Mentor v8.6_4 manual SET Endmeasurecycle Time

SET END_MEASURE_CYCLE TIME Timing Command Dictionary

SET END_MEASURE_CYCLE TIME

Scope: 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.

A-38 FastScan and FlexTest Reference Manual, V8.6_4