BU26156RFS Datasheet, PDF (48/95 Pages) Rohm – Monoraul MIC Input with ALC

BU26156RFS
Datasheet
Zero Cross Comparator Power Management Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x0
0x2e 0x2f
-
-
-
-
-
-
ZCEN
-
-
-
-
-
-
-
0
-
This register is to set ON and OFF of zerocross function about refreshing PLAYVOL setting by PALC controller.
ZCEN
The zero cross is applied to refreshing PLAYVOL settings when zero cross detection operation is effective.
ZCEN
Description
0
Zerocross detection operation is invalid.
The gain setting of PLAYVOL is immediately reflected when the settings are changed.
1
Zerocross detection operation is effective.
The gain setting of PLAYVOL is reflected after zerocross detection.
BEEPIN Amp Control / MICBIAS Voltage Control Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x0
0x30 0x31
-
-
-
BPINCON
TEST3
MICBCON18S
-
-
-
0
0
1
0
0
This register controls voltage value of microphone bias, and controls BEEPIN amplifier and for shipment test.
MICBCON18S[1:0]
These bits are to set the MICBIAS. Set the MICBIAS voltage less than HVDD x 0.85.
MICBCON18S
Output Voltage (the case of REGOUT =1.8V)
0x0
1.50V
0x1
2.00V
0x2
2.50V
0x3
3.00V
TEST3
This bit is for shipment test. Don’t change from initial value.
TEST3
Description
1
Test register. Use by 1
BPINCON[1:0]
These bits
BPINCON
Output Voltage (the case of REGOUT =1.8V)
0x0
BEEPIN amplifier power down
0x1
Prohibited
0x2
BEEPIN amplifier power up at normal mode
0x3
BEEPIN amplifier power up at high speed power up mode
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TSZ22111・15・001
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TSZ02201-0V1V0E502570-1-2
Jul.1.2014 Rev.001