AD1885JST Analog Devices Inc, AD1885JST Datasheet - Page 20

• 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

AD1885
JS0_OE
JS1_OE
JS0PUDIS
JS1PUDIS
JS0_OUT
JS1_OUT/FUNCT When enabled as GPO, the JS1 pin reflects the state of the JS1_OUT bit, otherwise this bit can be set to change
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 AD1885, you can ignore the register mask.
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
4 7 h
4 7 h
4 7 h
4 7 h
4 7
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
e
e
e
e
e
u
u
u
u
u
e
e
e
e
e
u
u
u
u
u
h
g
h
m
g
m
N
N
N
N
N
S
S
S
S
S
C
C
C
C
C
N
N
N
N
N
M
M
M
M
M
e
e
e
e
e
a
a
a
a
a
o
o
o
o
o
i r
i r
i r
i r
i r
a
a
a
a
a
m
m
m
m
m
f n
f n
f n
f n
f n
i
i
i
i
i
m
m
m
c s
c s
c s
c s
c s
m
m
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
e
e
e
e
e
u
u
u
u
u
C
C
C
C
C
r
r
r
r
r
t a
t a
t a
t a
t a
o
o
o
o
o
n
n
n
n
n
o i
o i
o i
o i
o i
r t
r t
r t
r t
r t
n
n
n
n
n
l o
l o
l o
l o
l o
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
DAC right sample generator select
Multiply SR1 rate by 8/7.
Multiply SR1 rate by 10/7. SRX10D7 and SRX8D7 are mutually exclusive.
Modem filter enable (left channel only). Change only when DACs and ADCs are powered down.
ADC left sample generator select
DAC left sample generator select
Digital Mono Select.
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.
B
B
B
B
B
D 5 1
D 5 1
D 5 1
D 5 1
D
S
S
S
S
S
6 16 16 16 16 1
i
i
i
i
i
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
0 = SR0 Selected (32h)
1 = SR1 Selected (2Ch).
0 = Mixer
1 = Left DAC and Right DAC.
L
L
L
s t
s t
s t
s t
s t
L
L
5 1
Enables JS0 pin as a general-purpose output.
Enables JS1 pin as a general-purpose output.
Setting the JS0PUDIS bit disables the JS0 pin internal pull-up.
Setting the JS1PUDIS bit disables the JS1 pin internal pull-up.
When enabled as GPO, the JS0 pin reflects the state of the JS0_OUT bit.
the functionality of JS1 so that only LINE_OUT is muted when JS1 is high.
O
O
O
O
O
T
T
T
T
T
D 5 1
D 5 1
D 5 1
D 5 1
D
D C
D C
D C
D C
D
Z Z Z Z Z
D 4 1
D 4 1
D 4 1
D 4 1
D
R
R
R
R
R
5 1
A
A
A
A
A
E
E
E
E
E
4 1
C
G
G
G
G
G
M
M
M
M
M
2
2
2
2
2
D 4 1
D 4 1
D 4 1
D 4 1
D
L
L
L
L
L
X X X X X
P
P
P
P
P
4 1
M
M
M
M
M
D 3 1
D 3 1
D 3 1
D 3 1
D
R
R
R
R
R
E
E
E
E
E
3 1
I
I
I
I
I
G
G
G
G
G
M
M
M
M
M
D 3 1
D 3 1
D 3 1
D 3 1
D
X X X X X
1
1
1
1
1
3 1
D 2 1
D 2 1
D 2 1
D 2 1
D
R
R
R
R
R
E
E
E
E
E
D 2 1
D 2 1
D 2 1
D 2 1
D
D M
D M
D M
D M
D
2 1
G
G
G
G
G
2 1
A
A
A
A
A
M
M
M
M
M
M
0
0
0
0
0
D 1 1
D 1 1
D 1 1
D 1 1
D
D S
D S
D S
D S
D
D 1 1
D 1 1
D 1 1
D 1 1
D
X X X X X
1 1
M
M
M
M
M
1 1
S
D 0 1
D 0 1
D 0 1
D 0 1
D
D
D
D
D
D
D 0 1
D 0 1
D 0 1
D 0 1
D
X X X X X
0 1
L
L
L
L
L
0 1
S
S
S
S
S
R
R
R
R
R
D9
D9
D9
D
D9
D
D
D
D
D
D9
D9
D9
D9
D
X X X X X
9
H
H
H
H
H
9
W
W
W
W
W
R
R
R
R
R
D8
D8
D8
D8
D
A
A
A
A
A
L
L
L
L
L
8
S
S
S
S
S
D8
D8
D8
D
D8
X X X X X
R
R
R
R
R
8
D7
D7
D7
D7
D
M D
M D
M D
M D
M
EN
EN
EN
EN
E
N
7
O
O
O
O
O
D7
D7
D7
D
D7
X X X X X
D
7
D6
D6
D6
D6
D
S
S
S
S
S
D7
D7
D7
D7
D
R
R
R
D6
D6
D6
D
D6
X X X X X
R
R
6
7
6
X
X
X
X
X
0 1
0 1
0 1
0 1
0 1
D5
D5
D5
D
D5
X X X X X
D5
D5
D5
D5
D
S
S
S
S
S
D7
D7
D7
D7
D
5
R
R
R
R
R
5
7
X
X
X
X
X
8
8
8
8
8
D4
D4
D4
D
D4
X X X X X
4
D4
D4
D4
D4
D
X X X X X
4
D3
D3
D3
D
D3
X X X X X
D3
D3
D3
X X X X X
D3
D
3
3
D2
D2
D2
D2
D
D
D
D
D
D
D2
D2
D2
D
D2
X X X X X
2
R
R
R
R
R
2
S
S
S
S
S
R
R
R
R
R
D1
D1
D1
D
D1
X X X X X
D1
D1
D1
D1
D
X X X X X
1
1
D0
D0
D0
D0
D
A
A
A
A
A
D0
D0
D0
D
D0
X X X X X
R
R
R
R
R
0
0
S
S
S
S
S
R
R
R
R
R
D
D
D
D
D
X X X X X
D
D
D
D
D
0 0 h
0 0 h
0 0 h
0 0
0 0
e
e
e
e
e
e
e
e
a f
a f
a f
e
e
a f
a f
0 0
0 0
0 0
0 0
0 0
a f
a f
a f
a f
a f
u
u
u
u
u
h
h
t l
t l
t l
t l
t l
u
u
u
u
u
t l
t l
t l
t l
t l