Datasheet > BU9408KS2-E2

BU9408KS2-E2

更新时间： 2024-09-30 01:12:47

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
57页	1201K
描述
32bit Audio DSP with Built-in 4ch DAC and ASRC

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数据手册

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BU9408KS2-E2 数据手册

Digital Sound Processors for FPD TVs

32bit Audio DSP with Built-in 4ch

DAC and ASRC

BU9408KS2

No.12083EAT02

●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. A selection input of two

lines is possible from four digital inputs. An asynchronous sampling rate converter(ASRC) is built in one line. Three digital

outputs are built in.

Two audio DA converters are built in.

●Features

■Digital Signal Processor unit

Word length:

32bit (Data RAM)

The fastest machine cycle: 40.7ns (512fs, fs = 48kHz)

Multiplier:

Adder:

Data RAM:

32 x 24 → 56bit

32 + 32 → 32bit

256 x 32bit

Coefficient RAM:

Sampling frequency:

Master clock :

128 x 24bit

fs = 48kHz

512fs（24.576MHz,fs=48kHz）

■Digital signal input (Stereo4lines):

16/20/24bit (I²S, Left-Justified, Right-Justified)

Digital signal output (Stereo 3 lines):

16/20/24bit (I²S, Left-Justified, Right-Justified, S/PDIF)

■.Asynchronous sampling rate converter

（one line at stereo）：32kHz/44.1kHz/48kHz/88.2kHz/96kHz/176.4kHz/192kHz → 48kHz

■Audio DAC：One stereo output

24bit 8 x Over-sampling digital filter + 1 bit delta sigma DAC

S/N：

96dB

THD+N： 0.005%（Sine-wave 1kHz,0dB）

■Audio 16bit DAC：One stereo output

24bit 8 x Over-sampling digital filter + Audio 16bit DAC

S/N：

90dB

THD+N： 0.03%（Sine-wave 1kHz,0dB）

■The sound signal processing function for FPD TVs

Pre-Scaler, DC cut HPF, Channel Mixer, P²Volume(Perfect Pure Volume), BASS, MIDDLE,

TREBLE, Simulated-Stereo, 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

2012.03 - Rev.A

1/53

12 3 4 5 6 7...57

中文翻译

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