BU9409FV_12 Datasheet, PDF (1/58 Pages) Rohm – 32bit Audio DSP

Digital Sound Processors for FPD TVs
32bit Audio DSP
BU9409FV
No.12083EAT03
●General Description
It is a digital audio sound processor used for thin TV. Digital signal processor is Rohm original DSP only for TV
sound signal processing, and it’s cost performance is excellent. Digital inputs are two lines. Output is digital output
corresponding to 2.1ch or play of sub-voice L/R signal.
●Features
■DSP Part
Data width:
32bit (Data RAM)
Quickest machine cycle:40.7ns (512fs,fs=48kHz)
Multiplier:
32 x 24 → 56bit
Adder:
32 + 32 → 32bit
Data RAM:
256 x 32bit
Coefficient RAM:
128 x 24bit
Sampling frequency: fs=48kHz
Master clock:
512fs
（24.576MHz,fs=48kHz）
■Input output I/F
2 stereo digital signal input port : 16/20/24bit (I2S,left-align,right-align)
2 stereo digital signal output port : 16/20/24bit (I2S,left-align,right-align), S/PDIF output
■Sound signal processing function for TV
Prescaler, DC cut HPF, channel mixer, P²Volume(Perfect Pure Volume),BASS,MIDDLE,
TREBLE, pseudo stereo, surround, P²Bass, P²Treble, 7 band parametric equalizer,
master volume, L/R balance, postscaler, output clipper, subwoofer output processing
（P²Volume，P²Bass，P²Treble are Rohm original sound effect functions.）
●Applications
Flat Panel TVs (LCD, Plasma)
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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2012.03 - Rev.A