Sun Zelong15/11/2011

Test Escape

• Fail in system-level functional test

• Fail at customer side

Diagnosis Test EngineerDiagnosis Test Engineer

Diagnosis TestsDiagnosis Tests

Debug EngineerDebug Engineer

Diagnosis workDiagnosis work

FeedbackFeedback

Test BehaviorsTest Behaviors

Gap

First time diagnosis accuracy isless than 60% for complex boards

LDDLLDDL

Let the people contribute the knowledge they know best.◦ Designers ->Spec.◦ Diagnosis experts->Test description.◦ Debug engineers->Feedback of tests.

LDDL◦ Easy to express the knowledge.◦ Global knowledge collection.◦ Automatically provide more valuable feedback to

every stakeholder.

LDDLAnalytical

Engine

LDDLAnalytical

Engine

test t1{flow:

A>B>C;B::a>B::b;B>D>C;

call:A{ta1,ta2,ta3};B::a{tba1,tba5};B::b{tbb2,tbb4};C{tc3};D{td1};

}test t2…..

asic B{ a>b>c>d>a; b>d; c>a;}block B::a{tests: ta1=50%; ta2=20%; ta3=10%;relations: ta1^ta2=0.5; ta2^ta3=0.2; ta1^ta2^ta3=0.05;}