ALC202 데이터 시트보기 (PDF) - Realtek Semiconductor

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ALC202

TWO CHANNEL AC97 AUDIO CODEC

Realtek Semiconductor 

ALC202/ALC202A

6.1.10 MX14 VIDEO Volume

Default: 8808h

Register 14h controls the video input volume. Each step in bits 4:0 correspond to 1.5dB in increase/decrease in volume for the

right channel, allowing 32 levels of volume, from 00000 to 11111. Each step in bits 12:8 correspond to 1.5dB in

increase/decrease in volume for the left channel, allowing 32 levels of volume, from 00000 to 11111.

Bit

15

14:13

12:8

7:5

4:0

Type

R/W

R/W

R/W

Function

Mute Control: 1: Mute (-∞ dB) 0: Normal

Reserved

Video Left Volume: (VLV[4:0]) in 1.5 dB steps

Reserved

Video Right Volume: (VRV[4:0]) in 1.5 dB steps

For VLV/VRV:

00h +12 dB Gain

08h 0dB gain

1Fh -34.5dB Gain

6.1.11 MX16 AUX Volume

Default: 8808h

Register 16h controls the auxiliary input volume. Each step in bits 4:0 correspond to 1.5dB in increase/decrease in volume for

the right channel, allowing 32 levels of volume, from 00000 to 11111. Each step in bits 12:8 correspond to 1.5dB in

increase/decrease in volume for the left channel, allowing 32 levels of volume, from 00000 to 11111.

Bit Type

Function

15

14:13

12:8

7:5

4:0

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

Reserved

R/W AUX Left Volume: (ALV[4:0]) in 1.5 dB steps

Reserved

R/W AUX Right Volume: (ARV[4:0]) in 1.5 dB steps

For ALV/ARV:

00h +12 dB Gain

08h 0dB gain

1Fh -34.5dB Gain

6.1.12 MX18 PCM_OUT Volume

Default: 8808h / 0808h

Register 18h controls the PCM_OUT output volume. Each step in bits 4:0 correspond to 1.5dB in increase/decrease in volume

for the right channel, allowing 32 levels of volume, from 00000 to 11111. Each step in bits 12:8 correspond to 1.5dB in

increase/decrease in volume for the left channel, allowing 32 levels of volume, from 00000 to 11111.

Bit Type

Function

15

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

14:13

Reserved

12:8 R/W PCM Volume: (PLV[4:0]) in 1.5 dB steps

7:5

Reserved

4:0

R/W PCM Right Volume: (PRV[4:0]) in 1.5 dB steps

For PLV/PRV:

00h +12 dB Gain

08h 0dB gain

1Fh -34.5dB Gain

When ID=01, the default value is 0808h.

2002/07/30

13

Rev.1.28

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