|ARM Technical Support Knowledge Articles|
Applies to: ARM720T
When the cache is disabled the ARM720T will still perform a cache lookup of the address output by the ARM7TDMI. If the cache contains valid data, it is still possible to have a cache hit.
If the MMU is disabled and you get a cache hit, this is typically a programming error. When the MMU is disabled it is usual to flush the cache immediately.
Every cache line is invalid after reset and so there will never be a cache hit in that case.
Article last edited on: 2008-09-09 15:47:36
Did you find this article helpful? Yes No
How can we improve this article?