On Improving 1149.1 BST Reliability for On-Line Scan

• Type: Article in International Conference Proceedings Book
• Date: 1999

Authors

José Miguel Vieira dos Santos (Author) Other; José Manuel Martins Ferreira (Author) FEUP

Conference proceedings International

Title: Proceedings of the Internatinal On-Line Testing Workshop IOLTW'99

Pages: 97-100

Internatinal On-Line Testing Workshop IOLTW'99

Rhodos, Grécia, 5 a 7 de Julho de 1999

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

CORDIS: Technological sciences > Engineering > Electrical engineering

Other information

Abstract (EN): The 1149.1 BST std provides no way to verify the integrity and correctness of scanned data. This may be acceptable for off-line applications, but it is a dangerous feature on-line: we need to have confidence in the string entering or leaving the target IC. Our proposal is to allow the BST controller to read the parity of this string immediately after the scan operation: in case of error, it will be repeated. The proposed method is based only on the four standard TAP pins.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4