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FastScan and FlexTest Reference Manual, V8.6_4
4-30
FlexTest Test Pattern File Format Test Pattern File Formats
Format Patterns” on page 4-29). Therefore the period,
data_sample_time, offset, and optional pulse_width must be scaled
using the timescale. Otherwise the conversion from VCD format to
FlexTest's cycle representation may be inaccurate.
For example, assume that the time scale = 10 ps but that simulation was
performed using simulation data that used a 1 ns period. All literals for
the time must be stated in terms of 10 ps. Thus, the period would be 100
since 100 * 10 ps equals 1 ns (or 1000 ps).
o period defines the period of the timeplate.
o data_sample_time defines the time that VCD Reader uses to strobe the
values of the pins in each cycle. This value determines when the VCD
data stream is sampled during the conversion of VCD format to
FlexTest's cycle format. It refers to the “data sampling” time for input
and output values.
o offset defines the offset of the pins.
o pulse_width defines the pulse width for the pins with return timing
waveform.
o The smallest period defined in the add timeplate commands is used as
the test cycle length.
o Periods defined in add timeplate commands must be equal to multiples
of the test cycle length.
o data_sample_time must be greater than or equal to the offset and less
than or equal to (offset+pulse_width).
2. Setup Input Waveform timeplate_name
This command sets the default timeplate for all primary input pins.
3. Add Input Waveform timeplate_name pin_list