
G
*BSS1 3 8 _N L
wire length is less
AZ_RST# Fo r 1.5V
than 8000mils It don't
S
HDA L ink De-pop
need the LC Filter.
1 6
H DA_ SDO UT
C 7 0 2
1 6
H DA_ BIT CL K
R 4 71
1 6
HDA _SD IN0
1 6
H DA_ SY NC
1 6
HD A_R ST #
PC BEEP
D 28
BAT 5 4 CW G H
1
A
2 7
K B C _ B E E P
C
3
B E E P
R 4 77
4 7 K _ 0 4
2
A
1 6
HDA _SP KR
FOR VOLUMN
ADJUS T
3.3VS_AUD
5VS
20ms
AZ_RST#
PD#
Speaker wire length less than 8000mils , It don't need LC Filter.
SPKOUTR+,R-,L+,L - Trace width
Speaker 4 ohm------> 40mils
Speaker 8 ohm------> 20mils
PVD D1 _ 2
* 0 _ 0 4
C 6 80
C 68 1
1 0 u _1 0 V_ Y5 V _ 0 8
0 .1 u_ 1 6 V_ Y 5 V_ 04
DVD D_ IO
C6 8 2
C6 8 3
C 68 4
C6 8 5
1 0 u_ 1 0 V_Y 5 V _ 08
0 .1 u _1 6 V_ Y 5 V_ 04
* 1 0u _ 1 0V_ Y 5V_ 0 8
*0 .1 u _1 6 V_ Y5 V_ 0 4
3.3 VS_ AU D
C6 8 9
C 69 0
C 6 91
C6 9 2
10 u _ 10 V_ Y5 V_ 0 8
0 .1 u _1 6 V_ Y 5 V_ 04
0 .1 u _ 16 V_ Y5 V_ 0 4
1 0 u_ 1 0 V_Y 5 V _ 08
9
5
6
8
1
9
3
4
2
3
U 32
2
2
1
1
1
O
PD#
4
D
I
D
D
D
D
1 3
-
D
D
PD #
D
D
D
D
S en s e A
V
V
V
V
V
D
D
P
P
A
A
1 4
V
4 0
L INE2 -L
1 5
SPKO UT L +
D
S P K - L +
L INE2 -R
SPKO UT L -
4 1
S P K - L -
1 6
M IC2 -L
S P K O U T R -
4 4
1 7
4 5 S P K - R -
MIC2 -R
S P K O U T R +
S P K - R +
1 8
4 7
S en s e -B
E A P D
S P D I F C 2 / E A P D
S P D I F O
4 8
1 9
S P D I F O
J DR EF
2 0
M ON O-O UT
C O D E C _ G P I O 0
2
3
GP IO0 -DM IC-D AT
2 1
C O D E C _ G P I O 1
GP IO1 -DM IC-C L K
M IC1 -L
2 2
MIC1 -R
DIGITAL
ANALOG
2 3
5
L INE1 -L
2 4
2 2 p _ 5 0 V _ N P O _ 0 4
SD ATA- OUT
L INE1 -R
6
2 7
BIT -CL K
V R E F
8
2 8
2 2 _0 4
AZ _SD I N0 _ R
SD ATA- IN
LD O_ C AP
3 0
M IC1 -VR EF O-R
1 0
2 9
S Y N C
MIC 2- VREF O
H DA_ R ST#
1 1
3 2
RE SET#
HP-O UT -L
3 3
HP -OUT -R
BE EP_R
1 2
L
-
P C B E E P
O
3 5
F
CBN
E
R
3 6
C7 0 6
2
2
1
V
1
2
-
C B P
S
S
S
3 4
S
S
1
S
D
S
O P V E E
S
S
S
1u _ 6 .3V _Y 5 V_0 4
N
V
C
V
V
V
V
I
P
P
D
G
A
A
M
BEE P_C
2
7
7
3
9
6
1
4
4
4
2
3
3
A LC 2 69 Q -VB6 -GR
R4 7 8
C7 0 9
12/6
4.7 K_ 0 4
10 0 p _5 0 V_ NPO _ 04
A U D G
M IC1 -VRE F O-L
T h e rm a l P a d p l a c e 9
V i a h o l e .
L 1 12
* F CM 16 0 8 K-1 21 T 0 6_ s h ort
SPKO UT L +
SPKO UT L + _L
C 7 10
C7 1 1
* 1u _ 1 0V _Y 5 V_0 6
*1 8 0 p_ 5 0 V_N P O_ 0 4
S PKOU TL -
SP KOU TL -_ L
* F CM 16 0 8 K-1 21 T 0 6_ s h ort
C7 1 2
J_SPK1
L 1 13
*1 8 0 p_ 5 0 V_N PO _ 0 4
2
1
8 5 20 4 -0 20 0 1
EMI Require
PCB F o o tp rin t = 8 5 20 4 -0 2 R
5 VS
Layout note:
R 4 5 9
0 _ 06
GND and AUDG space is
60mils ~ 100mils
V T1802 P
L 75,C 7 18 ? ? ?
ANAL OG
DIGITAL
5 VS_A UD
5 VS
L 11 1
H CB 1 0 0 5KF -12 1 T 20
1
2
C6 9 3
C 69 4
C6 9 5
0.1 u _ 16 V_ Y 5V_ 0 4
1 0 u _1 0 V_ Y5 V _ 08
1 u_ 6 .3 V_ Y 5 V_ 04
A U D G
A U D G
MIC 2- VREF O
SENS E_A
R 4 6 3
2 0 K _ 1 % _ 0 4
MI C_ SENSE
M I C _ S E N S E 2 9
LI NE2 _ L
R 4 6 4
3 9 . 2 K _1 % _ 0 4
HP _SE NSE
VT1 802P
H P _ S E N S E 2 9
LI NE2 _ R
2.2K_04
MIC 2 _ L
C6 9 6
4 .7 u _6 .3 V_ X5 R _0 6
MIC 2_ R
C6 9 7
4 .7 u _6 .3 V_ X5 R _0 6
INT _ MIC
R 4 6 7
1 K _ 0 4
SENS E_B
V T1802P
VT1 802P
5.1K _1%_04
330P
JD RE F
R 4 6 8
2 0 K _ 1 % _ 0 4
MO NO _O UT
C6 9 9
* 10 0 p _5 0 V_ NPO _ 0 4
A U D G
MIC 1_ L _ C
C7 0 0
4 .7 u _6 .3 V_ X5 R _0 6
MIC 1_ R _C
C7 0 1
4 .7 u _6 .3 V_ X5 R _0 6
LI NE1 _ L
LI NE1 _ R
C7 0 3
0 .1 u _ 1 6 V_ Y5 V_ 04
CO DEC _V REF
C7 0 4
2 .2 u _6 .3 V_ X5 R _0 6
VT 1802P 10u
VT1 802P
75_1 %_04
LD O_ C AP
MIC 1- VREF O -R
MIC 1-L
C7 0 5
1 0 u_ 1 0 V_ Y5 V_ 08
R 4 7 2
1K _ 0 4
MIC 2- VREF O
VT 1802P NC PIN
MIC 1-R
R 4 7 4
1K _ 0 4
H E A D P H O N E - L
HEA DPH ONE -L 29
H E A D P H O N E - R
M IC1 -VRE F O-R
A U D G
R 4 7 5
2. 2 K _ 0 4
H E A D P H O N E - R 2 9
CO DEC _C BN
M IC1 -VRE F O-L
R 4 7 6
2. 2 K _ 0 4
CO DEC _C BP
VT1 802P
4.7K _1%_04
C7 0 7
C 7 08
2 .2 u _6 .3 V _ X5 R _0 6
2.2 u _ 6.3 V_ X5 R_ 0 6
SPKOU T R+
S P K O U T R + 2 9
A U D G
SPKOU T R-
S P K O U T R - 2 9
Reserve
9/8
C2 3 6
*1 8 0 p_ 5 0 V_ NPO _0 4
C2 4 6
*1 8 0 p_ 5 0 V_ NPO _0 4
A U D G
SPKOU T L+ _ L
SPKOU T L-_ L
J_ SPKL 1
S P K O U T R +
L 1 3 6
* F CM 1 60 8 K-1 21 T 0 6 _s h o rt
SPK OUT R +_ R
S P K O U T R -
SPK OUT R -_R
L 1 3 5
* F CM 1 60 8 K-1 21 T 0 6 _s h o rt
1
2
C2 3 7
*1 8 0 p_ 5 0 V_ NPO _0 4
C2 3 9
*1 8 0 p_ 5 0 V_ NPO _0 4
A U D G
EMI Requ ire
1
2
L 1 0 9
* H C B 1 0 0 5 K F - 1 2 1 T 2 0
A U D G
J P 1
* 1 0 m i l _ s h o r t
J P 2
* 1 0 m i l _ s h o r t
C 6 8 6
0 . 1 u _ 1 6 V _ Y 5 V _ 0 4
C 6 8 7
0 . 1 u _ 1 6 V _ Y 5 V _ 0 4
A U D G
J_INTMIC1
2
1
R 46 5
4 .7 K_ 04
J _ INT M IC1
INT _ MIC _ OU T
1
2
C 69 8
8 8 2 66 -0 2 00 1
6 8 0p _ 5 0V _X7 R_ 0 4
PCB F oo tp rint =8 8 2 66 -2 L
M IC1 -L _ M
M I C 1 - L M 2 9
M IC1 -R _M
MIC 1-R M 2 9
J _ SPK1
4
3
2
1
* 85 2 0 4-0 4 0 01
PN: 6-20-43130-104
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