Command Dictionary | Set Capture Clock |
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Set Capture Clock
Tools Supported: FastScan and FlexTest
Scope: All modes
Usage
SET CApture Clock {primary_input_pin clock_procedure_name} [-Atpg]
Description
Specifies the capture clock name for random pattern simulation.
The Set Capture Clock command performs slightly differently depending on whether you are using FastScan or FlexTest. In either case, you can use the Report Environment command to list the capture clock and the Report Clocks command to identify the current list of clocks.
The following paragraphs describe how the Set Capture Clock command operates for each tool.
FastScan Specifics
The Set Capture Clock command specifies the name of the capture clock that the tool uses during random pattern simulation. You can specify the name of a specific pin in a test procedure file that identifies the pin. The pin must be a currently defined clock pin. Also, the capture clock that you specify cannot have a pin constraint.
If you do not specify a capture clock with this command, FastScan sets the capture clock to none. If there is no capture clock and there is only one clock in the circuit that is not a set or reset line, FastScan sets that clock as the capture clock during the rules checking and displays a warning message identifying the capture clock.
FlexTest Specifics
The Set Capture Clock command allows the design rules checker to support the internal scan circuitry within certain boundary scan designs.
For certain boundary scan designs to support their internal scan designs, they only allow one cycle for each capture. For that one capture cycle, FlexTest must use the boundary scan clock and all other clocks must be at their off states.
FastScan and FlexTest Reference Manual, V8.6_4 |
