Case Study

Audio edge processor for smart microphones

Development of an audio DSP that for cost and form factor reasons required a very compact die and included multiple switchable power domains as well as voltage and frequency scaling.

audio edge processor
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Features
  • Tensilica audio DSP
  • Voltage and frequency scaling down to 0.65v
  • multiple switchable power domains
  • low-power SRAM
  • PLL, oscillator and audio interfaces
Process
  • 28 nm
DFT
  • Full-Scan, MBIST and Boundary-scan
Tool-chain
  • Synopsys: DC, ICC, Primtime, StarRC, Primerail, Formality, Verdi
  • Mentor:  Tessent, Calibre
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