Can the logic analyzer trigger on DDR2 protocol violations?
A. It is possible by using the advanced turbo triggering in the Agilent OS. You can set up different scenarios to trigger on violations. There are triggers in the advanced turbo triggering that will allow you to trigger on too few states between patterns, trigger on 1 certain pattern immediately followed by another specified pattern, etc. Without the advanced turbo trigger we don’t think it would be possible. Q. What do we do with the Differential Strobes? Some of them show on the pin out but aren’t connected to clock pins on the analyzer. A. Use only the positive signal from the differential pair. The only time we use both pairs is when they are routed to a clock signal. We have had success just using the positive signal from the differential pair. Q. What clock do we use to sample Reads and Writes? We believe that we should use the command clock, but this raises some questions about this technique. Do the separate groups of data, each of which has its own Strobe, change in phase rela
