TMS320F28035: F28035 extra RAM

Ivan Yu

Prodigy 50 points

Part Number: TMS320F28035

Hi,

In TI F28035 datasheet, the following RAM appears to exist from 0x3F8000.

It looks strange as it is not together with other RAM.

Am I missing something? Can I use it in the same way as other RAM (L0, L1, L2, L3)?

over 2 years ago

0 Vivek Singh over 2 years ago

TI__Guru** 117001 points

This look correct but I'll check again with other experts in our team and confirm.

0 Ivan Yu over 2 years ago in reply to Vivek Singh

Prodigy 50 points

Can you please confirm this section of RAM actually exist in F28035? If yes, can it be used for data or programme?

I have contradicted information, as some people say this part actually does not exist. It is a mistake in the datasheet.

0 Vivek Singh over 2 years ago in reply to Ivan Yu

TI__Guru** 117001 points

Will check and get back tomorrow.

+1 Hareesh Janakiraman over 2 years ago

TI__Guru* 95315 points

As shown in the datasheet, L0 is dual-mapped. i.e. L0 is physically one block of memory but dual-mapped in different address ranges.

0 Ivan Yu over 2 years ago in reply to Hareesh Janakiraman

Prodigy 50 points

Does that mean if I use 0x008000 to 0x008800 for program, then I cannot use 0x3F8000 to 0x3F8800 for data? There is only one block of L0 (0x800), which can be either used for 0x008000 or 0x3F8000.

+1 Hareesh Janakiraman over 2 years ago in reply to Ivan Yu

TI__Guru* 95315 points

Ivan Yu said:
Does that mean if I use 0x008000 to 0x008800 for program, then I cannot use 0x3F8000 to 0x3F8800 for data?

Correct.

Ivan Yu said:
There is only one block of L0 (0x800)

Correct.

Ivan Yu said:
which can be either used for 0x008000 or 0x3F8000.

Whether you are writing to 0x8000 or 0x3F8000, you will be writing to the same physical location.

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TMS320F28035: F28035 extra RAM