Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/JPEG/JPEG_HUFFENC_AC0_20#0x0
JPEG Huffman encoder AC0
Huffman code 40
Huffman length 40
Huffman code 41
Huffman length 41
https://github.com/modm-io/cmsis-svd-stm32