86 FX3 Programmers Manual, Doc. # 001-64707 Rev. *C
FX3 Application Structure
Figure 8-1. Initializing Sequence
8.1.1.1 Firmware Entry
The entry point for the FX3 firmware is CyU3PFirmwareEntry() function. The function is defined in
the FX3 API library and is not visible to the user. As part of the linker options, the entry point is be
specified as the CyU3PFirmwareEntry() function.
The firmware entry function performs the following actions:
1. Invalidates the caches (which were used by the bootloader)
2. Initialize the MMU (Memory Management Unit) and the caches
3. Initializes the SYS, FIQ, IRQ and SVC modes of stacks
4. The execution is then transferred to the Tool chain initialization (CyU3PToolChainInit()) function.
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