Synchronizing TAP controller after power is restored
US8443331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2010 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Oct 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/318552
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system includes multiple TAP controllers that can be independently powered up and down. When a first TAP controller is powered up from a powered-down state while a second TAP controller is already in a powered-up state, the first TAP controller is reset causing the first TAP controller to enter a reset state in response to the power-up of a module on which the first TAP controller is disposed. The first TAP controller enters an idle state and its control signal is gated to hold the first TAP controller in the idle state until the second TAP controller enters the idle state. Subsequently, the first TAP controller is released such that the control signal supplied to the first and second TAP controllers are equal, thereby synchronizing the first TAP controller and the second TAP controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.