Scratchpad Memory Optimizations for Digital Signal Processing Applications

Provided by: edaa
Topic: Hardware
Format: PDF
Modern Digital Signal Processors (DSPs) need to support a diverse array of applications ranging from digital filters to video decoding. Many of these applications have drastically different precision and on-chip memory requirements. Moreover, DSPs often employ aggressive Dynamic Voltage and Frequency Scaling (DVFS) techniques to minimize power consumption. However, at reduced voltages, process variations can significantly increase the failure rate of on-chip SRAMs designed with small transistors to achieve high integration density, resulting in low yields. Consequently, the size of transistors in SRAM-cells and cell size needs to be increased to satisfy the target yield. However, this can result in high area overhead since on-chip memories consume a significant portion of the die area.

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