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FPGA cannot be configured as DMA master for data transfer over local bus (GPMC) of OMAP4460.

Ruchin Kumar
Prodigy 110 points

Hi,

 

we have checked the OMAP4460 data transfer over local bus interface.

The local bus on OMAP4460 does not support Multi-master data transfer and local bus DMAs can only be configured as master.

Hence, the FPGA cannot be configured as DMA master for data transfer over local bus (GPMC) of OMAP4460.

 

Can you please let us know form where we need to take help of FPGA(agl400igloo series from actel ) and Processor interface details.  

 

Regards,

Ruchin

  • 0
    TI__Expert 5515 points

    Hi Ruchin,

    I think you are seeing at the External DMA Requests Use example, but it might be possible to use the GPMC module as master to communicate with the FPGA and use the S_DMA_3 (GPMC_DMA) channel, in that case you don't need the FPGA to request DMA. Right?

    About the help in the FPGA you would need to contact the manufacturer to get help at that side.

  • 0
    TI__Intellectual 1300 points

    Hi Ruchin,

    It is not clear what you are trying to do. It seems you are looking more information on OMAP4460 GPMC interface. Have you referred OMAP4460 TRM GPMC chapter? Here is the link to the TRM http://www.ti.com/pdfs/wtbu/OMAP4460_ES1.x_PUBLIC_TRM_vT.zip

    Regards,.Satheesh