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Test for PCI, PCI-X protocol rule violations

Posted: 12 Feb 2009     Print Version  Bookmark and Share

Keywords:Protocol Observer  rule violations  PCI 

Protocol rule violations does not always result to the crashing of a computer system. If protocol rule violations are caused by several devices, however, the system is likely to crash. To exclude this possibility, you should take steps to locate all protocol rule violations that occur on your system. Agilent says that the Protocol Observer, in combination with the Analyzer, simplifies the task of detecting protocol rule violations This is not always easy-you have to be able to spot them in a data trace.

This application note shows you how to obtain a quick overview of all protocol rule violations. It also provides a simple way of focusing on the protocol rule violations of interest. This application note is based around an example that shows you how the Agilent testcard can be used to detect protocol violations that occur when accessing the I/O space of a PCI graphics card.

The protocol observer hardware implemented on the Agilent testcard simultaneously checks 53 different protocol rules against the PCI/PCI-X Specification. If a protocol rule is violated, the protocol observer generates a signal (the berr signal for PCI and the Proterr for PC!-X) that can be used to trigger the Analyzer, so that it can capture the bus traffic around the violation.

View the PDF document for more information.

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