Article ID: 000077738 Content Type: Error Messages Last Reviewed: 06/16/2015

Error: Slow slew rate is not compatible with on-chip output termination for the address/command bus. Either turn off output termination (if possible), or use Fast slew rate.

Environment

    Quartus® II Subscription Edition
BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

You may experience the above error when setting the Arria 10 DDR3L IP I/O tab Slew Rate option to Slow on the Address/Command signals. Slow slew rate is only supported when the output termination is turned off, and SSTL-135 does not allow the output termination to be turned off.

Resolution

Perform board-level simulations with Fast slew rate to determine the optimal external termination values.

This issue will be fixed in a future release of the Quartus® II software.

Related Products

This article applies to 3 products

Intel® Arria® 10 GT FPGA
Intel® Arria® 10 GX FPGA
Intel® Arria® 10 SX SoC FPGA

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