ALC880主板声卡芯片

ALC880

ALC880是目前台式机电脑常用的一款HD Audio 声卡芯片。

ALC880的内部电路框图

SRC DAC 05h

M

SideSurr

17h

VOL M

0Fh

In/Out

SIDE-SURR-L / R

04h

M

M

CLfe

16h

SRC DAC

VOL M In/Out

CEN / LFE -OUT

03h

M

0Eh

SRC

DAC

M

VOL

Surr

M

In/Out

15h

0Dh

SURR - OUT-L / R

02h M

SRC

DAC

M

Front

M

14h

VOL

In/Out RESET# 0Ch

FRONT - OUT-L / R

M

BITCLK

o

m

SYNC

c

SDOUT

0Bh

SDIN

V O L

V O L V O L

V O L

V O L

V O L

V O L V O L

M M M M M M M M

09h

BEEP

.

Gen

1Dh

HDA Link PCBEEP

SRC

ADC

G

Interface

M

13h

CD-L / R / GND

Front

1Ch

Surr

1Bh

CLfe M

SideSurr

In/Out

LINE2-L / R,VREFO

x

12h

Front

i

08h f

1Ah

CLfe M

SRC

ADC

G

M

SideSurr In/Out

LINE1-L / R,VREFO

11h

Front

a

Surr

19h

CLfe M

SideSurr In/Out

MIC2-L/R,VREFO

n

07h

Front 10h

1

SRC

ADC

G

Surr

18h

M

CLfe M

: 立体声模拟信号

SideSurr

In/Out

MIC1-L/R,VREFO

: 立体声数字信号

1Eh

VOL : 模拟音量

06h

S/PDIF-OUT

M : 模拟静音

i

1Fh

20h

0Ah

S/PDIF-IN

Vendor

c h

21h

Widget

Jack

Sense A

Detection

Sense B

w

.

w

w

ALC880的针脚封装图

A V D D 1 A V S S 1 V R E F M I C 1-V R E F O -L L I N E 1-V R E F O -L M I C 2-V R E F O L I N E 2-V R E F O M I C 1-V R E F O -R D C V O L S e n s e

B (J D 2) F R O N T -O U T -L F R O N T -O U T -R

o m

LINE1-VREFO-R

AVDD2 SURR-OUT-L

JDREF

SURR-OUT-R

AVSS2 CEN-OUT

LFE-OUT

SIDESURR-OUT-L SIDESURR-OUT-R

SPDIFI/EAPD

SPDIFO

w

w

w

36 35 34 33 32 31 30 29 28 27 26 25

c

37

24

38

23

39

i

22

40

x

21

41

ALC880(D)

f

20

42

19

43

a

18

44 17

45 LLLLLLL TXXXV 16

46

n

15

47

h

14

48

13

1 2 3 4 5 6 7 8 9 10 11 12

2

c 0

.

D V D D 1 G P I O 0 G P I O 1 D V S S 1

S D A T A -O U T

C L K

D V S S 2 S D

A T A -I N

D V D D 2

S Y N C R E S E T #P C B E E P

-

LINE1-R

LINE1-L

MIC1-R

MIC1-L

CD-R

CD-GND CD-L MIC2-R

MIC2-L

LINE2-R

LINE2-L

Sense A (JD1)