AD1885JST Analog Devices Inc, AD1885JST Datasheet - Page 21

IC AUDIO CODEC AC'97 48-LQFP

AD1885JST

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

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

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Sample Rate 0 (Index 78h)
Note: 32h is an alias for 78h. The VRA bit in register 2Ah must be set for the alias to work; if a zero is written to VRA, both
sample rates are reset to 48 kHz.
SR0[15:0]
Sample Rate 1 (Index 7Ah)
Note: 2Ch is an alias for 7Ah. The VRA bit in register 2Ah must be set for the alias to work; if a zero is written to VRA, both sample
rates are reset to 48 kHz.
SR1[15:0]
Vendor ID Registers (Index 7Ch–Eh)
S[7:0]
F[7:0]
T[7:0]
REV[7:0]
These bits are read-only and should be verified before accessing vendor defined features.
R g
R g
R g
R g
R
N m
N m
N m
N m
N
(
(
(
(
(
R g
R g
R g
R g
R
N m
N m
N m
N m
N
2 (
2 (
2 (
2 (
2 (
R g
R g
R g
R g
R
N m
N m
N m
N m
N
7 h
7 h
7 h
7 h
7
R g
R g
R g
R g
R
N m
N m
N m
N m
N
7 h
7 h
7 h
7 h
7
2 3
2 3
2 3
2 3
2 3
C
C
C
C
C
E
E
E
E
E
e
e
e
e
e
u
u
u
e
e
e
e
e
u
u
u
u
u
u
u
C
C
C
e
e
e
e
e
u
u
u
e
e
e
e
e
u
u
u
C
C
u
u
u
u
g
g
m
m
h
h
h
h
h
g
h
g
h
m
m
) h
) h
) h
) h
) h
/ )
/ )
/ )
/ )
/ )
8 7
8 7
8 7
8 7
8 7
7 /
7 /
7 /
7 /
7 /
N
N
N
V
V
V
N
N
N
V
V
V
N
N
V
V
N
N
V
V
A
A
A
A
A
h
h
h
h
h
e
e
e
e
e
e
a
a
a
a
a
e
e
a
a
a
a
a
e
e
h
h
h
h
h
n
n
n
n
n
n
n
n
n
n
m
m
m
m
m
m
m
m
m
m
N
N
N
N
N
S
S
S
S
S
d
d
d
d
d
d
d
d
d
d
a
a
a
a
a
N
N
N
N
N
S
S
S
S
S
a
a
a
a
a
e
e
e
e
e
e
e
e
e
e
o
o
o
o
o
o
o
o
o
o
m
m
m
m
m
m
m
m
m
m
a
a
a
a
a
a
a
a
a
a
r
r
r
r
r
r
r
r
r
r
m
m
m
m
m
m
m
m
m
m
p
p
p
p
p
I
I
I
I
I
I
e
e
e
e
e
I
I
I
I
D
D
D
D
D
D
D
D
D
D
e l
e l
e l
e l
e l
p
p
p
p
p
e
e
e
e
e
e l
e l
e l
e l
e l
1
1
1
1
1
2
2
2
2
2
R
R
R
R
R
Writing to this register allows the user to program the sampling frequency from 7 kHz (1B58h) to 48 kHz (BB80h)
in 1 Hertz increments. Programming a value greater than 48 kHz or less than 7 kHz may cause unpredictable
results.
in 1 Hertz increments. Programming a value greater than 48 kHz or less than 7 kHz may cause unpredictable results.
Writing to this register allows the user to program the sampling frequency from 7 kHz (1B58h) to 48 kHz (BB80h)
R
R
R
This register is ASCII encoded to “S.”
This register is ASCII encoded to “D.”
This register is ASCII encoded to “S.”
Revision Register field contains the revision number.
a
a
a
a
a
R
R
D 5 1
D 5 1
D 5 1
D 5 1
D
T7
T7
T7
T
T7
e t
e t
e t
e t
e t
a
a
a
a
a
D 5 1
D 5 1
D 5 1
D 5 1
D
F7
F7
F7
F
F7
7
5 1
e t
e t
e t
e t
e t
7
0
0
0
0
0
5 1
1
1
1
1
1
D 5 1
D 5 1
D 5 1
D 5 1
D
S
S
S
S
S
R
R
R
R
R
D 4 1
D 4 1
D 4 1
T6
T6
T6
D 5 1
D 5 1
D 5 1
D 5 1
D
S
S
S
S
S
D 4 1
D
T6
T
5 1
0
0
0
0
0
R
R
R
R
R
D 4 1
D 4 1
D 4 1
D 4 1
D
F6
F6
F6
F
F6
6
4 1
5 1
5 1
5 1
5 1
5 1
5 1
1
1
1
1
1
6
4 1
5 1
5 1
5 1
5 1
5 1
D 4 1
D 4 1
D 4 1
S
S
S
D 4 1
D
S
S
D 3 1
D 3 1
D 3 1
D 3 1
D
T5
T5
T5
T
T5
R
R
R
R
R
D 4 1
D 4 1
D 4 1
S
S
S
D 4 1
D
S
S
4 1
5
R
R
R
3 1
0
0
0
0
0
R
R
D 3 1
D 3 1
D 3 1
D 3 1
D
F5
F5
F5
F
F5
4 1
4 1
4 1
4 1
4 1
4 1
5
1
1
1
1
1
3 1
4 1
4 1
4 1
4 1
4 1
D 3 1
D 3 1
D 3 1
D 3 1
D
S
S
S
S
S
D 2 1
D 2 1
D 2 1
D 2 1
D
T4
T4
T4
T
T4
R
R
R
R
R
D 3 1
D 3 1
D 3 1
D 3 1
D
S
S
S
S
S
3 1
4
2 1
D 2 1
D 2 1
D 2 1
F4
F4
F4
0
0
0
R
R
R
R
R
D 2 1
D
F4
F
0
0
3 1
3 1
3 1
3 1
3 1
3 1
4
1
1
1
1
1
2 1
3 1
3 1
3 1
3 1
3 1
D 1 1
D 1 1
D 1 1
D 1 1
D
T3
T3
T3
T
T3
D 2 1
D 2 1
D 2 1
D 2 1
D
S
S
S
S
S
R
R
R
R
R
D 2 1
D 2 1
D 2 1
D 2 1
D
S
S
S
S
S
3
1 1
2 1
D 1 1
D 1 1
D 1 1
D 1 1
D
F3
F3
F3
F
F3
0
0
0
0
0
R
R
R
R
R
2 1
2 1
2 1
2 1
2 1
2 1
3
1
1
1
1
1
1 1
2 1
2 1
2 1
2 1
2 1
D 0 1
D 0 1
D 0 1
D 0 1
D
T2
T2
T2
T
T2
D 1 1
D 1 1
D 1 1
D 1 1
D
S
S
S
S
S
2
R
R
R
R
R
0 1
D 1 1
D 1 1
D 1 1
D 1 1
D
S
S
S
S
S
1 1
D 0 1
D 0 1
D 0 1
D 0 1
D
F2
F2
F2
F
F2
R
R
R
R
R
0
0
0
0
0
1 1
2
1 1
1 1
1 1
1 1
1 1
0 1
1
1
1
1
1
1 1
1 1
1 1
1 1
1 1
D9
D9
D9
T1
T1
T1
D9
D
T1
T
D 0 1
D 0 1
D 0 1
D 0 1
D
S
S
S
S
S
1
9
R
R
R
R
R
D 0 1
D 0 1
D 0 1
D 0 1
D
S
S
S
S
S
0 1
D9
D9
D9
F1
F1
F1
D9
D
F1
F
0
0
0
R
R
R
R
R
0
0
0 1
1
0 1
0 1
0 1
0 1
0 1
9
1
1
1
1
1
0 1
0 1
0 1
0 1
0 1
D8
D8
D8
D
D8
T0
T0
T0
T
T0
D9
D9
D9
S
S
S
0
D9
D
S
S
8
R
R
R
R
R
D9
D9
D9
S
S
S
D9
D
S
S
9
D8
D8
D8
D8
D
F0
F0
F0
F
F0
R
R
R
9 0
9 0
9 0
9 0
9 0
R
R
9
0
8
9 1
9 1
9 1
9 1
9 1
D7
D7
D7
D
D7
R
R
R
R
R
D8
D8
D8
D
D8
S
S
S
S
S
E
E
E
E
E
7
R
R
R
R
R
D8
D8
D8
D8
D
S
S
S
S
S
V
V
V
V
V
8
D7
D7
D7
D7
D
S7
S7
S7
S
S7
R
R
R
R
R
8 0
8 0
8 0
8 0
8 0
7
7
7
7
7
8
7
7
8 1
8 1
8 1
8 1
8 1
D6
D6
D6
R
R
R
D6
D
R
R
D7
D7
D7
D
D7
S
S
S
S
S
E
E
E
E
E
D7
D7
D7
D7
D
S
S
S
S
S
6
R
R
R
R
R
7
R
R
R
R
R
V
V
V
V
V
D6
D6
D6
D6
D
S6
S6
S6
S
S6
7 0
7 0
7 0
7 0
7 0
7
7 1
7 1
7 1
7 1
7 1
6
6
6
6
6
6
6
D6
D6
D6
S
S
S
D6
D
S
S
D5
D5
D5
D
D5
R
R
R
R
R
D6
D6
D6
D6
D
S
S
S
S
S
R
R
R
R
R
6
E
E
E
R
R
R
E
E
R
R
5
6
6 0
6 0
6 0
6 0
6 0
D5
D5
D5
D5
D
S5
S5
S5
S
S5
V
V
V
V
V
6 1
6 1
6 1
6 1
6 1
5
5
5
5
5
5
5
D5
D5
D5
D
D5
S
S
S
S
S
D5
D5
D5
D5
D
S
S
S
S
S
R
R
R
R
R
D4
D4
D4
R
R
R
D4
D
R
R
5
R
R
R
R
R
5
5 0
5 0
5 0
5 0
5 0
E
E
E
E
E
4
5 1
5 1
5 1
D4
D4
D4
S4
S4
S4
5 1
5 1
D4
D
S4
S
V
V
V
V
V
4
4
4
4
4
4
4
D4
D4
D4
D
D4
S
S
S
S
S
D4
D4
D4
D4
D
S
S
S
S
S
R
R
R
R
R
R
R
R
R
R
4
4
D3
D3
D3
D
D3
R
R
R
R
R
4 0
4 0
4 0
4 0
4 0
4 1
4 1
4 1
4 1
4 1
D3
D3
D3
D3
D
S3
S3
S3
S
S3
E
E
E
E
E
3
3
3
V
V
V
V
V
D
S
D
S
3
3
3
3
3
R
R
3
3
3 1
3 0
D2
D2
D2
D
D2
R
R
R
R
R
D2
D2
D2
D2
D
S2
S2
S2
S
S2
E
E
E
E
E
2
2
2
D2
D2
D2
D2
D
S
S
S
S
S
V
V
V
V
V
D2
D2
D2
D
D2
S
S
S
S
S
R
R
R
R
R
R
R
R
R
R
2
2
2
2
2
2
2
2 1
2 1
2 1
2 1
2 1
2 0
2 0
2 0
2 0
2 0
D1
D1
D1
D1
D
S1
S1
S1
S
S1
D1
D1
D1
D
D1
R
R
R
R
R
D1
D1
D1
S
S
S
1
D1
D
S
S
E
E
E
E
E
1
1
D1
D1
D1
S
S
S
D1
D
S
S
R
R
R
R
R
1
V
V
V
V
V
R
R
R
R
R
1
1 1
1 1
1 1
1 1
1 1
1
1
1
1
1
1 0
1 0
1 0
1 0
1 0
AD1885
D0
D0
D0
D0
D
S0
S0
S0
S
S0
D0
D0
D0
D0
D
S
S
S
S
S
D0
D0
D0
D
D0
R
R
R
R
R
0
D0
D0
D0
D
D0
S
S
S
S
S
0
R
R
R
R
R
E
E
E
E
E
0
0
R
R
R
R
R
0
0 1
0 1
0 1
0 1
0 1
V
V
V
V
V
0 0
0 0
0 0
0 0
0 0
0
0
0
0
0
D
D
D
1 4 h
1 4 h
1 4
D
D
D
D
D
B
B
B
B
B
D
D
1 4 h
1 4
D
D
D
3 5 h
3 5 h
3 5
D
D
3 5 h
3 5
D
D
D
D
D
B
B
B
B
B
B
B
B
e
e
e
B
B
e
e
e
e
e
e
e
4 4
4 4
4 4
4 4
4 4
a f
a f
a f
a f
a f
a f
a f
a f
a f
a f
B
B
B
e
e
e
e
e
e
e
e
B
B
0 8
0 8
0 8
0 8
0 8
e
e
0 6
0 6
0 6
0 6
0 6
a f
a f
a f
h
h
a f
a f
a f
a f
a f
a f
a f
0 8
0 8
0 8
0 8
0 8
u
u
u
u
u
u
u
u
u
u
h
h
h
h
h
h
h
t l
t l
t l
t l
t l
t l
t l
t l
t l
t l
u
u
u
u
u
u
u
u
u
u
h
h
h
h
h
t l
t l
t l
t l
t l
t l
t l
t l
t l
t l

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