Reconfiguring debug circuitry

Abstract

A method of reconfiguring a current debug configuration of a debug unit connected to a peripheral circuit on an integrated circuit chip. The method comprises the debug unit collecting debug data of the peripheral circuit and outputting the debug data in a message stream. The debug unit receives a debug reconfiguration command. The debug unit transmits an indication of the current debug configuration, then reconfigures the current debug configuration to a new debug configuration in accordance with the debug reconfiguration command, then transmits an indication of the new debug configuration. The indication of the current debug configuration and the indication of the new debug configuration are transmitted adjacent to the debug data in the message stream.

Dependencies are inferred from the claim text.