ALC202 datasheet(9/29 Pages) ETC

9 / 29 page

Preliminary

Avance Logic, Inc.

ALC202

- 9 -

Rev0.62

http://www.realtek.com.tw

MX0A

PC BEEP Volume

Default: 8000H

Bit

Type

Function

R/W Mute Control 0 : Normal 1 : Mute (-¥ dB)

14:5

Reserved

4:1

R/W PC Beep Volume (PBV[3..0]) in 3 dB step

Reserved

For PBV,

00h

0 dB attenuation

0Fh

45 dB attenuation

MX0C

PHONE Volume

Default: 8008H

Bit

Type

Function

R/W Mute Control 0 : Normal 1 : Mute (-¥ dB)

14:5

Reserved

4:0

R/W Phone Volume (PV[4..0]) in 1.5 dB step

For PV,

00h

+12 dB Gain

08h

0dB gain

1Fh

-34.5dB Gain

MX0E

MIC Volume

Default: 8008H

Bit

Type

Function

R/W Mute Control 0: Normal 1 : Mute (-¥ dB)

14:10

Reserved

9:8

R/W Boost Gain Option (BGO)·

00: 20 dB 01: 6 dB 10: 12 dB 11: 29.5 dB (V=30*Vmic-in)

Reserved

R/W Boost Control (BC)

0: Disable 1: Enable Boost

Reserved

4:0

R/W Mic Volume (MV[4..0]) in 1.5 dB step

For MV,

00h

+12 dB Gain

08h

0dB gain

1Fh

-34.5dB Gain

If 29.5dB boost gain is selected, input resistor can be reduced to save area of feedback

resistor.

MX10

LINE_IN Volume

Default: 8808H

Bit

Type

Function

R/W Mute Control 0 : Normal 1 : Mute (-¥ dB)

14:13

Reserved

12:8

R/W Line-In Left Volume (NLV[4..0]) in 1.5 dB step

7:5

Reserved

4:0

R/W Line-In Right Volume (NRV[4..0]) in 1.5 dB step

For NLV/NRV,

00h

+12 dB Gain

08h 0dB gain

1Fh -34.5dB Gain

MX12

CD Volume

Default: 8808H

Bit

Type

Function

R/W Mute Control 0 : Normal 1 : Mute (-¥ dB)

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