AD1887 Analog Devices, AD1887 Datasheet - Page 14

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

AD1887
Serial Configuration (Index 74h)
Note: This register is not reset when the reset register (Register 00h) is written.
DHWR
REGM0
REGM1
REGM2
SLOT16
If your system uses only a single AD1887, you can ignore the register mask bits.
SLOT16 makes all AC Link slots 16 bits in length, formatted into 16 slots.
Miscellaneous Control Bits (Index 76h)
ARSR
DRSR
SRX8D7
SRX10D7
MODEN
ALSR
DLSR
DMS
DAM
LPMIX
DACZ
R g
R g
R g
R g
R
N m
N m
N m
N m
N
6 7 h
6 7 h
6 7 h
6 7 h
6 7
R g
R g
R g
R g
R
N m
N m
N m
N m
N
4 7 h
4 7 h
4 7 h
4 7 h
4 7
e
e
e
e
e
u
u
u
u
u
h
e
e
e
e
e
u
u
u
u
u
g
h
m
g
m
N
N
N
N
N
M c s
M c s
M c s
M c s
M
C
C
C
C
C
B s t
B s t
B s t
B s t
B
N
N
N
N
N
S
S
S
S
S
C
C
C
C
C
i
i
i
a
a
a
a
a
o
o
o
o
o
i
i
i
i
i
i
i
e
e
e
e
e
s t
a
a
a
a
a
o
o
o
o
o
m
m
m
c s
m
m
n
n
n
n
n
i r
i r
i r
i r
i r
m
m
m
m
m
f n
f n
f n
f n
f n
r t
r t
r t
r t
r t
e
e
e
e
e
l a
l a
l a
l a
l a
e
e
e
e
e
g i
g i
g i
g i
g i
l o
l o
l o
l o
l o
u
u
u
u
u
r
r
r
r
r
D 5 1
D 5 1
D 5 1
D 5 1
D
D
D
D
D
D
t a
t a
t a
t a
t a
Disable Hardware Reset.
Master Codec Register Mask.
Slave 1 Codec Register Mask.
Slave 2 Codec Register Mask.
Enable 16-bit slots.
ADC Right Sample Generator Select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch)
DAC Right Sample Generator Select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch)
Multiply SR1 rate by 8/7.
Multiply SR1 rate by 10/7. SRX10D7 and SRX8D7 are mutually exclusive; SRX10D7 has priority if both are set.
Modem filter enable (left channel only). Change only when DACs are powered down.
ADC Left Sample Generator Select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch)
DAC Left Sample Generator Select
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch)
Digital Mono Select
0 = Mixer
1 = Left DAC + Right DAC
Digital Audio Mode. DAC Outputs bypass analog mixer and sent directly to the codec output.
Low-Power Mixer
Zero-fill (vs. repeat) if DAC is starved for data.
5 1
A
A
A
A
A
o i
o i
o i
o i
o i
C
C
C
C
C
n
n
n
n
n
Z
Z
Z
Z
Z
D 5 1
D 5 1
D 5 1
D 5 1
D
S
S
S
S
S
D 4 1
D 4 1
D 4 1
D 4 1
D
L
L
L
L
L
L
L
L
L
L
P
P
P
P
P
5 1
4 1
O
O
O
O
O
M
M
M
M
M
T
T
T
T
T
I
I
I
I
I
X
X
X
X
X
6 1
6 1
6 1
6 1
6 1
D 3 1
D 3 1
D 3 1
D 3 1
D
X X X X X
D 4 1
D 4 1
D 4 1
D 4 1
D
R
R
R
R
R
3 1
E
E
E
E
E
4 1
G
G
G
G
G
M
M
M
M
M
D 2 1
D 2 1
D 2 1
D 2 1
D
D M
D M
D M
D M
D
2
2
2
2
2
A
A
A
2 1
A
A
M
D 3 1
D 3 1
D 3 1
R
R
R
D 3 1
D
R
R
E
E
E
E
E
3 1
D 1 1
D 1 1
D 1 1
D S
D S
D S
D 1 1
D
D S
D
G
G
G
G
G
1 1
M
M
M
M
M
M
M
M
M
M
S
1
1
1
1
1
D 2 1
D 2 1
D 2 1
R
R
R
D 0 1
D 0 1
D 0 1
D 0 1
D
D
D
D
D
D
D 2 1
D
R
R
E
E
E
E
E
0 1
L
L
L
L
L
2 1
G
G
G
G
G
S
S
S
S
S
R
R
R
R
R
M
M
M
M
M
0
0
0
0
0
D9
D9
D9
D9
D
X X X X X
9
D 1 1
D 1 1
D 1 1
D 1 1
D
X X X X X
1 1
D8
D8
D8
D8
D
A
A
A
A
A
L
L
L
L
L
8
S
S
S
S
S
D 0 1
D 0 1
D 0 1
D 0 1
D
X X X X X
R
R
R
R
R
0 1
D7
D7
D7
D7
D
M D
M D
M D
M D
M
EN
EN
EN
EN
E
N
D9
D9
D9
D
D9
X X X X X
7
O
O
O
O
O
9
D
D8
D8
D8
X X X X X
D8
D
D6
D6
D6
S
S
S
D7
D7
D7
D6
D
S
S
D7
D
R
R
R
8
R
R
6
7
X
X
X
X
X
0 1
0 1
0 1
0 1
0 1
D7
D7
D7
D
D7
X X X X X
7
D5
D5
D5
D5
D
S
S
S
S
S
D7
D7
D7
D7
D
R
R
R
R
R
5
7
D6
D6
D6
D
D6
X X X X X
X
X
X
X
X
6
8
8
8
8
8
D5
D5
D5
D
D5
X X X X X
D4
D4
D4
X X X X X
D4
D
5
4
D4
D4
D4
D
D4
X X X X X
D3
D3
D3
D3
D
X X X X X
4
3
D3
D3
D3
X X X X X
D3
D
D2
D2
D2
D
D
D
D2
D
D
D
3
2
R
R
R
R
R
S
S
S
S
S
D2
D2
D2
X X X X X
D2
D
R
R
R
R
R
2
D1
D1
D1
D1
D
X X X X X
D1
D1
D1
D
D1
X X X X X
1
1
D0
D0
D0
A
A
A
D0
D
A
A
D0
D0
D0
X X X X X
D0
D
R
R
R
R
R
0
S
S
S
S
S
0
R
R
R
R
R
D
D
D
D
D
0 7 h
0 7 h
0 7 h
0 7
0 7
D
D
D
4 0 h
4 0 h
4 0
D
D
4 0 h
4 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
e
e
e
e
e
4 0
4 0
4 0
4 0
4 0
a f
a f
a f
a f
a f
h
h
u
u
u
u
u
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