Redundant core testing on the cell BE microprocessor

@article{Iverson2010RedundantCT,
  title={Redundant core testing on the cell BE microprocessor},
  author={David Iverson and Dan Dickinson and John Masson and Christina Newman-LaBounty and Daniel Simmons and William Tanona},
  journal={2010 IEEE International Test Conference},
  year={2010},
  pages={1-6}
}
The Cell Broadband Engine chip, used in Sony's PS/3 console, contains 8 identical processing cores. As only 7 of these are used in the PS/3™ application, this provides an opportunity for yield enhancement through use of this “spare” core. We are able to enjoy an 11% to 17% yield increase with this scheme, but its implementation drives about 20% of our test time and significant design and test complexity. 

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Key Quantitative Results

  • Note that the overall productivity of the theoretical 7-SPE BE version is better only at very low D0 values, with the crossover point at approximately 90% yield.

Citations

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Testing Chips With Spare Identical Cores

  • IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
  • 2013
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Test access mechanism for chips with spare identical cores

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CITES METHODS & BACKGROUND
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