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STA308

December 2002

This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.

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From 32kHz to 192kHz Input Sample Rates

Supported

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Volume Control from 0 to -100dB (0.5 dB steps)

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Variable Digital Gain from 0 to 24dB (0.5dB

steps) with Digital Limiter Functionality and

Variable Attack and Release Time

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I2S Inputs and Outputs

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Individual Channel and Master Gain/

Attenuation

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Individual Channel Mute and Zero Input Detect

Auto-Mute

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Selectable Serial Audio Data Interface

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Bass/Treble Controls

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Channel Mapping of any Input to any

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Active Crossover Capability

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DC Blocking Selectable High-Pass Filter

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Selectable Bass Management on Channel 6

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Selectable Adjacent Channel Mixing Capability

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Channels 7 & 8

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Selectable Clock Input Ratio

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Selectable De-emphasis

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output

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AM Interference Reduction Mode

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I2C Control

DESCRIPTION

The STA308 is a single chip solution for digital audio

processing and control in multi-channel applications.

device, it provides high-quality, high-efficiency, all

digital amplification. The device is extremely versatile

allowing for input of most digital formats including 6.1

channel and 192kHz, 24-bit DVD-Audio.

The internal 24-bit DSP allows for high resolution

processing at all standard input sample frequencies.

Processing includes volume control, filtering, bass

management, gain compression/limiting and PCM

grammable 28-bit biquads for EQ per channel, as

well as bass, treble and DC blocking. External clock-

ing can be provided at 4 different ratios of the input

sample frequency. All sample frequencies are up-

sampled for processing. Each internal processing

channel can receive any input channel, allowing flex-

ibility and the ability to perform active digital cross-

over for powered loudspeaker systems.

The serial audio data interface accepts many differ-

ent formats, including the popular I2S format. Eight

channels of DDX processing are performed.

TQFP64

ORDERING NUMBER: STA308

PRODUCT PREVIEW

MULTICHANNEL DIGITAL AUDIO PROCESSOR WITH DDX™