The TAS3308 is a highly-integrated audio system-on-chip (SOC) consisting of a fully-programmable 48-bit digital audio processor, 10:1 stereo analog input MUX, stereo ADC, six PWM output channels, and other analog functionality. The TAS3308 is programmable with the graphical PurePath Studio™ and suite of DSP code development software. PurePath Studio is a highly intuitive, drag-and-drop development environment that minimizes software development effort while allowing the end user to utilize the power and flexibility of the TAS3308"s digital audio processing core.
TAS3308 processing capability includes speaker equalization and cross over, 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 TI royalty-free algorithms.
The TAS3308 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.
A stereo 100-dB DNR ADC and six 105-dB DNR PWM output channels ensure that high quality audio is maintained through the whole signal chain. The PWM outputs utilize TI"s PurePath Digital PWM technology and seamlessly interface with TI"s extensive line of PWM input class D audio amplifiers.
Digital Audio Processor
Fully Programmable With the Graphical, Drag-and-Drop
PurePath Studio™ Software Development Environment
135-MHz Operation 48-Bit Data Path With 76-Bit Accumulator
Hardware Single-Cycle Multiplier (28 × 48)
Five Simultaneous Operations Per Clock Cycle
Usable 1k Data RAM Words (48 Bit), Usable 1k Coefficient RAM (28 Bit)
Usable 2.8k Program RAM
360 ms at 48 kHz, 17k Words 24-Bit Delay Memory
Slave Mode Fs is 32.44.1 and 48 kHz With Auto Sample Rate Detection
Master Mode Fs is 48 kHz
Analog Audio Input/Output
10:1 Stereo Analog Input MUX
Stereo Analog Pass-Through Channel
Stereo, Single-Ended ADC
(100 dB DNR Typical)
Six Differential PWM Outputs
(105 dB DNR Typical)
PurePath™ Digital Technology Minimizes Pop/Click
Fourth Order Chaotic Noise Shaper With Non-Linear Correction
Digital Audio Input/Output
Three Synchronous Serial Audio Inputs (Six Channels)
Two Synchronous Serial Audio Outputs (Four Channels)
Input and Output Data Formats: 16-, 20-, or 24-Bit Data Left, Right,
