Dear Team ,
Currently i am Developing and verifying AHB 5 Protocol. I am not able to understand HPROT signal and its behavior.
Please help to get clarity on this signal and its behavior.
Dear Team ,
Currently i am Developing and verifying AHB 5 Protocol. I am not able to understand HPROT signal and its behavior.
Please help to get clarity on this signal and its behavior.
Hi Deva,
As per the Arm AMBA 5 AHB Protocol Specification:
"The signals indicate if the transfer is an opcode fetch or data access, and if the transfer is a privileged mode access or a user mode access."
Table 3-4 "Protection signal encoding" list all the combinations: Opcode fetch, Data access, User access, Privileged access, Non-bufferable, Bufferable, Non-cacheable and Cacheable.
The specification also gives a recommendation in the case where Masters are not capable of generating accurate protection information.
