TAS3218 Status: ACTIVE

Product Information

Features

• Audio Input/Output
  • 3 Synchronous Serial Audio Inputs
    (6 Channels)
  • 2 Synchronous Serial Audio Outputs
    (4 Channels)
  • Input and Output Data Formats: 16-, 20-, or 24-Bit Data Left, Right ,and I²S
  • SPDIF Transmitter
  • 64 Fs Bit Clock Rate
  • 512 Fs XTAL Input for Master Mode Clock Rates
  • 256 Fs MCLKIN for Slave Mode Clock Rates
  • 10 Multiplexed Stereo Analog Inputs Selectable into 1 Stereo ADC and 3 Stereo Line Outputs
  • High Quality DNR: 93 dB (Typical) ADC Channel Performance (2 Channels)
  • 3 Single-Ended Analog Stereo Line Driver Outputs With 1 of 11 Selectable Input, 10 k
  • 100-pF Drive Capability (Typical Output Level: 1 Vrms)
  • 3 Stereo Audio DACs
  • High-Quality DNR: 97 dB (Typical) DAC Channel Performance (6 Channels)
  • Stereo Headphone Amplifier 24 mW Power Output into 16, 100 pF
• Audio Digital Signal Processor
  • Programmable Functionality
  • 135-MHz Operation
  • 48-Bit Data Path With 76-Bit Accumulator
  • Two Memory Loads and One Memory Store Per Cycle
  • Usable 768 Data RAM Words (48-Bit), Usable 1K Coefficient RAM (28-Bit)
  • Usable 2.5K Program RAM
  • 360 ms at 48 kHz, 17408 Words 24-Bit Delay Memory for Video Sync
• System Control Processor
  • Embedded 8051 WARP Microprocessor
  • Programmable Using Standard 8051 C Compilers
  • 16K Words of Program RAM (8-Bit)
  • 2048 Words of Data RAM (8-Bit)
  • 256 Words of Internal RAM (8-Bit)
  • Programmable Functionality
• General Features
  • Easy-to-Use Control Interface
  • I²C Serial Control Master and Slave Interface
  • Control Interface Operational Without External MCLK Input
  • Single 3.3-V Power Supply
  • Integrated Regulators
  • 100-Pin TQFP (PZP) Package

PowerPAD Is a trademark of Texas Instruments.

Description

TAS3218 is an audio system-on-a-chip (SOC) designed for digital television audio systems and mini/micro component applications. TAS3218 has a programmable audio DSP that preserves high-quality audio by using a 48-bit data path, 28-bit filter coefficients, and a single cycle 28 x 48-bit multiplier. The programmability feature allows users to customize features in the DSP RAM.

The TAS3218 is composed of seven functional blocks. Clock and serial data interfaceAnalog input and output M8051 WARP controller, serial control interface, and device controlAudio DSP digital audio processingPower supply Internal references

Figure 1 shows the functional structure of the TAS3218.