CAN Conformance test (ISO16845) - Test Specification

Microcontrollers and standalone CAN protocol implementations have to be compliant with the ISO 11898-1 specification to ensure the communication quality of a CAN network. To proof this conformity,  C&S group has developed a test system and the test cases based on the standard ISO9646. C&S group has been involved in the standardization of the tests in ISO16845.
It came out, that these tests are not sufficient for many applications. Therefore C&S group has extended the test coverage by adding specific test groups for host interface and robustness tests.

Test method and test suite
The Test Suite consists of a test system, its test scripts and the required coordination software - as defined in ISO 9646.
The test system is composed from reliable calibrated components and is available as CCT conformance test system.
Each test program - called Test Case - generates a real-time stimulus to the Implementation Under Test (IUT). The response of the IUT is recorded and compared with the expected response.  Conformance with the standard is derived from the result of the comparison.  

Test execution and test result
Test Execution can be performed at the end of the chip implementation and - to reduce the risc of faulty implementations - during the development process as a pre-test with FPGA . 'Customer Coaching' is established to support a better understanding of the different specification requirements, improving the design and avoiding troubles during the conformance test.
Result and Competence
The result of conformance testing is documented by an authentication sheet, which is requested by most automotive OEMs. Technical and organizational requirements of conformance testing have been implemented at C&S as the accreditation according to ISO 17025 shows.

Tested Products
Many different VHDL and silicon implementations have been tested for conformance during the past. Some are released for publication in the Tested Products page.