Debug apparatus and methods for dynamically switching power domains
US9329963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Jan 28, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31721
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus are provided that facilitate debugging operations for components that may include different power domains. In an embodiment, an integrated circuit (IC) includes a plurality of hardware sectors, each hardware sector associated with a debug observability circuit that is served by a debug data bus of a debug circuit. The plurality of hardware sectors includes a controlled sector residing in a dynamically-controlled power domain that may be turned off while the power domain of another sector remains on. A selectively switchable data bus component is configured to couple the debug observability circuit associated with the controlled sector to the debug data bus when the power to the controlled sector is on and to switch to bypass the debug observability circuit associated with the controlled sector when the power to the controlled sector is not on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.