The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Apr. 17, 1995
James L Broseghini, Austin, TX (US);
John A Langan, Austin, TX (US);
Thomas J Poterek, Austin, TX (US);
Motorola Inc., Shaumburg, IL (US);
Abstract
A data processor (12) has built-in circuitry for scan testing certain circuits. The data processor generates and stores test vectors in a memory system (22) normally used for data and instruction storage. These vectors can be much larger than the size of any scan chain. During testing, the stored vectors are automatically routed to the circuits to be tested (36, 38) and the outputs compared to a benchmark. The data processor (12) need not pause to generate additional test vectors. Therefore, the data processor (12) can use a single circuit to generate scan data and compress scan results with minimal timing or size implications.