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Why the 5 LSBs of the LINK field should be cleared to 0

Jia Tang
Prodigy 110 points

Hi,

When I read the EDMA3 User Guide,I had a doubt. This statement is from UG:

"You must program the link address to point to a valid aligned 32-byte PaRAM set. The 5 LSBs of the LINK
field should be cleared to 0."

 

Now I wanna know Why the 5 LSBs of the LINK field should be cleared to 0 ,why not 4 or 6?

  • 0
    TI__Guru* 84110 points

    The LINK field is effectively a byte address for the start of a Link PARAM set.

    Since the address of the start of the Link PARAM set must be 32-byte aligned, what do you expect the 5 Least Significant Bits to be for every Link PARAM starting address?