Add Atpg Functions | Command Dictionary |
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Select — The output of the function is a high state (1) if all its inputs are at a low state (0) or if one input is at a high state and the other inputs are at a low state. So, the function’s output is at a low state if there are at least two inputs at a high state.
SELECT1 — The output of the function is a high state (1) if one input is at a high state and the other inputs are at a low state (0). So, the function’s output is a low state if there are at least two inputs at a high state or all inputs are at a low state.
Frame (FlexTest Only) — The output of the function is delayed by one time frame. This option is not available in Setup mode.
Cycle (FlexTest Only) — The output of the function is delayed by one test cycle. This option is not available in Setup mode.
∙
An optional switch that defines the initial state value of a Frame or Cycle function. You must specify this option at the end of the Add Atpg Functions command when using the Frame or Cycle function type. If this option is not given, the initial value is assumed to be X. For Frame, only one initial value is needed. For Cycle, the number of initial values specified is the same as the number of frames per cycle which is defined in Set Test Cycle command. For example, if there are 3 time frames per cycle, the corresponding command is:
Add Atpg Function foo_cycle cycle foo -init_state 110
For multiple initial values, the order specified begins with the value specified furthest on the right. In the example above, the first initial value is 0 followed by 1, and finally by 1 again.
The following lists the methods for naming the objects on which the function operates. You can use any number of the argument choices, in any order.
∙pin_pathname
A repeatable string that specifies the pathname to the pin on which you are placing the function. If you specify an input pin name, the tool automatically replaces it with the output pin of the gate that drives that input pin.
∙gate_ID#
A repeatable integer that specifies the gate identification number
FastScan and FlexTest Reference Manual, V8.6_4 |
