Having a single massive PDF as the only source of full documentation for modern chips is not great.
The RT1064 official reference manual has a size of almost 20 MB and has a whooping 3500 pages. Searching and finding important information in that PDF takes forever. Especially as it appears to not be indexed.
I understand that having all documentation in a single PDF is sometimes convenient. But could you also provide the infos on an HTML page similar to what ARM does? That would make finding and referencing things much easier and faster.
I am aware that this would be a big project and I don't expect this would happen over night, but would definitely be a big help in using your products...And the info is there in the PDF already...