Resources Contact Us Home
Restricting the damaging effects of software faults on test and configuration circuitry

Image Number 6 for United States Patent #6578166.

A system that restricts the damaging effects of software faults that interact with test and configuration circuitry. This test and configuration circuitry includes a scan chain in the form of a serial linkage between memory elements within a circuit, thereby allowing a test input to be serially shifted into the memory elements. The system operates by receiving a test disable signal at the circuit. In response to the test disable signal, the system moves the circuit into a test disable mode, which limits any damaging effects to the circuit caused by shifting the test input into the memory elements in the scan chain. Next, the system shifts the test input into the memory elements in the scan chain. T he system also determines whether the test input will cause damage to the circuit after the test input is completely shifted into the scan chain. If so, the system holds the circuit in the test disable mode so that the test input cannot damage the circuit. If not, the system moves the circuit out of test disable mode, and runs the circuit for at least one clock cycle in order to test the circuit.

  Recently Added Patents
Support member, rotation device comprising such a support and rolling bearing assembly including such a detection device
Video conference
Semiconductor device, semiconductor device design method, semiconductor design apparatus, and program
Detection of procedural deficiency across multiple business applications
3D image generating method, 3D animation generating method, and both 3D image generating module and 3D animation generating module thereof
Mirror elements for EUV lithography and production methods therefor
System and method of detecting and locating intermittent and other faults
  Randomly Featured Patents
Low water activity egg product
Alcohol purification process
Portable electric hammer drill
Method for storing data, method for reading data, apparatus for storing data and apparatus for reading data
Fingerprint sensing device
Method and apparatus for mounting a component to a substrate using an anisotropic adhesive, a compressive cover film, and a conveyor
Orthopaedic cutting guides with retractable saw blade slots
Oxide-coated cathodes for electron tubes
Serine carboxypeptidase hx (SCPhx) and compositions thereof
Process of produciing sintered materials based on Si.sub.3 N.sub.4 /BN using Si-B-N component