P Test Program Flow Assumptions Flow constructs are owned / developed / implemented by Test or Test Development (TD) Engineering group Usually TD engineering has developed test methodologies for specific IC capabilities Test methodologies can / should have “libraries” or templates of TestMethods and flows to apply the standard suite of tests for given IC capabilities Reuse and pre-defined test sets are common and desired by TD engineering

Test Program Flow Constructs Organization Top-level STIL Constructs –TestMethod definitions –TestModule definitions –SubFlowModule definitions –Entry Objects definitions “Environment-level constructs –Top-level TestProgram “container” –EntryPoint declarations or references –Flow hierarchy references

Diagram of Flow Constructs within STIL EntryPoint defs TestMethod defs TestModule and SubFlowModule defs STIL constructs/defs Environment TestProgram “Char”TestProgram “WS” TestProgram blocks can align with CTL “configuration/TestMode blocks TestProgram “FinalTest”TestProgram “LabATE” Standard Libraries via Includes (could be blocked like MacroDefs) TestProgram blocks contain references to EntryPoints, TestModules And SubFlowModules

Mock Up STIL File with TestProgram Flow Constructs: Top Segment

Mock Up STIL File with TestProgram Flow Constructs: TestModuleDefs and EntryPointDefs Segment

Mock Up STIL File with TestProgram Flow Constructs: Environment/TestProgram Segment

Contrast with CTL Extension Assumptions There are several “owners” and uses with CTL data –IP Core providers: Define Core test methodology – provide “test” data to the boundary of the Core (for integration to full chip by EDA tools) –EDA tools: Use CTL from Core provider for inclusion and integration of Core into full SoC chip. As part of integration, these tools regenerate the CTL to make test data relate to the boundary of the SoC –Test generation tools (where needed) use the full SoC CTL/STIL data to generate tester-ready files High level of Reuse is assumed for test data… reconfigurable per-use via the EDA integration process

CTL Extension Construct Mechanisms Used DomainNamed CTL constructs used for reconfigure/reuse of test data –SignalGroup and pattern protocol constructs are vehicles Multiple CTL blocks used within the P Environment block, each for different Test Method / configuration / Core instance grouping DomainNamed blocks generated by EDA integration tools and referenced by CTL configuration “reference” blocks. These DomainNamed blocks reside at the top STIL level and not within the CTL blocks. This promotes reuse.