FastScan and FlexTest Reference Manual, V8.6_4
A-4
SET END_MEASURE_CYCLE TIME Timing Command Dictionary
SET END_MEASURE_CYCLE TIME
Scope: Enables special timing rules checking
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. This command
cannot be used with patterns containing a capture clock. Use the Set
Split_measure_cycle Time command for patterns that contain a capture clock.
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. The first measure_sco event
moves to the end of the load_unload procedure cycle and each succeeding
measure_sco event moves to the previous shift procedure cycle.
Figure A-1 depicts the effect of the SET END_MEASURE_CYCLE TIME
command on the test procedure test cycles.
Figure A-1. Scan Event Timing for SET END_MEASURE_CYCLE
TIME
load_unload shift #1 shift #N
. . .measure_sco measure_sco
(repeatedly
apply shift)
capture
clock