Method for race prevention and a device having race...

Details Method for race prevention and a device having race... Method for race prevention and a device having race...

2011-05-10

2011-05-10

Britt, Cynthia (Department: 2117)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital logic testing

C714S735000

Reexamination Certificate

active

07941716

ABSTRACT:
A method for race prevention includes: selectively providing data or scan data to a input latching logic, activating the input latching logic for a first scan mode activation period, introducing a substantial time shift between the first scan mode activation period and a second scan mode activation period, and activating a output latching logic, connected to the input latching logic for a second scan mode activation period. A device having race prevention capabilities includes: an interface logic, a input latching logic, a output latching logic and a control logic. The interface logic is adapted to selectively provide data or scan data to the input latching logic. The control logic is adapted to introduce a substantial time difference between an end point of a first scan mode activation period of the input latching logic and a start point of a second scan mode activation period of the output latching logic.

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