DMA pins

Pedro Lopes

Remembering... I'm developing a DMA based on TMS320C6202 DMA. I'm member of Brazil IP Network (http://www.brazilip.org.br/).

In SPRU557A don't have the pins(in, out, inout, etc.) of DMA and we(DMA group) need to define DMA interfaces.

Is there a TMS320C6202 DMA pins specification?

Thanks.

over 16 years ago

Mariana over 16 years ago

TI__Mastermind 24340 points

Hi Pedro,

DMA is an internal "Direct Memory Controller" that has no pins directly associated to it. What it does is that accelerates data transfers, leaving the CPU free to do other things.

Events that come from peripherals (see datasheet page 18), for example, trigger the DMA data transfers.

Here is the link to the datasheet:

http://www.ti.com/lit/gpn/tms320c6202

Pedro Lopes over 16 years ago in reply to Mariana

Prodigy 100 points

Thanks, Mariana.

But I'm developing a DMA Controller. Then I need to know all mechanisms involving DMA Controller communication with others DSP components.

My aim is not whole DSP, but my aim is a part of it: DMA Controller. And i would like to know how DMA Controller interacts with others DSP components(DSP core, other peripherals, etc);

In this context, wich pins are responsible for this interaction?

Thanks.

Mariana over 16 years ago in reply to Pedro Lopes

TI__Mastermind 24340 points

Pedro,

There are no pins that communicate between DSP and DMA, it is all in the same silicon piece.

The communication is made using the internal registers. The addresses for the registers are in the datasheet page 12. The details of the registers are explained in the document you mentioned:

http://focus.ti.com/dsp/docs/dspsupporttechdocsc.tsp?sectionId=3&tabId=409&familyId=326&abstractName=spru577a

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DMA pins