DA1469x's LCD display resolution

Hi Donny Chiu,

There is not any restriction regarding the resolution. Apart from the color information that is driven on the data lines, LCDs need some control signals which vary between interfaces. In case of Classic Parallel interface, you should make sure that the WXGA is compatible with the following signals:

• Clock signal is synchronized with the data and at each period of the clock a new data set is produced.
• DE (Data Enable) signal is used to indicate the validity of data. It is synchronized with the
• HSYNC signal, but they do not have the same duty cycle.
• HSYNC signal is the horizontal synchronization signal which is asserted for every line of the frame sent.
• VSYNC signal is the vertical synchronization signal which is asserted for every frame sent.

The LCD controller will populate the signals according to the interface that is selected. The data will be handled by a dedicated DMA with image geometry awareness. The only restriction would be, if the images came stored either into the RAM or FLASH memory. Take care that a secondary PSRAM is also available. In the parallel mode, only RBG222 is supported, so you will have 2 bits/color.

Thanks, PM_Dialog

Thanks.

Not sure if I have to post a new thread.

How fast can the LCD clock and data runs, I need to find out the frame rate if need to output 1280 x 800 with RBG222 format.

Donny

Hi donnychiu,

In serial interface the maximum clock can be up to 48MHz and in parallel interface up to 96MHz.

Thanks, PM_Dialog