Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Keil/AT32F435xx_v2/XMC/BK2CTRL#0x0
PC Card/NAND Flash control register 2
Wait feature enable
Memory bank enable
Memory device type
External memory data bus width
ECC enable
CLE to RE delay
ALE to RE delay
ECC page size
https://github.com/cmsis-svd/cmsis-svd-data