In-chip bus tracer

摘要

A single integrated circuit comprises one or more functional modules; a bus port; a bus in communication with the one or more functional modules and the bus port; and a bus tracer disposed within the integrated circuit and configured to capture activity on the bus. A method for a single integrated circuit comprising a bus comprises capturing, in a bus tracer disposed within the single integrated circuit, activity on the bus; and providing, through a bus port of the single integrated circuit, the activity captured by the bus tracer.

主权项

1. A single integrated circuit comprising:
a first bus port configured to receive (i) capture criteria for a test from a host computer, and (ii) during the test, a plurality of frames from the host computer; a second bus port coupled to equipment; a first bus coupled to the first bus port; a second bus coupled to the second bus port; a protocol module (i) coupled to the first bus and the second bus, and (ii) configured to generate first protocol information, wherein, during the test, the plurality of frames are transferred to the equipment via the first bus, the protocol module, the second bus, and the second bus port; and a first bus tracer configured to (i) during the test, monitor activity on the first bus or the second bus, (ii) capture first test data in accordance with the capture criteria, and (iii) report the first test data to the host computer, wherein the first test data includes (i) the first protocol information, and (ii) data pertaining to the monitored activity on the first bus or data pertaining to the monitored activity on the second bus.