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DS90UB928Q-Q1: DS90UB928Q-Q1 support max resolution.

fangxing sun
Intellectual 310 points
Part Number: DS90UB928Q-Q1

Dear sir

Our project wants to use FPD-LINK connector Main unit and LCD unit. Our LCD can select 1280*960 or 1280*800, DS90UB928Q-Q1 whether can support or not.

I also want to know DS90UB928Q-Q1 max resolution.

  • 0
    TI__Guru** 107510 points

    Hello,

    the UB928 supports a max PCLK of 85MHz.

    You can calculate your required resolution if it fits within this PCLK using the following formula:

    PCLK = Htot x Vtot x Fps x blanking

    For example, 1280 x 960 x 60 fps x 1.2 = 88.5 MHz which is not supported, but using the same resolution with 45 fps will give you 66.5 MHz which is supported.

  • 0 in reply to Hamzeh Jaradat
    Intellectual 310 points

    Dear Hamzeh

    Thanks for your fast response. I still have some question.

    1. Why u select blanking value is 1.2, It's estimated value. 

    2. If we select 1280*960*50fps, PCLK=73.72Mhz, It whether influence I2C or I2S over FPD_LINK function.

  • 0 in reply to fangxing sun
    TI__Guru** 107510 points

    Hi Tyrael,

    1) I just choose 1.2 because it is a common number, but it depends about your application, so it can be more or less than this number.

    2) Increasing your PCLK means increasing the bandwidth and the transferred data, and decreasing does the opposite.