Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Canaan Inc./K210/SPI0/spi_ctrlr0#0x0
aitm=standard
SPI Control Register
instruction_address_trans_mode
0 (standard): STANDARD
1 (addr_standard): ADDR_STANDARD
2 (as_frame_format): AS_FRAME_FORMAT
ADDR_LENGTH
INSTRUCTION_LENGTH
WAIT_CYCLES
https://github.com/cmsis-svd/cmsis-svd-data