AD1887 Analog Devices, AD1887 Datasheet - Page 11

• Manufacturer Part Number: AD1887
• Description: AC97 SoundMAX Codec
• Manufacturer: Analog Devices

PCM Out Volume (Index 18h)
ROV[4:0]
LOV[4:0]
OM
Record Select Control Register (Index 1Ah)
RS[2:0]
LS[2:0]
Used to select the record source independently for right and left. See table for legend.
The default value is 0000h, which corresponds to Mic in.
Record Gain (Index 1Ch)
RIM[3:0]
LIM[3:0]
IM
R g
R g
R g
N m
N m
N m
1 h
1 h
1 h
R g
R
N m
N
1 h
1
R g
R g
R g
R g
R
N m
N m
N m
N m
N
1 h
1 h
1 h
1 h
1
R g
R g
R g
R g
R
N m
N m
N m
N m
N
1 h
1 h
1 h
1 h
1
A
A
A
A
A
e
e
e
8
8
8
8
8
e
e
u
u
u
u
u
C
C
C
C
C
e
e
e
e
e
u
u
u
u
u
e
e
e
e
e
u
u
u
u
u
g
h
h
m
g
g
h
m
m
N
N
N
N
N
P
P
P
P
P
V
V
V
V
V
N
N
N
N
N
R
R
R
R
R
N
N
N
N
N
R
R
R
R
R
C
C
C
C
C
o
o
o
o
o
e
e
e
e
e
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
c e
c e
c e
c e
c e
u l
u l
u l
u l
u l
c
c
c
c
c
m
m
m
m
m
m
m
m
m
m
M
M
M
M
M
m
m
m
m
m
o
o
o
o
o
o
o
o
o
o
m
m
m
e
e
e
e
e
m
m
e
e
e
e
e
e
e
e
e
e
r
r
r
r
r
r
r
r
r
r
O
O
O
O
O
d
d
d
d
d
d
d
d
d
d
e
e
e
e
e
u
u
u
u
u
LS2 . . . LS0
0
1
4
5
6
S
S
S
S
S
G
G
G
G
G
t
t
t
t
t
e
e
e
e
e
a
a
a
a
a
Left PCM Out Volume. Allows setting the PCM left channel attenuator in 32 steps. The LSB represents 1.5 dB,
Right Record Select
Left Record Select
Right Input Mixer Gain Control. Each LSB represents 1.5 dB, 0000 = 0 dB and the range is 0 dB to 22.5 dB.
Left Input Mixer Gain Control. Each LSB represents 1.5 dB, 0000 = 0 dB and the range is 0 dB to 22.5 dB.
Right PCM Out Volume. Allows setting the PCM right channel attenuator in 32 steps. The LSB represents 1.5 dB,
and the range is +12 dB to –34.5 dB. The default value is 0 dB, mute enabled.
and the range is +12 dB to –34.5 dB. The default value is 0 dB, mute enabled.
PCM Out Volume Mute. When this bit is set to “1,” the channel is muted.
e l
e l
e l
e l
e l
Input Mute
0 = Unmuted
1 = Muted or –∞ dB Gain
n i
n i
n i
n i
n i
t c
t c
t c
t c
t c
D 5
D 5
D 5
D 5
D
OM
OM
OM
O M
O
1
1
1
1
1
M
5
D 5
D 5
D 5
D 5
D
IM
IM
IM
I
IM
M
D 5 1
D 5 1
D 5 1
D 5 1
D
X X X X X
1
1
1
1
1
D 4
D 4
D 4
D 4
D
X X X X X
5
5 1
1
1
1
1
1
4
D 4
D 4
D 4
X X X X X
D 4
D
1
1
1
D 4 1
D 4 1
D 4 1
D 4 1
D
X X X X X
1
1
D 3
D 3
D 3
D 3
D
X X X X X
4
4 1
1
1
1
1
1
MIC
CD_L
LINE_IN_L
Stereo Mix (L)
Mono Mix
Left Record Source
3
D 3
D 3
D 3
D 3
D
X X X X X
1
1
1
1
1
D 3 1
D 3 1
D 3 1
D 3 1
D
X X X X X
D 2
D 2
D 2
D 2
D
L
L
L
L
L
3
O
O
O
O
O
3 1
1
1
1
1
1
2
V
V
V
V
V
D 2
D 2
D 2
D 2
D
X X X X X
4
4
4
4
4
1
1
1
1
1
D 2 1
D 2 1
D 2 1
D 2 1
D
X X X X X
2
D 1
D 1
D 1
D 1
D
L
L
L
L
L
2 1
O
O
O
O
O
1
1
1
1
1
Mute
0
0
0
1
IM
0
0
1
D 1
D 1
D 1
D 1
D
L
L
L
L
L
1
V
V
V
V
V
I
I
I
I
I
1
1
1
1
1
3
3
3
3
3
M
M
M
M
M
D 1 1
D 1 1
D 1 1
D 1 1
D
X X X X X
1
Volume Table (Index 0Ch to 18h)
3
3
3
3
3
1 1
D 0
D 0
D 0
D 0
D
L
L
L
L
L
O
O
O
O
O
xIM3 . . . xIM0
1111
0000
xxxxx
1
1
1
1
1
D 0
D 0
D 0
D 0
D
L
L
L
L
L
0
V
V
V
V
V
I
I
I
I
I
1
1
1
1
1
D 0 1
D 0 1
D 0 1
D 0 1
D
L 2
L 2
L 2
L 2
L
2
2
2
2
2
M
M
M
M
M
0
x4 . . . x0
00000
01000
11111
xxxxx
S
S
S
S
S
0 1
2
2
2
2
2
2
D9
D9
D 9
L
L
L
D9
D
L
L
O
O
O
O
O
9
D9
D9
D 9
L
L
L
D9
D
L
L
V
V
V
V
V
D9
D9
D9
D
D9
L 1
L 1
L 1
L 1
L
I
I
I
I
I
9
M
M
M
1
1
1
1
1
M
M
S
S
S
S
S
9
1
1
1
1
1
1
D8
D8
D8
D 8
D
L
L
L
L
L
O
O
O
O
O
8
D8
D8
D8
D 8
D
L
L
L
L
L
D8
D8
D8
L 0
L 0
L 0
D8
D
L 0
L
V
V
V
V
V
I
I
I
I
I
S
S
S
S
S
8
8
M
M
M
M
M
0
0
0
0
0
0
0
0
0
0
0
Function
+12 dB Gain
0 dB Gain
–34.5 dB Gain
–∞ dB Gain
Function
22.5 dB Gain
0 dB Gain
–∞ dB Gain
D7
D7
D 7
X X X X X
D7
D
D7
D7
D7
D
D7
X X X X X
7
D7
D7
D7
D 7
D
X X X X X
RS2 . . . RS0
0
1
4
5
6
7
7
D6
D6
D6
D 6
D
X X X X X
6
D6
D6
D6
D 6
D
X X X X X
D6
D6
D6
D
D6
X X X X X
6
6
D5
D5
D5
D 5
D
X X X X X
5
D5
D5
D5
D 5
D
X X X X X
D5
D5
D5
X X X X X
D5
D
5
5
D4
D4
D 4
R
R
R
D4
D
R
R
O
O
O
O
O
4
D4
D4
D4
D 4
D
X X X X X
V
V
V
V
V
D4
D4
D4
D
D4
X X X X X
4
MIC
CD_L
LINE_IN_R
Stereo Mix (R)
Mono Mix
4
4
4
4
4
Right Record Source
4
D3
D3
D3
D 3
D
R
R
R
R
R
D3
D3
D3
D 3
D
R
R
R
R
R
O
O
O
O
O
3
I
I
I
I
I
3
D3
D3
D3
D
D3
X X X X X
M
M
M
M
M
V
V
V
V
V
3
3
3
3
3
3
3
3
3
3
3
D2
D2
D2
D 2
D
R
R
R
R
R
D2
D2
D2
D 2
D
R
R
R
R
R
O
O
O
O
O
D2
D2
D2
D
D2
R 2
R 2
R 2
R 2
R
2
I
I
I
I
I
2
M
M
M
M
M
S
S
S
S
S
V
V
V
V
V
2
2
2
2
2
2
2
2
2
2
2
2
D1
D1
D1
D 1
D
R
R
R
R
R
D1
D1
D 1
R
R
R
D1
D
R
R
D1
D1
D1
D
D1
R 1
R 1
R 1
R 1
R
O
O
O
O
O
1
I
I
I
I
I
S
S
S
S
S
1
1
M
M
M
M
M
V
V
V
V
V
1
1
1
1
1
1
1
1
1
1
1
AD1887
D0
D0
D0
D 0
D
R
R
R
R
R
D0
D0
D0
R 0
R 0
R 0
D0
D0
D0
D 0
D
R
R
R
R
R
D0
D
R 0
R
O
O
O
O
O
S
S
S
0
S
S
I
I
I
I
I
0
0
M
M
M
M
M
0
V
V
V
V
V
0
0
0
0
0
0
0
0
0
0
D
D
D
D
D
8
8
8
8
8
D
D
D
D
D
0 0 h
0 0 h
0 0 h
0 0
0 0
D
D
D
8
8
8
D
D
8
8
8
8
8
8
8
0
0
0
0
0
e
e
e
e
e
e
e
e
e
e
0 0
0 0
0 0
0 0
0 0
e
e
e
e
e
0
0
0
0
0
0
0
0
0
0
a f
a f
a f
a f
a f
a f
a f
a f
a f
a f
a f
a f
a f
a f
a f
8
8
8
8
8
0
0
0
0
0
h
h
h
h
h
h
h
u
u
u
u
u
h
h
h
h
h
u
u
u
u
u
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
t l
t l
t l
t l
t l