Ruchir Chhabra

US Patent:

20100199077, Aug 5, 2010

Filed:

Jan 30, 2009

Appl. No.:

12/363259

Inventors:

Lawrence L. Case - Austin TX, US
Asaf Ashkenazi - Austin TX, US
Ruchir Chhabra - Austin TX, US
Carlin R. Covey - Tempe AZ, US
David H. Hartley - Seacombe Heights, AU
Troy E. Mackie - Austin TX, US
Alistair N. Muir - Austin TX, US
Mark D. Redman - Gilbert AZ, US
Thomas E. Tkacik - Phoenix AZ, US
John J. Vaglica - Austin TX, US
Rodney D. Ziolkowski - Austin TX, US

Assignee:

FREESCALE SEMICONDUCTOR, INC. - Austin TX

International Classification:

G06F 9/00
G06F 21/00

US Classification:

713 1, 713182

Abstract:

Under the direction of a first party, an integrated circuit (IC) device is configured to temporarily enable access to a debug interface of the IC device via authentication of the first party by a challenge/response process using a key of the IC device and a challenge value generated at the IC device. The first party then may conduct a software evaluation of the IC device via the debug interface. In response to failing to identify an issue with the IC device from the software evaluation, the first party can permanently enable open access to the debug interface while authenticated and provide the IC device to a second party. Under the direction of the second party, a hardware evaluation of the IC device is conducted via the debug interface that was permanently opened by the first party.