|ARM Technical Support Knowledge Articles|
Applies to: AXI
Page 4-7 of the AMBA 3 AXI Protocol specification gives example equations to calculate the addresses used by slaves to perform burst accesses.
However for WRAP style bursts the final equation on this page is incorrect.
The final comment and equation are described in the specification as...
If Address_N = Wrap_Boundary + (Number_Bytes X Burst_Length), use this equation:
. Address_N = Wrap_Boundary
...but this would not increment any address value after the boundary wrap address.
Once the burst address has reached the wrap point, you should use the following calculation for each address...
. Address_N = Wrap_Boundary + (N-1) x Number_Bytes
Article last edited on: 2008-09-09 15:47:49
Did you find this article helpful? Yes No
How can we improve this article?