Allwinner A20 - Page 187

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 187 / 812
1.13.4.13. BIAS & DA16 CALIBRATION VERIFY REGISTER
Offset: 0x38
Register Name: AC_DAC_CAL
Bit
Read/Write
Default
Description
31:24
/
/
/
23
R/W
0x0
BIASCALIVERIFY.
Bias Calibration Verify 0
0: Calibration
1: Register setting
22:17
R/W
0x20
BIASVERIFY.
Bias Register Setting Data 101101
16:11
R
0x20
BIASCALI.
Bias Calibration Data 100000
10
R/W
0x0
DA16CALIVERIFY.
DA16 Calibration Verify
0: Calibration
1: Register setting 0
9:5
R/W
0x10
DA16VERIFY.
DA16 Register Setting Data 10010
4:0
R
0x10
DA16CALI.
DA16 Calibration Date 10000
1.13.4.14. MIC GAIN & PHONE OUT CONTROL REGISTER
Offset: 0x3c
Register Name: AC_MIC_PHONE_CAL
Bit
R/W
Default
Description
31:29
R/W
0x4
PREG1.
MIC1 pre-amplifier Gain Control
000: 0dB
001: 24dB
010: 27dB
011: 30dB
100: 33dB
101: 36dB
110: 39dB
111: 42dB