Xilinx Plan Ahead question

[pes]

Hi,


I' m new to Plan Ahead 12.1 and I' ve some values of I/O Ports in red color.
It concerns DDR3 pins and values in red are Drive Strength (12*) and
Slew Type (SLOW*).
What could be the signification?

Thanks

 

[maxascent]

DDR memory uses SSTL I/O and doesnt allow you to specify the driv
strength. It seems to me that the I/O is setup wrong.

Jon

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