Flash Controller Verification for Dual-Core IoT Chip

The verification of flash controller of dual-core SOC chip is briefly introduced, and the verification difficulties are presented. A system-level verification platform is established by combining the flash and dual-CPU core link path, and in the process of functional verification, the test method of preset use cases is combined with the test strategy of dynamic stimulus generation, which not only realizes the diversity of test scenarios, but also ensures the full coverage of boundary conditions. In order to improve the verification efficiency, a dedicated simulation acceleration device is introduced to verify the SPI flash control module, and this method compresses the entire simulation cycle by approximately and improves the accuracy and reliability of verification. Simulation results show that the verification scheme successfully covers nine core functional modules, including instruction parsing, timing synchronization, interrupt response, etc. in which the functional integrity index reaches the industry's highest standard, and the code execution path coverage rate reaches 100%. After several rounds of stress test verification, the controller can stably process data frames under the corresponding clock frequency, and seamlessly cooperate with the DMA module, interrupt controller, and other components in the SOC chip.