A dual mode RTOS for convergent processing: Rick Gentile and Tom Barrett describe how a different approach should be made to using an RTOS on processors that combine both DSP and RISC/MCU designs

摘要

Today's embedded applications are rapidly evolving. Traditional DSP applications are adding networking and other control functionality. At the same time, the typical MCU control application will often include streaming media processing and other DSP functions. An emerging solution for this new class of 'hybrid' application is the Convergent Processor. This design approach combines both DSP and RISC/micro-controller capabilities into a single, unified architecture. The convergent processor can operate solely a DSP engine, or be totally dedicated to a control application, or any point in between. This allows designers of everything from portable devices to industrial control to automotive infotainment to take advantage of lower costs and a smaller footprint, since they can often replace two devices - RISC & DSP - with a single convergent processor. The Blackfin processor from Analog Devices is a prime example of such a convergent device.