AD1885JST Analog Devices Inc, AD1885JST Datasheet - Page 13

• Manufacturer Part Number: AD1885JST
• Description: IC AUDIO CODEC AC'97 48-LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1885JST

• Rohs Status: RoHS non-compliant
• Data Interface: Serial
• Resolution (bits): 16 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 87 / 90
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.15 V ~ 3.45 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP

Headphones Volume Registers (Index 04h)
RHV[5:0]
LHV[5:0]
HPM
Master Volume Mono (Index 06h)
MMV[4:0]
MMM
PC Beep Register (Index 0Ah)
PCV[3:0]
PCM
R g
R g
R g
R g
R
N m
N m
N m
N m
N
4 0 h
4 0 h
4 0 h
4 0 h
4 0
R g
R g
R g
R g
R
N m
N m
N m
N m
N
6 0 h
6 0 h
6 0 h
6 0 h
6 0
R g
R g
R g
R g
R
N m
N m
N m
N m
N
0 h
0 h
0 h
0 h
0
A
A
A
e
e
e
e
e
u
u
u
u
u
A
A
e
e
e
e
e
u
u
u
u
u
e
e
e
e
e
u
u
u
u
u
h
h
g
m
g
m
g
h
m
N
N
N
N
N
H
H
H
H
H
N
N
N
N
N
M
M
M
M
M
M
M
M
M
M
N
N
N
N
N
P
P
P
P
P
a
a
a
a
a
e
e
e
e
e
a
a
a
a
a
C
C
C
a
a
a
a
a
C
C
a
a
a
o
o
o
a
a
o
o
m
m
m
m
m
a
a
a
a
a
m
m
m
m
m
m
m
m
m
m
t s
t s
t s
t s
t s
n
n
n
n
n
_
_
_
_
_
d
d
d
d
d
B
B
B
e
e
e
e
e
o
o
o
o
o
B
B
e
e
e
e
e
r e
r e
r e
r e
r e
p
p
p
p
p
e
e
e
e
e
E
E
E
E
E
h
h
h
h
h
o
o
o
o
o
V
V
V
V
V
E
E
E
E
E
n
n
n
n
n
o
o
o
o
o
P
P
P
P
P
s e
s e
s e
s e
s e
u l
u l
u l
u l
u l
V
V
V
V
V
Right Headphone Volume Control. The least significant bit represents 1.5 dB. This register controls the out-
put from +6 dB to a maximum attenuation of –88.5 dB.
Left Headphone Volume Control. The least significant bit represents 1.5 dB. This register controls the output
from +6 dB to a maximum attenuation of –88.5 dB.
Headphone Volume Mute. When this bit is set to “1,” the channel is muted.
m
m
m
m
m
Mono Master Volume Control. The least significant bit represents 1.5 dB. This register controls the output from
0 dB to a maximum attenuation of 46.5 dB.
Mono Master Volume Mute. When this bit is set to “1,” the channel is muted.
PC Beep Volume Control. The least significant bit represents 3 dB attenuation. This register controls the output
from 0 dB to a maximum attenuation of –45 dB. The PC Beep is routed to Left and Right Line outputs even when
AD1885 is in a RESET state. This is so that Power-On Self-Test (POST) codes can be heard by the user in case
of a hardware problem with the PC.
PC Beep Mute. When this bit is set to “1,” the channel is muted.
V
V
V
V
V
o
o
o
o
o
u l
u l
u l
u l
u l
o
o
o
o
o
e
e
e
e
e
u l
u l
u l
u l
u l
m
m
m
m
m
D 5 1
D 5 1
D 5 1
D 5 1
D
M M
M M
M M
M M
M
m
m
m
m
m
e
e
e
e
e
5 1
M
M
M
M
M
e
e
e
e
e
M
D 5 1
D 5 1
D 5 1
P M
P M
P M
D 5 1
D
P M
P
D 5 1
D 5 1
D 5 1
D 5 1
D
H M
H M
H M
H M
H
C
C
C
C
C
5 1
5 1
P
P
P
P
P
D 4 1
D 4 1
D 4 1
D 4 1
D
X X X X X
M
M
4 1
D 4 1
D 4 1
D 4 1
D 4 1
D
X X X X X
D 4 1
D 4 1
D 4 1
D 4 1
D
X X X X X
D 3 1
D 3 1
D 3 1
D 3 1
D
X X X X X
4 1
4 1
HPM
0
0
0
1
3 1
PCM
0
0
1
D 3 1
D 3 1
D 3 1
L
L
L
D 3 1
D
L
L
H
H
H
H
H
3 1
D 3 1
D 3 1
D 3 1
D 3 1
D
X X X X X
D 2 1
D 2 1
D 2 1
D 2 1
D
X X X X X
V
V
V
V
V
3 1
2 1
5
5
5
5
5
D 2 1
D 2 1
D 2 1
D 2 1
D
L
L
L
L
L
H
H
H
H
H
D 2 1
D 2 1
D 2 1
D 2 1
D
X X X X X
2 1
D 1 1
D 1 1
D 1 1
X X X X X
D 1 1
D
V
V
V
V
V
2 1
1 1
xHV5 . . . xHV0
00 0000
01 1111
11 1111
xx xxxx
PCV3 . . . PCV0
0000
1111
xxxx
4
4
4
4
4
D 1 1
D 1 1
D 1 1
D 1 1
D
L
L
L
L
L
D 0 1
D 0 1
D 0 1
X X X X X
H
H
H
H
H
D 0 1
D
D 1 1
D 1 1
D 1 1
D 1 1
D
X X X X X
1 1
0 1
V
V
V
V
V
1 1
3
3
3
3
3
D 0 1
D 0 1
D 0 1
D 0 1
D
L
L
L
L
L
D9
D9
D9
D9
D
X X X X X
H
H
H
H
H
D 0 1
D 0 1
D 0 1
X X X X X
0 1
D 0 1
D
9
V
V
V
V
V
0 1
2
2
2
2
2
D9
D9
D9
D9
D
L
L
L
L
L
D8
D8
D8
D8
D
X X X X X
H
H
H
H
H
D9
D9
D9
D9
D
X X X X X
9
8
V
V
V
V
V
9
1
1
1
1
1
D7
D7
D7
D7
D
X X X X X
D8
D8
D8
L
L
L
D8
D
L
L
D8
D8
D8
D8
D
X X X X X
H
H
H
H
H
7
8
8
V
V
V
V
V
0
0
0
0
0
Function
6 dB Gain
–40.5 dB Attenuation
–88.5 dB Attenuation
–∞ dB Attenuation
Function
0 dB Attenuation
–45 dB Attenuation
∞ dB Attenuation
D6
D6
D6
D6
D
X X X X X
D7
D7
D7
D7
D
D7
D7
D7
D7
D
X X X X X
X X X X X
6
7
7
D6
D6
D6
D6
D
D5
D5
D5
D5
D
X X X X X
X X X X X
D6
D6
D6
D6
D
X X X X X
6
5
6
D5
D5
D5
D5
D
R
R
R
R
R
D4
D4
D4
M
M
M
D4
D
M
M
H
H
H
H
H
5
D5
D5
D5
D5
D
X X X X X
4
M
M
M
M
M
V
V
V
V
V
5
5
5
5
5
5
V
V
V
V
V
4
4
4
4
4
D4
D4
D4
D4
D
R
R
R
R
R
D4
D4
D4
P
P
P
D4
D
P
P
H
H
H
H
H
4
C
C
C
C
C
4
D3
D3
D3
D3
D
M
M
M
M
M
V
V
V
V
V
V
V
V
V
V
3
M
M
M
M
M
4
4
4
4
4
3
3
3
3
3
V
V
V
V
V
D3
D3
D3
D3
D
R
R
R
R
R
3
3
3
3
3
D3
D3
D3
D3
D
P
P
P
P
P
H
H
H
H
H
3
C
C
C
C
C
3
V
V
V
V
V
D2
D2
D2
D2
D
M
M
M
M
M
V
V
V
V
V
3
3
3
3
3
2
M
M
M
M
M
2
2
2
2
2
D2
D2
D2
R
R
R
D2
D
R
R
V
V
V
V
V
H
H
H
H
H
2
D2
D2
D2
D2
D
P
P
P
P
P
2
2
2
2
2
V
V
V
V
V
C
C
C
C
C
2
2
2
2
2
2
V
V
V
V
V
D1
D1
D1
D1
D
M
M
M
M
M
1
1
1
1
1
D1
D1
D1
D1
D
R
R
R
R
R
1
M
M
M
M
M
H
H
H
H
H
1
V
V
V
V
V
D1
D1
D1
D1
D
P
P
P
P
P
V
V
V
V
V
1
1
1
1
1
C
C
C
C
C
1
1
1
1
1
1
V
V
V
V
V
D0
D0
D0
D0
D
M
M
M
M
M
AD1885
D0
D0
D0
D0
D
R
R
R
R
R
0
0
0
0
0
H
H
H
H
H
0
M
M
M
M
M
0
D0
D0
D0
D0
D
X X X X X
V
V
V
V
V
V
V
V
V
V
0
0
0
0
0
0
0
0
0
0
0
D
D
D
D
D
0 8 h
0 8 h
0 8 h
0 8
0 8
D
D
D
D
D
0 8 h
0 8 h
0 8 h
0 8
0 8
e
e
e
e
e
D
D
D
0 8 h
0 8 h
0 8
0 0
0 0
0 0
0 0
0 0
D
D
0 8 h
0 8
a f
a f
a f
e
e
e
e
e
a f
a f
0 0
0 0
0 0
0 0
0 0
e
e
e
e
e
a f
a f
a f
a f
a f
0 0
0 0
0 0
0 0
0 0
h
h
u
u
u
u
u
a f
a f
a f
a f
a f
h
h
u
u
u
u
u
t l
t l
t l
t l
t l
h
h
u
u
u
u
u
t l
t l
t l
t l
t l
t l
t l
t l
t l
t l