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
Is Reflesh-rate correct at the following understanding?
Is there any point that something must take care about others?
Best Regards,
George
解決済! 解決策の投稿を見る。
Looking over Figure 33-13 (LCD Interface Signals in DOTCLK Mode)
of the i.MX28 Reference Manual – refresh rate formula in Your case
is correct. Also, please refer to section 33.2.8.1 (Code Example) about
LCD initialization, where 320 x 240 resolution is configured via :
VSYNC_PERIOD = 280 and HSYNC_PERIOD = 360 ; back and front porch
periods are taken into account.
Have a great day,
Yuri
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Looking over Figure 33-13 (LCD Interface Signals in DOTCLK Mode)
of the i.MX28 Reference Manual – refresh rate formula in Your case
is correct. Also, please refer to section 33.2.8.1 (Code Example) about
LCD initialization, where 320 x 240 resolution is configured via :
VSYNC_PERIOD = 280 and HSYNC_PERIOD = 360 ; back and front porch
periods are taken into account.
Have a great day,
Yuri
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Thanks,
I investigate with a customer more based on your advice.
BR,
George