Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Alif Semiconductor/AE512F80F5582AS_CM55_HE_View/OSPI0/OSPI_DDR_DRIVE_EDGE#0x0
OSPI Transmit Drive Edge Register
TXD Drive Edge register which decided the driving edge of transmit data. The maximum value of this bit field is equal to [(BAUDR/2) - 1].
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https://github.com/cmsis-svd/cmsis-svd-data