SN32F100 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 151
Version 1.9
00001: -12dB
……
01001: 0dB
……
11110: +31.5dB
11111: +33dB
13.7.19 ADC Setting 20 register (ADC_SET20)
Address Offset: 0x670
Bit
Name
Description
Attribute
Reset
31:8
Reserved
R
0
7:0
VOL_MUTE_POD
The updating period for Digital Volume attenuation at the normal/mute
mode when AGC is on.
Bit[7:4]: for normal mode.
Bit[3:0]: for mute mode.
Fs : Sampling rate
0000: 1/Fs x 2^(0)
0001: 1/Fs x 2^(1)
…….
1110: 1/Fs x 2^(14)
1111: 1/Fs x 2^(15)
The volume update when mode transition. This is mainly for avoiding large
variation of analog gain setting during the transition of normal mode and
mute mode.
R/W
0x12
13.7.20 ADC Setting 21 register (ADC_SET21)
Address Offset: 0x6B0
Bit
Name
Description
Attribute
Reset
31:8
Reserved
R
0
7
ADC_EN
ADC power-on enable, active High
R/W
0
6
Reserved
R
0
5
MICBT_EN
MICBOOST power-on enable, active High
R/W
0
4
PGA_EN
PGA power-on enable, active High
R/W
0
3:0
Reserved
R
0
13.7.21 ADC Setting 22 register (ADC_SET22)
Address Offset: 0x6C0
Bit
Name
Description
Attribute
Reset
31:4
Reserved
R
0
3
IREF_EN
IREF circuit enable, active High
R/W
0
2
VREF_EN
VREF circuit enable, active High
R/W
0
1
MICB_EN
Microphone bias enable, active High
R/W
0
0
CK_EN
CKGEN enable, active High
R/W
0
13.7.22 ADC Setting 23 register (ADC_SET23)
Address Offset: 0x6D0
Bit
Name
Description
Attribute
Reset
31:5
Reserved
R
0
4
SEL_MICB
Microphone Bias Output select
0: 0.8*VA
1: 0.9*VA
R/W
0
3
Reserved
R
0
2
SEL_MIC
P1.7/MIC_P and P1.8/MIC_N function selection
0: General purpose IO
1: Microphone Differential input when ADC is enabled
R/W
0
1
Reserved
R
0
0
SEL_MIX_MIC
Microphone input path to mixer enable
R/W
1
Содержание SN32F107
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