BU26154MUV Datasheet, PDF (54/89 Pages) Rohm – High PSRR is attained by built-in regulator

BU26154MUV
Datasheet
Amplifier Volume Fader Control Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x0
0x4a 0x4b
-
-
-
-
-
AVFCON
-
-
-
-
-
0
0
0
This register controls the amplifier volume fade function.
AVFCON[2:0]
These bits are to set the volume change step time of the amplifier volume fade function. The volume changes step by step
with this setting period. Step time is in proportion to sampling frequency (fs) as following table.
AVFCON[2:0]
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
fs conversion
1/fs
4/fs
16/fs
64/fs
256/fs
1024/fs
4096/fs
16384/fs
time(fs=48kHz)
20.8µs
83.3µs
333µs
1.33ms
5.33ms
21.3ms
85.3ms
341.ms
Play Programmable HPF2 CoefL Register
Play Programmable HPF2 CoefH Register
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x0
0x4c 0x4d
PHPF2C0L
0
0
0
0
0
0
0
0
0x0
0x4e 0x4f
-
-
PHPF2C0H
0
0
0
0
0
0
0
0
Play Programmable HPF2 CoefL Register B
Play Programmable HPF2 CoefH Register B
MAPCON
INDEX
b07
b06
b05
b04
b03
b02
b01
b00
R
W
(Initial)
0x2
0x4c 0x4d
PHPF2C0LB
0
0
0
0
0
0
0
0
0x2
0x4e 0x4f
-
-
PHPF2C0HB
0
0
0
0
0
0
0
0
It is the register settings of the programmable high path filter cut-off frequency for the reproduction.
HPF2CSEL bit becomes effective when the register value is equal to "1".
If COEFSEL=0, then the register level of PHPF2C0L, PHPF2C0H is effective.
If COEFSEL=1, then the register level of PHPF2C0LB, PHPF2C0HB is effective.
PHPF2C0L [7:0]/ PHPF2C0LB [7:0]
PHPF2C0H [7:0]/ PHPF2C0HB [7:0]
This sets the cut-off frequency of the programmable high path filter for the reproduction.
Please refer for the setting method.
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TSZ02201-0V1V0R501570-1-2
23.Jun.2014 Rev.001