BU26154MUV Datasheet, PDF (68/89 Pages) Rohm – High PSRR is attained by built-in regulator

BU26154MUV
Datasheet
Zero Detection Setting Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x0
0xdc 0xdd
ZDTIME
-
-
-
ZDEN
0
0
0
0
-
-
-
0
This register controls zero detection for low power consumption mode. When zero detection is enable and "0" data are
inputted in succession, a part of internal clock and speaker amplifier goes to disable to operate under low power
consumption. Controlling a zero detection function for low power consumption mode movement, and enabling this function,
some internal clocks stop it, and a speaker amplifier is disabled. When data, not 0 data, is input, the disable block starts
operation again.
In addition, the zero detection is effective only speaker amplifier playing mode. In the other modes, please set ZDEN bit in
"0".
ZDEN
Enables/Disables the zero detection function.
ZDEN
Explanation
0x0
A zero detection function is disabled.
0x1
A zero detection function is enabled.
ZEROTIM
Sets "0" detection period. When "0" continues more than the following set points in succession with LCH/RCH, it becomes
low power consumption mode.
ZEROTIM
Explanation
0x00
256/fs
0x01
512/fs
0x02
1024/fs
0x03
2048/fs
0x04
4096/fs
0x05
8192/fs
0x06
16384/fs
0x07
32768/fs
0x08
65536/fs
0x09
131072/fs
0x0a
262144/fs
0x0b to 0x0f
This is prohibited
from setting
MIC select Control Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x0
0xe8 0xe9
-
-
-
-
-
-
MIN2EN MIN1EN
-
-
-
-
-
-
0
1
This register sets microphone input.
MIN1EN
Using MIN1 terminal in analog MIC.
Setting
Explanation
0
Does not use MIN1 terminal.
1
Use MIN1 terminal.
MIN2EN
Using MIN2 terminal in analog MIC. Please set it in "0" when in the differential mode.
Setting
Explanation
0
Does not use MIN2 terminal.
1
Use MIN2 terminal.
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TSZ02201-0V1V0R501570-1-2
23.Jun.2014 Rev.001