AS3525-A/-B C22O22
Data Sheet, Confidential
7.4.12
Audio Settings
7.4.12.1 Register Description
Table 134 AudioSet_1 Register
Name
Base
Default
0x00
AudioSet_1
I2C audio master
First Audio Set Register
This register is reset at a DVDD-POR.
Offset: 0x14
Bit
Bit Name
ADC_on
Default
Access
Bit Description
7
0
0
0
0
0
0
0
0
R/W
0: ADC disabled
1: ADC for recording is enabled
0: Summing / Mixing stage is disabled (no audio output)
1: Summing / Mixing stage is enabled
0: DAC disabled
6
5
4
3
2
1
0
SUM_on
DAC_on
LOUT_on
LIN2_on
LIN1_on
MIC2_on
MIC1_on
R/W
R/W
R/W
R/W
R/W
R/W
R/W
1: DAC enabled
0: Line output disabled
1: Line output enabled
0: Line input 2 disabled
1: Line input 2 enabled
0: Line input 1 disabled
1: Line input 1 enabled
0: Microphone input 2 disabled
1: Microphone input 2 enabled
0: Microphone input 1 disabled
1: Microphone input 1 enabled
Table 135 AudioSet_2 Register
Name
Base
Default
0x00
AudioSet_2
I2C audio master
Second Audio Set Register
This register is reset at a DVDD-POR.
Offset: 0x15
Bit
Bit Name
BIAS_off
Default
Access
Bit Description
7
0
0
0
R/W
0: bias enabled
1: bias disabled, for power saving in non audio mode
0: add dither to the DAC audio stream
6
DITH_off
R/W
R/W
R/W
1: no dither added
5
AGC_off
0: automatic gain control for summing stage enabled
1: automatic gain control for summing stage disabled
Bias current reduction settings for DAC:
4:3
IBR_DAC<1:0>
00
00: 0%
01: 25%
10: 40%
11: 50%
2
LSP_LP
0
R/W
R/W
Low power mode for speaker output:
0: speaker output driver set for 4Ohm to 16Ohm loads
1: speaker output driver set for 16Ohm or larger loads
Bias current reduction settings for speaker output:
1:0
IBR_LSP<1:0>
00
00: 0%
01: 17%
10: 34%
11: 50%
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