TAS3204

音频DSP与模拟接口 AUDIO DSP WITH ANALOG INTERFACE

The is a highly-integrated audio system-on-chip SOC consisting of a fully-programmable, 48-bit digital audio processor, a 3:1 stereo analog input MUX, four ADCs, four DACs, and other analog functionality. The TAS3204 is programmable with the graphical PurePath Studio™ suite of DSP code development software. PurePath Studio is a highly intuitive, drag-and-drop environment that minimizes software development effort while allowing the end user to utilize the power and flexibility of the TAS3204’s digital audio processing core.

TAS3204 processing capability includes speaker equalization and crossover, volume/bass/treble control, signal mixing/MUXing/splitting, delay compensation, dynamic range compression, and many other basic audio functions. Audio functions such as matrix decoding, stereo widening, surround sound virtualization and psychoacoustic bass boost are also available with either third-party or royalty-free algorithms.

The TAS3204 contains a custom-designed, fully-programmable 135-MHz, 48-bit digital audio processor. A 76-bit accumulator ensures that the high precision necessary for quality digital audio is maintained during arithmetic operations.

Four differential 102 dB DNR ADCs and four differential 105 dB DNR DACs ensure that high quality audio is maintained through the whole signal chain as well as increasing robustness against noise sources such as TDMA interference.

The TAS3204 is composed of eight functional blocks:

1. Clocking System

2. Digital Audio Interface

3. Analog Audio Interface

4. Power supply

5. Clocks, digital PLL

6. I2C control interface

7. 8051 MCUcontroller

8. Audio DSP – digital audio processing

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Digital Audio Processor

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Fully Programmable With the Graphical, Drag-and-Drop PurePath Studio™ Software Development Environment

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135-MHz Operation

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48-Bit Data Path With 76-Bit Accumulator

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Hardware Single-Cycle Multiplier 28 × 48

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Five Simultaneous Operations Per Clock Cycle

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Usable 768 Words Data RAM 48 Bit, Usable 1k Coefficient RAM 28 Bit

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Usable 2.5K Program RAM

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122 ms at 48 kHz, 5.8k Words 24-Bit Delay Memory

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Slave Mode Fs is 44.1 kHz and 48 kHz

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Master Mode Fs is 48 kHz

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Analog Audio Input/Output

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Two 3:1 Stereo Analog Input MUXes

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Four Differential ADCs 102 dB DNR, Typical

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Four Differential DACs 105 dB DNR, Typical

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Digital Audio Input/Output

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Two Synchronous Serial Audio Inputs Four Channels

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Two Synchronous Serial Audio Outputs Four Channels

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Input and Output Data Formats: 16-, 20-, or 24-Bit Data Left, Right, and I2S

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System Control Processor

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Embedded 8051 WARP Microprocessor

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Programmable Using Standard 8051 C Compilers

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Up to Four Programmable GPIO Pins

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General Features

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Two I2C Ports for Slave or Master Download

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Single 3.3-V Power Supply

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Integrated Regulators

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APPLICATIONS

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MP3 Player/Music Phone Docks

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Speaker Bars

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Mini/Micro-Component Systems

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Musical Instruments

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Speaker Equalization

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Studio Monitors

PurePath Studio Is a trademark of Texas Instruments