BU26156RFS Datasheet, PDF (61/95 Pages) Rohm – Monoraul MIC Input with ALC

BU26156RFS
Datasheet
DSP Filter Function Enable Register
MAPCON
0x0
INDEX
R
W
0x66 0x67
b07
(Initial)
HPF2OD
0
b06
EQ4EN
0
b05
EQ3EN
0
b04
EQ2EN
0
b03
EQ1EN
0
b02
b01
b00
EQ0EN HPF2EN HPF1EN
0
0
1
This register is to set ON or OFF for DSP filtering function.
HPF1EN
This bit is to set ON or OFF of a first-order high pass filter for DC cut. Do not change this bit during operation of the recording
(0x13/0x14: RECPLAY=0x1, 0x3, or 0x7). If this bit is changed, the noise may be generated.
HPF1EN
Description
0
DC cut first-order high pass filter OFF
1
DC cut first-order high pass filter ON
HPF2EN
This bit is to set ON or OFF of a second-order high pass filter for noise cut. ($13h/$14h: RECPLAY=1 or 2). If this bit is
changed, the noise may be generated.
HPF2EN
Description
0
Noise cut second-order high pass filter OFF
1
Noise cut second-order high pass filter ON
EQ0EN
This bit is to set ON or OFF of equalizer band 0. In case of changing this bit during recording and playback operation
(0x13/0x14: RECPLAY=0x1, 0x2, 0x3, or 0x7), enables digital volume fade function (0x68/0x69: DVFADE=1) and then
change the gain to 0dB.
EQ0EN
Description
0
equalizer band 0 disable
1
equalizer band 0 enable
EQ1EN
This bit is to set ON or OFF of equalizer band 1. In case of changing this bit during recording and playback operation
(0x13/0x14: RECPLAY=0x1, 0x2, 0x3, or 0x7), enables digital volume fade function (0x68/0x69: DVFADE=1) and then
change the gain to 0dB.
EQ1EN
Description
0
equalizer band 1 disable
1
equalizer band 1 enable
EQ2EN
This bit is to set ON or OFF of equalizer band 2. In case of changing this bit during recording and playback operation
(0x13/0x14: RECPLAY=0x1, 0x2, 0x3, or 0x7), enables digital volume fade function (0x68/0x69: DVFADE=1) and then
change the gain to 0dB.
EQ2EN
Description
0
equalizer band 2 disable
1
equalizer band 2 enable
EQ3EN
This bit is to set ON or OFF of equalizer band 3. In case of changing this bit during recording and playback operation
(0x13/0x14: RECPLAY=0x1, 0x2, 0x3, or 0x7), enables digital volume fade function (0x68/0x69: DVFADE=1) and then
change the gain to 0dB.
EQ3EN
Description
0
equalizer band 3 disable
1
equalizer band 3 enable
EQ4EN
This bit is to set ON or OFF of equalizer band 4. In case of changing this bit during recording and playback operation
(0x13/0x14: RECPLAY=0x1, 0x2, 0x3, or 0x7), enables digital volume fade function (0x68/0x69: DVFADE=1) and then
change the gain to 0dB.
EQ4EN
Description
0
equalizer band 4 disable
1
equalizer band 4 enable
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TSZ22111・15・001
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TSZ02201-0V1V0E502570-1-2
Jul.1.2014 Rev.001