Method and apparatus for probing a computer bus

Details Method and apparatus for probing a computer bus Method and apparatus for probing a computer bus

2004-07-08

2008-03-04

Britt, Cynthia (Department: 2138)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital logic testing

C714S798000, C714S056000, C324S754090

Reexamination Certificate

active

07340656

ABSTRACT:
The subject invention facilitates the efficient operation of the disassembly of the microprocessor bus by providing an apparatus and method for detecting and correcting a strobe phase inversion and predrive filtering in a 2× source synchronous data transfer bus. Apparatus according to the subject invention detects a data strobe inversion in a source synchronous 2× data bus and corrects for this inversion by reordering the received data as well as filtering predrive effects in real time. Specifically, this apparatus according to the subject invention monitors bus traffic in a multiprocessor environment and correctly captures all double data rate exchanges regardless of the source IC or destination IC in the system.

REFERENCES:
patent: 4477775 (1984-10-01), Fazekas
patent: 6446249 (2002-09-01), Wang et al.
patent: 6539535 (2003-03-01), Butts et al.
patent: 6687865 (2004-02-01), Dervisoglu et al.
patent: 2006/0064615 (2006-03-01), Dervisoglu et al.
patent: 244926 (1987-11-01), None

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