Extended 4byte/32-bit addresses are enabled in three ways:
Bank address register — a software (command) loadable internal register that supplies the high order bits of address when legacy 24-bit addresses are in use.
Extended address mode — a bank address register bit that changes all legacy commands to expect 32 bits of address supplied from the host system.
New commands — that perform both legacy and new functions, which expect 32-bit address
Thanks for your reply.
I am using this flash as boot device for my processor which is configured to boot from 32 bit SPI NOR flash. But on power on, SPI flash will come up in 3 byte mode so my processor is not able to boot. So can you suggest how can I hard code that flash to boot always in 4 byte mode.