External Memory Interface Handbook Volume 2: Design Guidelines: For UniPHY-based Device Families

ID 683385
Date 3/06/2023
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9.7.1. Calibration Emulation for Calibrated Path

In conventional static timing analysis, calibration paths do not include calibration effects. To account for the calibration effects, the timing analyzer emulates the calibration process and integrates it into the timing analysis.

Normally the calibration process involves adding or subtracting delays to a path. The analyzer uses the delay obtained through static timing analysis in the emulation algorithm to estimate the extra delay added during calibration. With these estimated delays, the timing analysis emulates hardware calibration and obtains a better estimate timing margin.

Note: Refer to <phy_variation_name>_report_timing.tcl and <phy_variation_name>_report_timing_core.tcl for the files that determine the timing margin after calibration.