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:
Sep. 02, 2014
Filed:
Dec. 16, 2011
David Michael Gilday, Chatteris, GB;
Simon John Craske, Cambridge, GB;
David Michael Gilday, Chatteris, GB;
Simon John Craske, Cambridge, GB;
ARM Limited, Cambridge, GB;
Abstract
A data processing apparatus has at least one circuit block accessible for debugging by a debugger, the block having a set of debug status registers and a debug event register which is set by the circuit block to indicate occurrence of a debug event. Debug interface circuitry interfaces with the set of debug status registers for each circuit block. The circuitry includes at least a first portion which is in a first power domain that remains in a fully powered state while the debugger is connected to the circuitry. Status registers are provided in a second power domain which transitions between the fully powered state and at least one low power state while the debugger is connected to the circuitry. Content of the debug status registers is only accessible to the debugger when the second power domain is in the fully powered state.