Owners manual

System
H3 Datasheet(Revision1.2) Copyright© 2015 Allwinner Technology Co.,Ltd.All Rights Reserved. Page 279
Left channel AGC saturation flag
0 : no saturation
1: saturation
20
R
0x0
ADAP_LNOI_FLAG.
Left channel AGC noise-threshold flag
0: no noise-threshold
1: noise-threshold
19:12
R
0x0
ADAP_LCHAN_GAIN
Left channel Gain applied by AGC
(7.1format 2s component(-20dB – 40dB), 0.5dB/ step)
0x50 : 40dB
0x4F : 39.5dB
---------------
0x00 : 00dB
0xFF : -0.5dB
11:10
/
/
/
9
R
0x0
ADAP_RSATU_FLAG.
Right AGC saturation flag
0 : no saturation
1: saturation
8
R
0x0
ADAP_RNOI_FLAG.
Right channel AGC noise-threshold flag
0:
1:
7:0
R
0x0
ADAP_LCHAN_GAIN.
Right Channel Gain applied by AGC (7.1format 2s component)(0.5dB step）
0x50 : 40dB
0x4F : 39.5dB
---------------
0x00 : 00dB
0xFF : -0.5dB
4.21.5.14. 0x74 ADC DAP Left Control Register(Default Value: 0x001F7000)
Offset: 0x74
Register Name: AC_ADC_DAP_LCTR
Bit
R/W
Default/Hex
Description
31:24
/
/
/
23:16
R/W
0x1F
(-86dB)
ADAP_LNOI_SET.
Left channel noise threshold setting
0x00 : -24dB
0x01 : -26dB
0x02 : -28dB
----------------------
0x1D: -82dB
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