Resources Contact Us Home
Transparent test method and scan flip-flop

Image Number 11 for United States Patent #8122413.

Logic blocks for IC designs (including gate-array, standard cell, or logic array designs) provide Design-for-Test-enabled flip-flops (DFT-enabled FFs) that inherently insure compliance with DFT rules associated with scan shifting. Test scan-chains are configured by daisy-chaining instances of the logic block in a transparent (invisible) manner to user-designed application circuits, which can be designed without any user-inserted test structures or other regard for DFT considerations. User asynchronous set and reset inputs and all Stuck-At faults on all user pins on these DFT-enabled FFs are observable via capture and scan-out. A first type of these DFT-enabled FFs features addressable control to partition test the application circuit. A second type of these DFT-enabled FFs features integral capture buffering that eliminates the need for partition test, simplifying control logic and reducing the number of test vectors needed.

  Recently Added Patents
Systems and methods for detecting and rejecting defective absorbent articles from a converting line
Towel clip
Automated gate system
Selective facsimile denial
Variable speed traffic control system
Providing multiple decode options for a system-on-chip (SoC) fabric
Multi charged particle beam writing apparatus and multi charged particle beam writing method
  Randomly Featured Patents
Device and method for implementing handoff in mobile communication system
Implants and methods for performing gums and bone augmentation and preservation
Memory having selectable output strength
Method of fabricating metal-insulator-metal capacitor and metal-insulator-metal capacitor manufactured by the method
Approximate zero crossings for frequency determination
Optical code reader head for photographic film
Supported catalyst for olefin polymerization
Method and apparatus for resorting a sequence of sorted strings
Full-duplex transceiver with distributed duplexing function
Method and apparatus for converting data format to a graphics card