Steven Andrew Lowe

US Patent:

7191265, Mar 13, 2007

Filed:

Apr 29, 2003

Appl. No.:

10/425388

Inventors:

Marco De Angeli - Barzana, IT
Loc Thi Xuan Dang - San Jose CA, US
Gregory Dupree - Petaluma CA, US
Roberto Gianella - Milan, IT
Thomas Hamilton - Milpitas CA, US
Steven Lowe - Frisco TX, US
Marco Portinari - Bresso, IT

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 13/40
G01R 31/317
G01R 31/3185
G01R 31/3187
G06F 13/22
G01R 31/3177

US Classification:

710104, 714 30, 714724, 714727, 714729

Abstract:

A printed circuit board (PCB) may be used in a first mode where boundary scan techniques are used to externally program and/or test devices on the PCB, or a second mode where an internal source programs devices using boundary scan techniques. In one implementation, there is also additional flexibility to include or skip devices in a boundary scan chain and to accommodate non-scan related functions for pins used for scanning. These various modes of operation may be selected by activating and deactivating buffers.