11. Software Tests Architecture Regs Access USB Endpoint Data USB Framework Test (randomization, configuration, direct tests) Interrupts Regs Access CPU (switch) MEM (physical memory) OCP-IP OCP-IP SystemC SystemC USB Host
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13. Firmware Architecture Regs Access USB Endpoint Data USB Mass Storage Class USB Device Framework Disk Abstraction Layer Firmware (main) RAM Disk emulation SATA Stack Regs Acc.. USB SS -DEV RAM ATA-IF