Article ID: 000080134 Content Type: Error Messages Last Reviewed: 08/03/2023

Error: Channel uncertainties must be greater than or equal to 0

Environment

    Quartus® II Software
BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

When you use the DDR3 SDRAM controller with UniPHY and follow the FPGA wiki page (Intel communities) Measuring_Channel_Signal_Integrity to calculate ISI parameters in the Board Settings tab of the DDR3 IP GUI, you may get a negative number. You will get the above error message if the negative number is entered into the GUI.

 

Resolution

To avoid the error message, enter zero if you calculate a negative number for ISI parameters.

 

Related Products

This article applies to 15 products

Arria® V GX FPGA
Cyclone® V GT FPGA
Stratix® V E FPGA
Stratix® V GS FPGA
Stratix® V GT FPGA
Stratix® V GX FPGA
Cyclone® V SX SoC FPGA
Arria® V GT FPGA
Arria® V GZ FPGA
Cyclone® V E FPGA
Cyclone® V GX FPGA
Arria® V ST SoC FPGA
Arria® V SX SoC FPGA
Cyclone® V SE SoC FPGA
Cyclone® V ST SoC FPGA

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