T&VS provides end-to-end DFT solution for Consumer SoC 2018-03-01T17:42:19+00:00

Case Studies

T&VS provides end-to-end DFT solution for Consumer SoC


This project involved DFT implementation and execution of a complex Consumer SoC. T&VS’ expertise in development of DFT methodologies for complex designs and track record of  providing a wide range of DFT services from scan insertion to JTAG meant that the customer could rely on T&VS to independently manage the DFT activities for their SoC.

T&VS was tasked with scan implementation, verification and pattern delivery for the design which had a flop count of around 1.5 million. Memory BIST (MBIST) also had to be performed for 400+ memory instances. The stuck at and at-speed coverage analysis targets were set at 99% and 85% respectively.

The T&VS Solution

T&VS implemented a balanced compression ratio scan hybrid coded to generate optimum pattern count. MBIST generation and verification was performed on standalone test benches where different modes like diagnosis, hard repair, soft repair and BIST were verified before plug-in into the SoC.

The T&VS approach enabled the customer to meet the stuck-at and at-speed coverage targets. T&VS was also able to provide assistance to develop test mode constraints for Static Timing Analysis (STA). T&VS automated the scan insertion and pattern generation process to provide quick turnaround for net list updates due to ECO.

Benefits of T&VS Solutions

  • All DFT expertise under single roof to assist STA constraints(TEST modes)till tester assistance.
  • Re-usable automation scripts for scan insertion used pattern generation.
  • Reduction in overall development costs.
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