Allwinner A20 - Page 188

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 188 / 812
Offset: 0x3c
Register Name: AC_MIC_PHONE_CAL
Bit
R/W
Default
Description
28:26
R/W
0x4
PREG2.
MIC2 pre-amplifier Gain Control
000: 0dB
001: 24dB
010: 27dB
011: 30dB
100: 33dB
101: 36dB
110: 39dB
111: 42dB
25:8
/
/
/
7:5
R/W
0x3
PHONEOUTG.
PHONEOUT Gain Control
000: -4.5dB
001: -3.0dB
010: -1.5dB
011: 0dB
100: 1.5dB
101: 3dB
110: 4.5dB
111: 6dB
4
R/W
0
PHONEOUTEN.
PHONEOUT enable
0: disable
1: enable
3
R/W
0
PHONEOUTS3.
MIC1 Boost stage to Phone out mute
0: Mute
1: Not mute
2
R/W
0
PHONEOUTS2.
MIC2 Boost stage to Phone out mute
0: Mute
1: Not mute
1
R/W
0
PHONEOUTS1.
Right Output mixer to Phone out mute