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Inversion of scan clock for scan cells

  • US 20060026473A1
  • Filed: 07/29/2004
  • Published: 02/02/2006
  • Est. Priority Date: 07/29/2004
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a scan circuit including at least a first and a second clock domain and a scan chain having a first plurality of scan cells positioned in the first clock domain and a second plurality of scan cells positioned in the second clock domain; and

    a scan clock source, coupled to the scan chain, to provide a first scan clock signal to the first plurality of scan cells and a second scan clock signal to the second plurality of scan cells, with the first and the second scan clock signals have an inverted relationship to each other.

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