Owners manual

System
H3 Datasheet(Revision1.2) Copyright© 2015 Allwinner Technology Co.,Ltd.All Rights Reserved. Page 293
4.21.5.57. 0x180 DAC DRC Expander Low Output at Expander Threshold(Default Value: 0x00008D6E)
Offset: 0x180
Register Name: AC_DAC_DRC_LOPE
Bit
R/W
Default/Hex
Description
15:0
R/W
0x8D6E
The output of the expander which determine by equation OPE/6.0206. The
format is 8.24 (-70dB)
4.21.5.58. 0x184 DAC DRC Linear Slope High Setting Register(Default Value: 0x00000100)
Offset: 0x184
Register Name: AC_DAC_DRC_HKN
Bit
R/W
Default/Hex
Description
15:14
/
/
/
13:0
R/W
0x0100
The slope of the linear which determine by the equation that Kn = 1/R, there,
R is the ratio of the linear, which always is interger . The format is 8.24. (1:1)
4.21.5.59. 0x188 DAC DRC Linear Slope Low Setting Register(Default Value: 0x00000000)
Offset: 0x188
Register Name: AC_DAC_DRC_LKN
Bit
R/W
Default/Hex
Description
15:0
R/W
0x0000
The slope of the linear which determine by the equation that Kn = 1/R, there,
R is the ratio of the linear, which always is interger . The format is 8.24. (1:1)
4.21.5.60. 0x18C DAC DRC Smooth filter Gain High Attack Time Coef Register(Default Value: 0x00000002)
Offset: 0x18C
Register Name: AC_DAC_DRC_SFHAT
Bit
R/W
Default/Hex
Description
15:11
/
/
/
10:0
R/W
0x0002
The smooth filter attack time parameter setting, which determine by the
equation that AT = 1-exp(-2.2Ts/tr). The format is 3.24. (5ms)
4.21.5.61. 0x190 DAC DRC Smooth filter Gain Low Attack Time Coef Register(Default Value: 0x00005600)
Offset: 0x190
Register Name: AC_DAC_DRC_SFLAT
Bit
R/W
Default/Hex
Description
15:0
R/W
0x5600
The smooth filter attack time parameter setting, which determine by the
equation that AT = 1-exp(-2.2Ts/tr). The format is 3.24. (5ms)
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