ID:13631 VHDL Case Statement error at <location>: Case Statement cannot be used as Register Inference because Case Statement cannot contain an edge-triggered or event-triggered condition for the statement's execution. Use If Statement.

CAUSE: In a VHDL Design File (.vhd) at the specified location, you used a Case Statement as a Register Inference. However, a Case Statement cannot contain a condition that specifies that the statement be executed at the rising or falling of an edge or at the occurrence of an event; as a result, you cannot use the Case Statement to infer a register.

ACTION: Change the Case Statement to an If Statement, which can contain an edge-triggered or event-triggered condition.