ALC202 데이터 시트보기 (PDF) - Realtek Semiconductor
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ALC202 Datasheet PDF : 42 Pages
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ALC202/ALC202A
6.1.13 MX1A Record Select
Default: 0000h
Register 1Ah controls the record input volume. Each step in bits 2:0 correspond to 1.5dB in increase/decrease in volume for the
right channel, allowing 7 levels of volume, from 000 to 111. Each step in bits 10:8 correspond to 1.5dB in increase/decrease in
volume for the left channel, allowing 7 levels of volume, from 000 to 111.
Bit Type
Function
15:11
10:8
7:3
2:0
Reserved
R/W Left Record Source Select (LRS[2:0])
Reserved
R/W Right Record Source Select (RRS[2:0])
For LRS
0
0
0
0
0
0
0
7
MIC
CD LEFT
VIDEO LEFT
AUX LEFT
LINE LEFT
STEREO MIXER OUTPUT LEFT
MONO MIXER OUTPUT
PHONE
For RRS
0
0
0
0
0
0
0
0
MIC
CD RIGHT
VIDEO RIGHT
AUX RIGHT
LINE RIGHT
STEREO MIXER OUTPUT RIGHT
MONO MIXER OUTPUT
PHONE
6.1.14 MX1C Record Gain
Default: 8000h
Register 1Ch controls the record gain. Each step in bits 3:0 correspond to 1.5dB in increase/decrease in gain for the right
channel, allowing 16 levels of gain, from 0000 to 1111. Each step in bits 11:8 correspond to 1.5dB in increase/decrease in gain
for the left channel, allowing 16 levels of gain, from 0000 to 1111.
Bit Type
Function
15
R/W Mute Control: 1: Mute (-∞ dB) 0: Normal
14:12
Reserved
11:8 R/W Left Record Gain Select: (LRG[3:0]) in 1.5 dB steps
7:4
Reserved
3:0
R/W Right Record Gain Select: (RRG[3:0]) in 1.5 dB steps
For LRG/RRG:
0Fh +22.5dB
00h 0 dB (No Gain)
2002/07/30
14
Rev.1.28
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