Answers Database
Foundation F1.5, Timing Simulator: Metastable operation not accurately simulated
Record #5057
Product Family: Software
Product Line: Aldec
Product Part: Foundation Logic Simulator
Product Version: 1.5
Problem Title:
Foundation F1.5, Timing Simulator: Metastable operation not accurately simulated
Problem Description:
Urgency: Standard
General Description:
When a metastable operation occurs in timing simulation in the
Foundation simulator, the simulator does not go stable until either
a clear, a preset, or the next clock cycle is encountered.
Solution 1:
When the actual device goes into a metastable operation, it recovers
within 1ns and the design continues on. This is outlined in Application
Note XAPP094: Metastable Recovery and on page 13-57 of the
1998 Xilinx Databook.
End of Record #5057 - Last Modified: 12/01/98 16:09 |
