SPRUJ53B April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
Write accesses from the DMA can be protected by setting the DMAWRPROTx bit of a specific register to 1. If a write access is done by the DMA to protected memory, a write protection violation occurs.
If a write access is made to a dedicated or shared memory by a DMA, and DMAWRPROTx is set to 1 for that memory, the write is called a DMA write protection violation.
A flag gets set in the DMA access violation flag register, and the memory address where the violation happened gets latched in the DMA fetch access violation address register. These are dedicated registers for each subsystem.
Note 1: | All access protections are ignored during debug accesses. Write access to a protected memory go through when the write is done using the debugger, irrespective of the write protection configuration for that memory. |
Note 2: | Access protection is not implemented for M0 and M1 memories. |