Digital Audio Processor - TAS3108

TAS3108 (NRND)

Digital Audio Processor


Not Recommended for New Designs (NRND)

Replaced By TMS320C5532– The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.


The TAS3108 and TAS3108IA are fully programmable high-performance audio processors. The devices use an efficient, custom, multi-instruction programming environment optimized for digital audio processing algorithms. The TAS3108/TAS3108IA architecture provides high-quality audio processing by using a 48-bit data path, 28-bit filter coefficients, and a single-cycle 28 × 48-bit multiplier with a 76-bit accumulator. An embedded 8051 microprocessor provides algorithm and data control for the TAS3108/TAS3108IA. The TAS3108 is the commercial version intended for home audio and other commercial applications. The TAS3108IA is the automotive version that is qualified for use in automotive applications.


  • 8 channel Programmable Audio Digital Signal Processor (DSP)
  • 135-MHz Maximum Speed, >2800 Processing Cycles Per Sample at 48 kHz
  • Sample Rates of 32 kHz to 192 kHz
  • 48-Bit Data Path and 28-Bit Coefficients
  • Single-Cycle, 76-Bit Multiply Accumulate
  • Five Simultaneous Operations Per Clock Cycle
  • 1022 Words of 48-Bit Data Memory
  • 1022 Words of 28-Bit Coefficient Memory
  • 3K Words of 54-Bit Program RAM
  • 5.88K Words of 24-Bit Delay Memory (122.5 ms at 48 kHz)
  • 15 Stereo/TDM Data Formats
  • Independent Input/Output Data Formats
  • 16-, 20-, 24-, and 32-Bit Word Sizes
  • 64-fS, 128-fS, 192-fS, and 256-fS SCLK to Support Discrete 4 channel TDM, 6 channel TDM, and 8 channel TDM Data-Transfer Formats
  • Two I2C Ports for Slave or Master Download
  • Soft Volume Controller
  • Dither Generator
  • Efficient log2/2x Estimator
  • Single 3.3-V Power Supply
  • 38-Pin Thin Shrink Small-Outline Package (TSSOP) (DCP)
  • AEC-Q100 (Grade 2: –40°C to 105°C) Compliant for Automotive Applications (TAS3108IA)
  • Applications
    • Automotive Sound Systems
    • Digital Televisions
    • Home Theater Systems
    • Mini-Component Audio

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