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vinod.sajjan
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Registered: ‎08-28-2017

How to set frame rate in VDMA

Hi Folks,

 

I am using VDMA for read and write to DDR3.

 

I am sending the image data from image sensor 4 frames per second, in this case how to handle the data in VDMA.

 

I need known how to configure the VDMA for frame rate.

 

Please suggest me regarding this.

 

Thanks and Best Regards

Vinod Sajjan

 

 

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u4223374
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Registered: ‎04-26-2015

The VDMA doesn't need to know anything about framerate. Framerate is set by the camera; most cameras just output data at whatever speed they want to with no back-pressure (ie the VDMA block has no way to adjust the speed of the camera).

 

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vinod.sajjan
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Registered: ‎08-28-2017

Hi @u4223374,

 

Thank you for your replay.

 

Okay.

But I have doubts.

->If, I write the data into DDR3 through VDMA only one time means how many time VDMA reads the data from DDR3?.

 

-> It is possible to make DDR3 read operation event base through VDMA?, means If only one time  write data to DDR3 through VDMA  than only one time i have to read.(1 write means 1 read).

 

please suggest me regards these doubts please do needful.

 

Thanks and Best Regards

Vinod Sajjan

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