AD1819B

–13–

REV. 0

MMM

MMV5 . . . MMV0

Function

0

00 0000

0 dB Attenuation

0

01 1111

–46.5 dB Attenuation

0

1x xxxx

–46.5 dB Attenuation

1

xx xxxx

PC Beep (Index 0Ah)

g

e

R

m

u

N

e

m

a

N5

1

D4

1

D3

1

D2

1

D1

1

D0

1

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

Dt

l

u

a

f

e

D

h

A

0e

m

u

l

o

V

p

e

e

B

C

PM

C

P

XXXXXXXXX

X

3

V

C

P2

V

C

P1

V

C

P0

V

C

PX

h

0

0

0

8

PCV [3:0]

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 AD1819B 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.

PCM

PC Beep Mute. When this bit is set to “1,” the channel is muted.

PCM

PCV3 . . . PCV0

Function

0

0000

0 dB Attenuation

0

1111

–45 dB Attenuation

1

xxxx

–

Phone Volume (Index 0Ch)

g

e

R

m

u

N

e

m

a

N5

1

D4

1

D3

1

D2

1

D1

1

D0

1

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

Dt

l

u

a

f

e

D

h

C

0e

m

u

l

o

V

e

n

o

h

PM

H

P

XXXXXXXXXX

4

V

H

P3

V

H

P2

V

H

P1

V

H

P0

V

H

Ph

8

0

0

8

PHV [4:0]

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.

PHM

Phone Mute. When this bit is set to “1,” the channel is muted.

Mic Volume (Index 0Eh)

g

e

R

m

u

N

e

m

a

N5

1

D4

1

D3

1

D2

1

D1

1

D0

1

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

Dt

l

u

a

f

e

D

h

E

0e

m

u

l

o

V

c

i

MM

C

M

X

XXXXXXX

0

2

MX

4

V

C

M3

V

C

M2

V

C

M1

V

C

M0

V

C

Mh

8

0

0

8

MCV [4:0]

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.

M20

Microphone +20 dB Gain Block

0 = Disabled; Gain = 0 dB.

1 = Enabled; Gain = +20 dB.

MCM

Mic Mute. When this bit is set to “1,” the channel is muted.

Line In Volume (Index 10h)

g

e

R

m

u

N

e

m

a

N5

1

D4

1

D3

1

D2

1

D1

1

D0

1

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

Dt

l

u

a

f

e

D

h

0

1e

m

u

l

o

V

N

I

_

E

N

I

LM

LX

X

4

V

L

L3

V

L

L2

V

L

L1

V

L

L0

V

L

L

XXX

4

V

L

R3

V

L

R2

V

L

R1

V

L

R0

V

L

Rh

8

0

8

8

RLV [4:0]

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.

LLV [4:0]

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.

LM

Line In Mute. When this bit is set to “1,” the channel is muted.