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DESCRIPTION

The STA304 Digital Audio Processor is a single chip device implementing end to end digital solution for audio application. In conjunction with STA500 power bridge it gives the full digital DSP-to-power high quality chain with no need for audio Digital-to-Analog converters between DSP and power stage.

■ END TO END DIGITAL AUDIO INTEGRATED

SOLUTION

■ · DSP Functions:

- DIGITAL VOLUME CONTROL

- SOFT MUTE

- BASS and TREBLE

- PARAMETRIC EQ PER CHANNEL

- BASS MANAGEMENT FOR SUBWOOFER

- AUTO MUTE ON ZERO INPUT DETECTION

■ 4+1 DIRECT DIGITAL AMPLIFICATION

(DDX?) OUTPUT CHANNELs

■ 6 CHANNELs PROGRAMMABLE SERIAL

OUTPUT INTERFACE (by default I2S)

■ 4 CHANNELs PROGRAMMABLE SERIAL

INPUT INTERFACE (by default I2S)

■ STEREO S/PDIF INPUT INTERFACE

■ Intel AC97 LINK (rev. 2.1) INPUT INTERFACE

FOR AUDIO AND CONTROL

■ ON CHIP AUTOMATIC INPUT SAMPLING

FREQUENCY DETECTION

■ 100 dB SNR SAMPLE RATE CONVERTER

(1KHz SINUSOIDAL INPUT)

■ I2C CONTROL BUS

■ LOW POWER 3.3V CMOS TECHNOLOGY

■ EMBEDDED PLL FOR INTERNAL CLOCK

GENERATION (1024x48 kHz = 49.152 MHz)

■ 24.576 MHz EXTERNAL INPUT CLOCK OR

BUILT-IN INDUSTRY STANDARD XTAL

OSCILLATOR.