The boot process requires the dedicated I/O pins. The MIO pins that are required depend on the boot mode selected. The MIO pins required for a boot mode are programmed by the BootROM code. Only those pins associated with the selected boot mode are programmed, the settings for the other MIO pins are not affected.
- Required, dedicated pins for all boot modes (includes JTAG interface that is recommended, but not required)
- MIO pins for the boot device interfaces, which includes flash memory devices and SelectMAP