AD1819A Analog Devices, AD1819A Datasheet - Page 12

• Manufacturer Part Number: AD1819A
• Description: ac '97 Soundport(r) Codec
• Manufacturer: Analog Devices

AD1819A
Reset (Index 00h)
Note: Writing any value to this register performs a register reset, which cause all registers to revert to their default values (except
74h, which controls the serial configuration). Reading this register returns the ID code of the part and a code for the type of 3D
Stereo Enhancement.
ID [9:0]
SE [4:0]
Master Volume (Index 02h)
RMV [4:0]
RMV5
LMV [4:0]
LMV5
MM
Master Volume Mono (Index 06h)
MMV [4:0]
MMV5
MMM
R
N
0
R
N
0
R
N
0
6
0
2
e
u
e
u
e
u
h
h
h
g
m
g
g
m
m
N
M
N
R
N
M
a
a
s e
a
a
a
m
m
m
t s
t s
t e
r e
r e
e
e
e
V
V
o
o
u l
u l
m
m
Identify Capability. The ID field decodes the capabilities of AD1819A on the following:
Bit
ID0
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
ID9
*The AD1819A contains none of the optional features identified by these bits.
Stereo Enhancement. The 3D stereo enhancement field identifies the Analog Devices 3D Phat Stereo enhancement.
Right 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.
Right Master Volume Maximum Attenuation. Forces RMV [4:0] to all “1s,” –46.5 dB.
Left 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.
Left Master Volume Maximum Attenuation. Forces LMV [4:0] to all “1s,” –46.5 dB.
Master Volume Mute. When this bit is set to “1,” the left and right channels are muted.
MM
0
0
0
1
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 Maximum Attenuation –46.5 dB.
Mono Master Volume Mute. When this bit is set to “1,” the mono channel is muted.
e
e
M
o
n
o
M
D
D
M
D
X
M
5 1
5 1
M
5 1
M
D
D
S
D
X
X
E
4 1
4 1
4 1
4
Function
Dedicated Mic PCM in Channel
Modem Line Codec Support
Bass and Treble Control
Simulated Stereo (Mono to Stereo)
Headphone Out Support
Loudness (Bass Boost) Support
18-Bit DAC Resolution
20-Bit DAC Resolution
18-Bit ADC Resolution
20-Bit ADC Resolution
D
L
X
D
D
S
M
3 1
E
3 1
3 1
V
xMV5 . . . xMV0
00 0000
01 1111
1x xxxx
xx xxxx
3
5
D
X
L
2 1
D
D
S
M
E
2 1
2 1
V
2
4
D
X
1 1
L
D
S
D
M
E
1 1
1 1
V
1
D
3
X
0 1
L
D
D
S
M
E
0 1
0 1
V
D
0
X
2
9
L
I
M
D
D
D
D
–12–
X
9
9
V
9
8
1
L
D
I
M
D
D
X
D
Function
0 dB Attenuation
–46.5 dB Attenuation
–46.5 dB Attenuation
7
8
8
V
8
0
dB Attenuation
D
X
I
D
D
6
D
X
7
7
7
M
D
M
I
D
D
5
D
X
V
6
AD1819A*
0
0
0
0
0
0
0
0
0
0
6
6
5
M
R
I
M
D
D
D
M
D
5
5
V
4
5
V
5
4
R
I
M
M
D
D
D
4
4
D
V
M
4
4
3
V
3
R
I
D
D
M
D
M
3
3
V
3
3
D
M
2
V
R
2
I
M
D
D
D
2
2
V
2
2
M
D
M
R
1
V
I
M
D
D
D
1
1
1
1
V
1
M
R
I
D
M
D
D
M
D
0
V
0
0
V
0
0
0
D
0
D
8
D
8
4
0
0
e
e
0
0
e
0
a f
a f
0
0
a f
REV. 0
0
h
h
u
u
h
u
t l
t l
t l