STA306 Datasheet, PDF (1/33 Pages) STMicroelectronics – MULTICHANNEL DIGITAL AUDIO PROCESSOR WITH DDX

STA306
MULTICHANNEL DIGITAL AUDIO PROCESSOR WITH DDX™
PRODUCT PREVIEW
s 6 DDX^TM Channels Capability (24 bit)
s From 32kHz to 192kHz Input Sample Rates
Supported
s Volume Control from 0 to -127 dB (0.5 dB steps)
s Variable Digital Gain from 0 to 24dB (0.5dB
steps) with Digital Limiter Functionality and
Variable Attack and Release Time
s I2S Inputs and Outputs
s Individual Channel and Master Gain/
Attenuation
s Individual Channel Mute and Zero Input Detect
Auto-Mute
s Selectable Serial Audio Data Interface
s Bass/Treble Controls
s Channel Mapping of any Input to any
Processing/DDX^TM Channel
s Active Crossover Capability
s DC Blocking Selectable High-Pass Filter
s Selectable Bass Management on Channel 6
s Selectable Adjacent Channel Mixing Capability
s Selectable Clock Input Ratio
s Selectable De-emphasis
s Selectable DDX^TM Ternary, or Binary PWM
output
s AM Interference Reduction Mode
s I2C Control
TQFP64
ORDERING NUMBER: STA306
DESCRIPTION
The STA306 is a single chip solution for digital audio
processing and control in multi-channel applications.
It provides output capabilities for DDX^TM (Direct Digi-
tal Amplification). In conjunction with a DDX^TM power
device, it provides high-quality, high-efficiency, all
digital amplification. The device is extremely versatile
allowing for input of most digital formats including
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
and DDX^TM outputs. Filtering includes five user-pro-
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. STx-
channels of DDX processing are performed.
October 2003
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
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