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AM263P4: TCM addressing inconsistencies in documentation and examples

Huey Duong
Intellectual 290 points
Part Number: AM263P4
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Re SPRUJ55B & mcu_plus_sdk_am263px_10_01_00_31.

1. In TRM, TCMB_RAM start address and size for R5FSS0-1, 1-0, 1-1 seem incorrect.   Should they end at 0x0009_FFFF and have a size of 96KB?

2. In sdk examples, most (if not all) sysconfig files set TCMB to be 32KB.  Should it not be 96KB as well?

coremark_benchmark:

3.  Should MPU be configured to set 2 regions (32KB + 64KB)? Since it only allows powers of 2. 96KB is not an option.

Thanks for the support

  • 0
    TI__Guru*** 135355 points

    Hello Huey,

    Huey Duong said:
    1. In TRM, TCMB_RAM start address and size for R5FSS0-1, 1-0, 1-1 seem incorrect.   Should they end at 0x0009_FFFF and have a size of 96KB?

    Rev C of the TRM for AM263P is now live on TI.com and the memory map tables have been updated to address those issues.

    Huey Duong said:
    2. In sdk examples, most (if not all) sysconfig files set TCMB to be 32KB.  Should it not be 96KB as well?

    Not sure on logic with SDK examples - could be due to how much TCM space is expected to be needed.

    Huey Duong said:
    3.  Should MPU be configured to set 2 regions (32KB + 64KB)? Since it only allows powers of 2. 96KB is not an option.

    Yes MPU would need two regions for this. Would need to look at the MPU details if that could be implemented in one region but I believe not. I think you'd have to implement 128kB to do one region only.

    Best Regards,

    Ralph Jacobi