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. 15, 2010
Filed:
Jan. 24, 2007
Paul Armagnat, Seyssinet, FR;
Paul Armagnat, Seyssinet, FR;
STMicroelectronics S.A., Montrouge, FR;
Abstract
An electronic circuit includes a group of devices which facilitate scan testing of at least one part of the electronic circuit. Those devices include a scan test device. The circuit further includes a state machine which operates to transfer data from an input pin of the circuit which is dedicated to the state machine to the devices relating to scan testing. The state machine supports a plurality of data transfer protocols. The choice of the protocol to be used is made as a function of a signal received on the input pin. Responsive to an input pin signal, the state machine enters an operational mode wherein scan test programming data is serially received at the input pin and communicated to the devices which facilitate scan testing. More specifically, the scan test programming data is serially communicated to a scan test register, where the data is output in parallel to the scan test device.