Hi,

I am currently using the AT91SAM9G45-EKES and have successfully used the PDC to download data from a Serial Flash memory and the LCDC to control a TFT LCD Controller.

However, when I try to use the LCD while reading data from the SPI Flash with the PDC our data gets corrupted. If I lower the LCD frame rate (<15 fps) or if I lower the SPI clock (<15MHz) the problem goes away. Am I facing some sort of DMA congestion problem? Can someone confirm that the bandwidth from a single DDR2 16bit memory at 133MHz is enough to do both things at the same time?

Thank you in advance,

Albert