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AM335x LCD Resolution

Jithin Shyam
Intellectual 485 points

Dear Team,

    As per the TRM Maximum resolution supported by AM335x is 2048x2048, Now we experimenting WXGA 1366x768, is it possible to achieve this resolution in 565Mode. what is overhead of microprocessor when its running on 1366x768 resolution, whether the performance of board become poor when running other application.

Regards

Jithin

  • 0
    TI__Guru**** 393215 points

    Hi Jithin,

    Pay attention to the fact that the maximum pixel clock frequency on AM335X is 126.5MHz. This will limit the frame rate for larger resolutions. As for performance, the AM335X LCD controller has its own dedicated DMA channel to retrieve data from the frame buffer. Also, the Linux frame buffer is implemented as a dual buffer operating in Ping-Pong fashion, so that one buffer can be reloaded while the other is being currently displayed. MPU is only involved in loading data into the frame buffer.