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Altera_Forum's avatar
Altera_Forum
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16 years ago

scaler problem

Hi, I have another problem about scaler, it's right that adding a control port to scaler makes the input resolution changable, but some resolution doesn't work. My data path is listed below. Clo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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If all configurations are OK, maybe you have memory bandwidth problem?

The frame buffer need to access the memory much more frequently at 1600 x 1200 then in 1280 x 1024.

At 1600 x 1200 x 24bit x 60Hz input & output to the frame buffer you need very high memory bandwidth.

Can you give us the details of the SDRAM (DDR) you are connecting to the FB?

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Thanks for the feedback,

Attached please find settings for the SDRAM.

Please let me know if any more info is needed.

Thanks,

Mike