Audio Codec Alc272 - EUROCOM M770CU Service Manual

Schematic Diagrams

Audio Codec ALC272

Sheet 35 of 55
Audio Codec
ALC272
B - 36 Audio Codec ALC272
CODEC ( ALC272-GR )
PC BEEP 3 . 3 V S
L 4 2 H C B 1 60 8 K F - 1 2 1 T 25
.
B E E P C 7 4 6 C 69 7
3 6 B E E P
C 6 2 5 . 1 U _ 1 6 V _ 04 1 0 U _ 1 0 V _ 08
1 U _ 6 . 3 V _ 0 4
2 0 H D A _ S P K R
M I C 2 _ L A LC _ GP I O0
C 7 40 * . 1 U _ 1 6 V _ 0 4
M I C 2 _ R C 7 45 * . 1 U _ 1 6 V _ 0 4 C 6 5 0 22 P _ 5 0 V _ 0 4 A LC _ GP I O1
M I C 1 _ L C 7 60 * . 1 U _ 1 6 V _ 0 4 R 5 3 2 2 2 _ 04 A Z _ S D OU T _R
20 , 3 4 H D A _ S D OU T
M I C 1 _ R C 7 17 * . 1 U _ 1 6 V _ 0 4 R 5 3 0 2 2 _ 04 A Z _ B I T C LK _R
20 , 3 4 H D A _ B I T C L K
A Z _ S D I N 0 _ R
R 5 3 4 2 2 _ 04
20 H D A _ S D I N 0 R 5 2 7 2 2 _ 04 A Z _ S Y N C _ R
2 0, 3 4 H D A _S Y N C
A U D G R 5 2 6 2 2 _ 04 A Z _ R S T# _ R
2 0 , 3 4 H D A _ R S T#
E A P D _ MO D E
Layout Note:
3 1 S P D I F O
Ve ry c lo se to A ud io C ode c
B E E P R 57 0 1 0 K _ 04 P C B E E P _ C C 8 3 2 1U _ 1 0V _0 6 P C B E E P _ R
R 56 8 1 K _ 0 4
C 83 9 1 0 0P _5 0 V _ 0 4 MI C _ S E N S E R 5 2 0 2 0 K _ 1 % _ 04
A U D G 3 1 J D _ S E N S E
H P _ S E N S E R 5 1 7 5 . 1 K _ 1 % _ 04
3 1 J D _ S E N S E _ B
C 8 4 1 4 . 7 U _ 6 . 3 V _ 06 M I C 2 _ L
I N T _M I C I N T_ M I C _ R M I C 2 _ R
R 5 7 9 1 K _ 04 C 8 4 7 4 . 7 U _ 6 . 3 V _ 06
MI C 2 -V R E F O
M I C 1 - L MI C 1 _L _ C M I C 1 _ L
R 3 4 3 7 5 _ 1 % _0 4 C 7 6 1 4 . 7 U _ 6 . 3 V _ 06
3 1 M I C 1 -L
M I C 1 - R R 3 4 2 7 5 _ 1 % _0 4 MI C 1 _R _ C C 7 2 7 4 . 7 U _ 6 . 3 V _ 06 M I C 1 _ R
3 1 M I C 1 -R
Layout Note:
Co de c pi n 1 ~ p in 1 1 an d p in 4 4 ~ pin 4 8
ar e Di gi ta l sig na ls .
Th e ot he rs a re An al og s ign al s.
PIN 13 ,PIN34 JD_SENSE
AMP (TPA6017)
? ? ? ? ? ? ? ?
F R O N T -L
R 3 67 3 3 K _ 04 C 4 9 3
C 4 9 4
A U D G
F R O N T -R R 3 68 3 3 K _ 04 C 4 9 2
C 4 9 5
A U D G
M 77 0C U S PE AK ER 4 ? ? / 2W , ? ? 33 K
W 76 0C U S PE AK ER 8 ? ? / 1. 5W , ? ? 3 0K
W 76 0C ? ? 47 K
A U D G R 2 9 2
R 2 9 0
5 V S
3 . 3 V S R 2 8 7
R 2 9 1
A U D G
Low mute! C 6 6 9 ? 15db
C A *. 1 U _1 0 V _ X 7 R _ 0 4
2 5 P C H _ M U T E #
D 3 4 * S C S 3 5 5 V Ga in Set tings
GA IN0 GA IN1 A V(inv)
E A P D _ MO D E 1
0 0 6 dB
4 S P K _ E N
0 1 1 0 dB
3 6 K B C _ MU T E # 2
1 0 1 5.6 dB
U 3 4 1 1 2 1.6 dB
MC 7 4V H C 1 G0 8 D F T 1 G
PIN 25 ,P IN 38 ? 1? 10u F/ .1 uF
C 7 3 9 C 7 3 6
5 V S _ A U D
. 1 U _ 1 6 V _ 0 4 1 0 U _1 0 V _ 0 8
3 . 3V S _ A U D
C 7 3 3 C 8 6 1
A U D G
. 1U _ 1 6V _0 4 1 0 U _ 1 0 V _ 08
C 7 2 4 C 6 4 9
. 1U _ 1 6V _0 4 . 1 U _ 1 6 V _ 0 4
A U D G
U 3 3
A L C _ V R E F C 86 0 1 0 U _1 0 V _ 0 8
2 A U D G
GP I O0 / D MI C -D A TA 1/ 2
3 2 7
GP I O1 / D MI C -D A TA 3/ 4 V R E F
5
S D A T A - OU T
6 2 8 M I C 1 -V R E F O D 3 2 A C C H 35 5 P T M I C 1- V R E F O-R
B I T -C LK MI C 1 -V R E F O
8
1 0 S D A T A - I N D 3 3 A C C H 35 5 P T MI C 1 -V R E F O- L
S Y N C
1 1 3 7
R E S E T # M O N O -OU T
DIGITAL
4 7
E A P D
4 8 3 1 C 10 1 2 . 2 U _ 6 . 3 V _ X 5 R _ 0 4
4 5 S P D I F O 1 C P V E E 3 0 C 10 2 2 . 2 U _ 6 . 3 V _ X 5 R _ 0 4
S P D I F O 2 C B N
MI C 1 -L
2 9
C B P
4 6
D M I C -C L K 1 / 2
4 4 A U D G
D M I C -C L K 3 / 4
4 3 3 5 F R O N T -L
N C L O U T 1 -L
1 2 3 6 F R O N T -R
P C B E E P -I N L O U T 1 -R
J D 1 1 3 3 9
S e n se A (JD 1 ) L O U T 2 -L
J D 2 3 4 4 1
S e n se B (JD 2 ) L O U T 2 -R
1 4 3 3
ANALOG
L I N E 2 -L H P OU T -L H E A D P H O N E -L 3 1
1 5 3 2
L I N E 2 -R H P O U T -R H E A D P H O N E -R 3 1
1 6 2 3
MI C 2 -L L I N E 1 -L
1 7 2 4
MI C 2 -R LI N E 1 -R
NEAR CODEC
1 8
L I N E 1 -V R E F O
J D R E F
1 9 4 0 R 3 6 1 2 0 K _ 1 % _0 4
MI C 2 -V R E F O J D R E F
2 0
L I N E 2 -V R E F O
2 1
2 2 MI C 1 -L A U D G
MI C 1 -R
A L C 2 7 2
A U D G
5V S _ R E A R
10/16 chang e C 4 8 9 C 4 86 C 4 6 3
footprinter
0 . 1 U _ 1 6 V _ 04 * 1 U _ 1 0 V _ 06 1 0U _ 1 0V _0 8
U 2 7
L I N -
. 1 U _1 0 V _ X 7 R _ 0 4 5 6
L I N - P V D D
. 1 U _1 0 V _ X 7 R _ 0 4 L I N + 9 1 5
L I N + P V D D
1 6
V D D
. 1 U _1 0 V _ X 7 R _ 0 4 R I N - 1 7
R I N -
. 1 U _1 0 V _ X 7 R _ 0 4 R I N + 7 4 S P K OU T L+ L 3 F C M 1 0 05 K F -12 1 T 0 3 _0 4
R I N + L O U T + .
8 S P K OU T L- L 2 F C M 1 0 05 K F -12 1 T 0 3 _0 4
.
S P K _ E N 1 9 L O U T -
S D #
* 1 0 0K _0 4
1 0 0 K _ 0 4 G A I N 0 2 1 8
GA I N 0 R O U T + S P K O U T R + 31
G A I N 1 3
GA I N 1
* 1 0 0K _0 4 1 4 S P K O U T R - 3 1
R O U T -
1 0 0 K _ 0 4 1 L 4 0 * 1 0 mi l _ s ho rt
GN D
1 1
GN D
1 3 1 0 A MP _ B Y P A S S
GN D B Y P A S S
2 0
GN D
2 1 1 2
C 4 65
E X P OS E D P A D N C
T P A 6 0 1 7A 2 P W P R 0 . 4 7 U _ 1 0 V _ 0 4
I NPUT I MPEDA NCE
90 k
A U D G A U D G
70 k
45 k
25 k
3. 3V S 2 , 1 0 , 1 1, 1 2 , 1 3 , 1 4 , 20 , 2 1 , 2 2 , 2 3, 24 , 2 5 , 2 6 , 2 7, 2 9 , 3 0 , 3 1 , 32 , 3 3 , 3 6 , 3 7, 42 , 4 3 , 4 4 , 46
5V 2 7 , 3 1, 37 , 3 9 , 4 0 , 4 1, 4 4
5V S 1 2 , 2 0, 23 , 2 7 , 3 1 , 3 3, 3 7 , 4 2 , 4 3 , 46
D 3 1 * S C S 5 5 1 V -3 0
C A
5 V
L7 7 H C B 1 6 0 8 K F -1 2 1 T2 5
. 5 V S
C 66 5 C 7 3 7
*. 1U _ 1 6V _0 4
*1 U _1 0 V _ 0 6
L 3 7 *1 0 m i l _ s h or t
C 6 6 8 . 1 U _ 1 6 V _ 04
C 6 2 4 . 1 U _ 1 6 V _ 04
C 7 5 6 . 1 U _ 1 6 V _ 04
C 6 2 9 . 1 U _ 1 6 V _ 04
C 6 3 0 . 1 U _ 1 6 V _ 04
FOR EMI
A U D G
Layout Note:
V er y cl ose t o Au di o C od ec
R 3 6 5 R 3 6 0
4 . 7K _0 4 4 . 7K _0 4
MI C 1 -R
C 7 3 0 C 7 4 7
6 80 P _ 5 0 V _ X 7R _ 0 4 6 80 P _ 5 0 V _ X 7R _ 0 4
A U D G A U D G
M I C 2 - V R E F O J_ INTMIC 1
2 1
R 1 8 1
2 . 2 K _ 0 4
J _ I N T MI C 1
I N T _M I C
1
C 2 5 5 2
8 8 2 6 6 -02 0 0 1
3 3 0 P _ 5 0 V _ X7 R _ 04
P C B F o o t p ri n t = 8 8 2 6 6-2 R
5 V S
L 4 1 H C B 10 0 5 K F - 1 2 1 T 20
C 49 1
J_SP K1
* 10 U _ 10 V _ 0 8
2 1
A U D G
J _ S P K L 1
S P K OU TL + _ R
1
S P K OU TL -_ R
2
8 52 0 4 - 0 2 00 1
P C B F o o t p ri n t = 85 2 0 4 -0 2R
C 5 C 9
1 80 P _ 5 0 V _ 0 4 1 8 0 P _ 5 0V _0 4
F OR E MI