BU26156RFS Datasheet, PDF (24/95 Pages) Rohm – Monoraul MIC Input with ALC

BU26156RFS
Datasheet
Signal Flow
ADC used signal flow
MALC
From DAC
From
Mic
From
Line
Mic
VOL
LIN
VOL
LALC
Filter Block
DV
MUTE
LIN MIX
ADC
L/R
Select
L/R
HPF1 _Balance
HPF2 *1
Filter
LPF *1
RALC
VOL
RDVOL
*1 exclusive use
Serial
Audio IF
Figure 25.
Name
Mic ALC
MICVOL
LineIN ALC
LINVOL
LIN MIX
ADC
L/R Select
HPF1
L/R Balance
HPF2
Filter
LPF
RALCVOL
Function
Analog Microphone volume and ALC
Analog line input volume and ALC
Mixing the LINE input, MIC input and
outputted signal from DAC
24bit AD Converter
ADC(Lch/Rch) to Audio Bass
Related Register
MIC ALC Control
MIC ALC Max Gain
Analog Input Power Management
Line ALC Control
Line ALC Max Gain
Analog Input Power Management
Line In Control
Analog Path Control
Analog Input Power Management
[ I2SL / I2SR / MONOREC]
Record L/R Balance Volume Control
Setting
0dB to +35.25dB, 0.75dB step
-15 to +0dB, 1dB step
Analog input control.from Mic, Line
and DAC.
Mixing control
ADC Enable/Disable
-6.0dB to 6.0dB(0.1step)
High path filter for DC cut
L/R balance volume control
High pass filter for ADC
Sound filters setting
Programmable LPF setting for ADC
DSP Filter Function Enable
[ RBVOLL / RBVOLR ]
Record L/R Balance Volume Control
DSP Filter Function Enable
High Pass Filter2 Cut-off Control
Sound Effect Mode
DSP Filter Function Enable
EQ Band N Gain Setting
Programmable
EQ Band N Coeffeicient-a0/1
Rec Programmable LPF Setting
Rec Programmable LPF Cutoff Coef
HPF Enable/Disable
-6.0dB to 6.0dB(0.1step)
HPF Enable/DIsable setting
order setting
Cut-off frequency setting
Sound effect mode setting.
Each filters Enable/Disable.
Each filter gain settings.
Each sound effects characteristics
setting
LPF Enable/DIsable setting
Order setting.
Cut-off frequency setting
Digital Boost Volume for ADC
Recording Digital Boost Volume
Register
-12.000d to 35.625dB(0.375Step)
RDVOL
Digital attenuator and fader for ADC
Record Digital Attenuator Control
Digital Volume Control
Function Enable
Mixer & Volume Control
*Filter Block can be used for either ADC path or DAC path.
For example, if Filter Block is connected to DAC, ADC is not effected by filter.
Regarding the detail of register setting, please refer to selection of [SEMODE] register.
Volume setting -71.5dB to 0dB
(0.5dBstep)
Fader enable/disenable setting
(working together DVMUTE)
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TSZ22111・15・001
24/92
TSZ02201-0V1V0E502570-1-2
Jul.1.2014 Rev.001