This paper introduces the hardware accelerators in the Analog Devices SHARC ADSP-2146x processor, which can implement widely used signal processing operations such as finite impulse response (FIR), infinite impulse response (IIR), and fast Fourier transform (FFT). These accelerators offload the core processor and have the potential to more than double the computational throughput of the processor. The paper uses their application in next-generation audio systems as an example to illustrate the accelerators.
This application note introduces the hardware accelerators included in the Analog Devices SHARC ADSP-2146x processor, which are designed to implement widely used signal processing operations such as FIR, IIR, and FFT. These dedicated peripherals offload the main processor, significantly increasing computational throughput for complex tasks like audio processing and room equalization.
| Processor Clock Rate | 450 MHz |
|---|---|
| On-chip Memory | 5 Mb |
| Peak Core MAC Rate | 900 MMAC/sec |
| Peripheral Clock Rate | 225 MHz |
| Accelerator MAC Units | Four parallel MACs |
The hardware accelerators implement FIR filters, IIR filters, and FFT operations.
They offload the main processor, allowing it to perform general-purpose tasks while the accelerators handle computationally intensive operations.