ALC202 Просмотр технического описания (PDF) - Realtek Semiconductor
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ALC202 Datasheet PDF : 42 Pages
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ALC202/ALC202A
6.1.1 MX00 Reset
Default: 5990h
Writing any value to this register will start a register reset, and causes all of the registers to revert to their default values, then the
written data is ignored. Reading this register returns the ID code of the specific part.
Bit
15
14:10
9
8
7
6
5
4
3
2
1
0
Type
R
R
R
R
R
R
R
R
R
R
R
Function
Reserved
Return 10110b
Read as 0 (No support for 20-bit ADC)
Read as 1 (Support for 18-bit ADC)
Read as 1 (Support for 20-bit DAC)
Read as 0 (No support for 18-bit DAC)
Read as 0 (No support for Loudness)
Read as 1 (Headphone output support)
Read as 0 (No simulated stereo; for analog 3D block use)
Read as 0 (No Bass & Treble Control)
Reserved, Read as 0
Read as 0 (No dedicated MIC PCM input)
6.1.2 MX02 Master Volume
Default: 8000h / 0000h
These registers control the overall volume level of the output functions. Each step on the left and right channels correspond to
1.5dB in increase/decrease in volume.
Bit Type
Function
15
R/W Mute Control: 1: Mute (-∞ dB) 0: Normal
14
Reserved
13:8 R/W Master Left Volume: (MLV[5:0]) in 1.5 dB steps
7:6
Reserved
5:0
R/W Master Right Volume: (MRV[5:0]) in 1.5 dB steps
For MRV/MLV: 00h 0 dB attenuation
3Fh 94.5 dB attenuation
When ID=01, the default value is 0000h.
6.1.3 MX04 Headphone/True Line Output Volume
Default: 8000h / 0000h
Register 04h controls the headphone (ALC202)/True Line (ALC202A) output volume. Each step in bits 5:0 and 13:8 correspond
to 1.5dB in increase/decrease in volume, allowing 63 levels of volume, from 000000 to 111111.
Bit Type
Function
15
R/W Mute Control: 1: Mute (-∞ dB) 0: Normal
14
Reserved
13:8 R/W Headphone/True Line Output Left Volume: (HPL[5:0]) in 1.5 dB steps
7:6
Reserved
5:0
R/W Headphone/True Line Output Right Volume: (HPR[5:0]) in 1.5 dB steps
For HPR/HPL: 00h 0 dB attenuation
3Fh 94.5 dB attenuation
When ID=01, the default value is 0000h.
2002/07/30
10
Rev.1.28
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