AD1819A Analog Devices, AD1819A Datasheet - Page 13

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

PC Beep (Index 0Ah)
PCV [3:0]
PCM
Phone Volume (Index 0Ch)
PHV [4:0]
PHM
Mic Volume (Index 0Eh)
MCV [4:0]
M20
MCM
Line In Volume (Index 10h)
RLV [4:0]
LLV [4:0]
LM
REV. 0
R
N
0
R
N
1
R
N
0
R
N
0
C
0
E
e
u
e
u
A
e
u
e
u
h
g
h
h
g
m
g
m
m
g
h
m
N
P
N
L
N
M
N
P
h
I
a
a
a
C
N
a
c i
o
m
m
m
m
e n
E
B
V
e
e
e
I _
e
e
o
V
p e
u l
N
o
m
u l
V
V
e
o
m
o
MMM
0
0
0
1
u l
u l
PC Beep Volume Control. The least significant bit represents 3 dB attenuation. This register controls the output
from 0 dB to a maximum attenuation of –45 dB. The PC Beep is routed to the Left and Right Line outputs even
when AD1819A is in a RESET State. This is so that Power-On Self Test (POST) codes can be heard by the user
in case of a hardware problem with the PC.
PC Beep Mute. When this bit is set to “1,” the channel is muted.
PCM
0
0
1
Phone Volume. Allows setting the Phone Volume 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.
Phone Mute. When this bit is set to “1,” the channel is muted.
Mic Volume Gain. Allows setting the Mic Volume 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.
Microphone +20 dB Gain Block
0 = Disabled; Gain = 0 dB.
1 = Enabled; Gain = +20 dB.
Mic Mute. When this bit is set to “1,” the channel is muted.
Right Line In Volume. Allows setting the Line In 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.
Left Line In Volume. Allows setting the Line In left 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.
Line In Mute. When this bit is set to “1,” the channel is muted.
e
m
m
e
e
M
P
D
D
P
D
L
D
H
C
C
M
5 1
5 1
5 1
5 1
M
M
M
D
D
D
D
X
X
X
X
4 1
4 1
4 1
4 1
D
D
D
D
X
X
X
3 1
3 1
3 1
X
3 1
MMV5 . . . MMV0
00 0000
01 1111
1x xxxx
xx xxxx
PCV3 . . . PCV0
0000
1111
xxxx
D
L
D
D
D
X
X
L
2 1
2 1
X
2 1
2 1
V
4
D
D
X
D
L
1 1
X
D
1 1
X
L
1 1
1 1
V
3
D
X
D
0 1
D
X
L
0 1
X
D
0 1
L
0 1
V
2
D
X
D
9
X
D
X
L
9
9
D
L
V
9
D
X
1
–13–
8
D
X
D
X
8
8
L
D
L
D
V
X
8
7
0
Function
0 dB Attenuation
–46.5 dB Attenuation
–46.5 dB Attenuation
Function
0 dB Attenuation
–45 dB Attenuation
–
D
D
X
X
7
7
dB Attenuation
D
M
X
dB Attenuation
D
7
2
6
D
0
D
X
X
6
6
D
X
D
X
6
5
D
X
5
D
X
5
D
X
M
5
D
C
P
4
V
H
D
4
V
4
P
R
4
D
C
D
L
V
4
V
4
M
3
4
D
C
P
3
V
D
H
3
V
3
P
R
3
D
C
D
L
V
3
V
3
M
2
3
D
C
P
2
V
H
D
2
P
2
V
R
D
C
2
D
L
V
2
V
2
1
2
M
D
C
P
P
1
V
R
D
H
D
C
1
D
L
V
1
V
1
V
1
1
AD1819A
0
1
M
P
D
R
C
D
X
D
H
D
L
0
V
0
V
0
V
0
0
0
0
D
8
D
8
D
8
D
8
0
0
e
0
8
e
0
e
0
e
a f
0
0
a f
0
a f
a f
8
8
8
h
u
h
u
h
h
u
u
t l
t l
t l
t l