A new scalable DSP architecture for system on chip (SoC) domains

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Abstract
The ongoing advances in semiconductor technology are the enabler for complete system on chip (SoC) solutions. In this SoC domain digital signal processors (DSPs) are employed to carry out software driven digital signal processing tasks. Although DSPs could still be modified in the SoC domain, they are mainly employed as fixed DSP cores. Possible adaptations to the embedding system cannot be carried out. Thus, our work is targeted to design expandable DSP architectures. To achieve this expandability, we designed a sliced DSP architecture. Here, the number of slices can be adapted towards the system's needs. Specific system requirements can be achieved by adding dedicated datapaths to these slices. With this approach one magnitude of order in performance boost can be achieved, which creates new demands for I/O processing. Thus, within our DSP architecture we integrated a dedicated I/O processor. We present this new scalable DSP architecture, tools to map algorithms onto this DSP architecture, and the concept of our new I/O controller. These technologies allow one to easily adapt this DSP architecture to different system requirements.

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