Add Cell Constraints | Command Dictionary |
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An error condition occurs if the pin pathname does not resolve to a scan memory element. Buffers and inverters may reside between the pin and the memory element.
∙chain_name cell_position
A string pair that specifies the name of the scan chain and the position of the cell in the scan chain. The scan chain must be a
The MASTER memory element of the specified scan cell is set to the value that you specify; there is no inversion. However, the tool may invert the output pin of the scan cell if there is anything between it and the MASTER memory element if inversion exists between the MASTER and the scan output pin of the scan cell only.
∙C0
A literal that constrains the scan cell to load value 0 only.
∙C1
A literal that constrains the scan cell to load value 1 only.
∙CX
A literal that specifies to simulate the loaded scan cell value as unknown (uncontrollable).
∙Ox
A literal that specifies to simulate the unloaded scan cell value as unknown (unobservable).
∙Xx
A literal that constrains the scan cell to be both uncontrollable and unobservable (CX and Ox).
FastScan and FlexTest Reference Manual, V8.6_4 |