Description of the register architecture (preferably with pictures), including names, sizes and intended uses of all registers
Description of all instruction formats
Description of all addressing modes
THANKS
Hi Patels - Welcome to the community! Here are a few different places you can read more about the ARM Cortex-A9 processor:
Cortex-A9 Processor - ARM
ARM Information Center
and then there is quite a bit of content published in the community around Cortex-A9.
If you still have questions after looking through the resources above, please ask them here - we have many experts in the community that can provide you with the answers you're looking for.
View all questions in Cortex-A / A-Profile forum