EDMA burst transfer data from DSP to FPGA by GPMC

qijun wang1

Prodigy 20 points

Other Parts Discussed in Thread: DM3725

Now we use EDMA transfer data from DSP to FPGA by GPMC in chip DM3725, GPMC configuration is as follows:

1 data length is 16bits .

2 GPMC busrt mode enable

3 burst size is 16x16bits

And we also want enable EDMA burst mode , But we don't know how to configure EDMA register to make it work in burst mode.

Thanks a lot!

over 12 years ago

0 Cvetolin Shulev-XID over 12 years ago

TI__Guru 65405 points

Hi,

You can use as start point the Technical Reference manual - chapter 10.1.5 GPMC Basic Programming Model. Pay attention of the GPMC_CONFIG1_i registers description.

Tsvetolin Shulev

0 qijun wang1 over 12 years ago in reply to Cvetolin Shulev-XID

Prodigy 20 points

Hi,

Thank you for reply , but my problem is not how to config GPMC interface , but how to config EDMA to cooperate with GMPC to get 16X16bits burst? For GPMC interface I have known how to config GPMC register to enable the burst chansfer.

0 Renjith Thomas over 12 years ago in reply to qijun wang1

Guru 31670 points

Wang,

Check the SDMA register DMA4_CSDPi -> for source and destination burst sizes. Hope this resolves your query.

0 Muez Berhane Reda over 12 years ago in reply to qijun wang1

Prodigy 130 points

Hi qijun

I also want to do the same thing. Did you figure out how to do it,

regards,

Muez

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EDMA burst transfer data from DSP to FPGA by GPMC