James E Hallman

US Patent:

20150046614, Feb 12, 2015

Filed:

Aug 12, 2013

Appl. No.:

13/965020

Inventors:

Frode Milch PEDERSEN - Trondheim, NO
Sebastien JOUIN - Nantes, FR
Stein DANIELSEN - Trondheim, NO
Francois FOSSE - Nantes, FR
Thierry DELALANDE - Nantes, FR
Ivar HOLAND - Trondheim, NO
James HALLMAN - Raleigh NC, US

International Classification:

G06F 13/362
G06F 13/40

US Classification:

710108

Abstract:

Implementations are disclosed for a centralized peripheral access controller (PAC) that is configured to protect one or more peripheral components in a system. In some implementations, the PAC stores data that can be set or cleared by software. The data corresponds to an output signal of the PAC that is routed to a corresponding peripheral component. When the data indicates that the peripheral is “unlocked” the PAC will allow write transfers to registers in the peripheral component. When the data indicates that the peripheral component is “locked” the PAC will refuse write transfers to registers in the peripheral component and terminate with an error.