Virtual ComplianceDesignerSI enables engineers to determine if their DDR3 busses pass or fail the Jedec standard. This solution provides pass and fail criteria for key timing metrics such as DDR3 data setup and hold timings, derated analyses, bit to bit skew timing, overshoot, undershoot, etc. The virtual compliance solution automatically determines the pass and fail criteria for both the base and derated specifications on a per bit transition. Using DesignerSI dynamic links with SIwave, engineers can determine the effect that power and ground bounce have on the DDR3 timing measurements. Read and Write timing analyses can be performed within a single simulation environment that parameterizes all corner cases with automated reporting. This solution is scalable to any number of DDR3 bytes, ranks, DIMMs, and memory banks. Entire DDR3 systems can easily be solved starting with electromagnetic extraction using ANSYS electromagnetic field solver technologies to the pass/fail timing analyses with automated reporting. In addition to eye diagrams that display setup and hold timings engineers can look at flight time calculations, TDR plots, and automated .csv reports that show pass/fail for the DDR3 memory solution. The report provides in depth analysis on a bit by bit basis to show exactly which data lines are failing and at which transitions. The DDR3 virtual compliance solution can be customized by the user to accommodate user defined slew rate tables and customized reports. This solution can be used to create design kits for any bus that requires virtual compliance allowing it to extend to HDMI, USB, PCIe, GDDR, LPDDR and FibreChannel.
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