FastScan and FlexTest Reference Manual, V8.6_4
A-38
SET END_MEASURE_CYCLE TIME Timing Command Dictionary
SET END_MEASURE_CYCLE TIMEScope: Enables special timing rules checking and sets timing information.
Usage
SET END_MEASURE_CYCLE TIME integer
Description
Ensures that the primary output measure is the last event of the test cycle, and
moves the measure_sco event to the end of the previous test cycle.
Certain tester formats, such as TDL 91, expect all measures to occur at the end of
the tester cycle. However, the scan output pin comparison always occurs in the
shift procedure prior to the shift clock application. The tester should measure scan
output pins in the shift procedure at the end of the test cycle. Therefore, when you
specify this command, the test pattern formatter safely moves the scan output
measure event to the end of the previous cycle.
Unlike the SET SPLIT_MEASURE_CYCLE TIME command, this command
ensures that all test cycles have measure events at the end--without splitting the
original test cycle into two. Note that you can specify only one of the following
commands in a timing file:
•SET SINGLE_CYCLE TIME
•SET SPLIT_BIDI_CYCLE TIME
•SET END_MEASURE_CYCLE TIME
•SET SPLIT_MEASURE_CYCLE TIME
If you place this command in the timing file, the timing rules checker ensures
compliance to the following conditions:
•All output pin strobes occur in the same timeframe.
•The period of all pins equals the end_measure_cycle time.