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The refre rate change of MX287 LCDIF

Question asked by George Fukutomi on Apr 12, 2015
Latest reply on Apr 14, 2015 by George Fukutomi

Dear All,

 

Our customer is doing the product design using i.MX287 currently.

Their product is used with 3.5 inch LCD (320x240).

 

They are going to set the LCD Reflesh-rate to 90Hz.

However, they see 56Hz Reflesh-rate.

 

Setting the following in DOTCLK mode

  • HW_LCDIF_VDCTRL0.HALF_LINE = 0
  • HW_LCDIF_VDCTRL0.VSYNC_PERIOD_UNIT = 1

 

Is Reflesh-rate correct at the following understanding?

  • Reflesh-rate = HW_LCDIF_VDCTRL1.VSYNC_PERIOD x HW_LCDIF_VDCTRL2.HSYNC_PERIOD x Period of CLK_DIS_LCDIFn

 

Is there any point that something must take care about others?

 

Best Regards,

George

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