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NetBurner 3.0
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The NANO54415 uses a 4MB serial flash chip that provides a normal boot monitor and alternate boot monitor images, and an 8MB serial flash chip to store the System Parameters, User Parameters, and User Application. Only the DDR2 RAM will appear in the NANO54415 memory map as described in the previous section. Using a serial flash for the boot monitor enables an easy recovery in the event an application corrupts the 8MB serial flash.
The Boot Monitor is executed first and provides a minimal boot implementation with only serial communication. The Boot Monitor will first attempt to run the User Application image. If the User Application is corrupted or does not exist, it will attempt to run the Alternate Boot Monitor. If the Alternate Boot Monitor cannot be run, the system will remain in the Boot Monitor and serial communication must be used to communication with the module.
The Alternate Boot Monitor extends the functionality of the Boot Monitor to include network communication so a bad User Application recovery can be done through the network rather than serial.