Data processing apparatus and related methods of debugging processing circuitry
US8826081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3656
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing apparatus having processing circuitry and debug circuitry is debugged by operating the processing circuitry to generate data. The debug circuitry is employed to generate trace elements indicative of the operation of the processing circuitry. Trace elements are caused to be output from the data processing apparatus over a communication bus capable of connecting a plurality of devices. The communication bus is controlled by a protocol for data interchange requiring data interchange from any device on the communication bus to be controlled by a single processing system. The passing of the trace elements onto the communication bus is controlled using an interface unit of the debug circuitry. The interface unit comprises a controller arranged to allow each of the interface unit and processing circuitry to be separate processing systems which can each independently control data interchange from the data processing apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.