Quartus

Design Assistant warning: <External reset should be synchronized using two cascaded registers>. Found <number> node(s) related to this rule.


CAUSE: In the current design, the Design Assistant found the specified number of nodes where an external reset (which is a primary input that is used as a reset signal) is not synchronized; that is, where the external reset does not drive two cascaded registers before driving one or more input reset ports of other registers. However, an external reset should be synchronized using two cascaded registers. The submessage(s) of this message list the node(s) that the Design Assistant found.
ACTION: Synchronize the external reset.

See also:

Analyzing Designs with the Design Assistant
External Reset Should be Synchronized Using Two Cascaded Registers

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