Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/JPEG/JPEG_HUFFENC_AC1_14#0x0
JPEG Huffman encoder AC1
Huffman code 28
Huffman length 28
Huffman code 29
Huffman length 29
https://github.com/modm-io/cmsis-svd-stm32