BU9414FV Datasheet, PDF (1/61 Pages) Rohm – 32bit Audio DSP

Digital Sound Processors for FPD TVs
32bit Audio DSP
BU9414FV
No.12083EAT04
●General Description
This LSI is the digital sound processor which made the use digital signal processing for FPD TVs.
DSP of ROHM original is used for the TV sound processor unit, and it excels in cost performance.
There are two digital input systems. An output is a digital output corresponding to 2.1ch.
●Features
■ Digital Signal Processor unit
Word length:
The fastest machine cycle:
Multiplier:
Adder:
Data RAM:
Coefficient RAM:
Sampling frequency:
Master clock :
32bit (Data RAM)
40.7ns (512fs, fs = 48kHz)
32 x 24 → 56bit
32 + 32 → 32bit
256 x 32bit
128 x 24bit
fs = 48kHz
512fs (It is a slave to 256fs of fs = 48kHz, 44.1 kHz, and 32 kHz)
■ Digital signal input (Stereo 2 lines): 16/20/24bit(I2S, Left-Justified, Right-Justified)
Digital signal output (Stereo 2 lines): 16/20/24bit(I2S, Left-Justified, Right-Justified, S/PDIF)
■The sound signal processing function for FPD TVs
Pre-Scaler, DC cut HPF, Channel Mixer, P²Volume(Perfect Pure Volume), BASS, MIDDLE,
TREBLE, Pseudo BASS, Surround, P²Bass, P²Treble, 7Band Parametric EQ,
Master Volume, L/R balance, Post-Scaler, Output signal clipper
(P²Volume, P²Bass, and P²Treble are the sound effect functions of ROHM original.)
●Applications
Flat Panel TVs (LCD, Plasma)
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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2012.03 - Rev.A