Article ID: 000079667 Content Type: Troubleshooting Last Reviewed: 10/15/2013

Why is the memory reset output port unconstrained in the memory controller?

Environment

    Reset
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Description

In the Quartus® II software, the TimeQuest tool may report unconstrained paths for the UniPHY or ALTMEMPHY memory controllers. The mem_reset_n output signal to the memory device is an asynchronous signal and there are no restrictions about when it can go low or high. Therefore this signal is not constrained in the memory IP.

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