I'm trying to calculate timing paremeters for imx53/51 WinCE 7 BSP. The LCD is DE without HSYNC and VSYNC and has such characteristic:
Minimal rating / Typical rating / Maximum rating
Data setup time 6ns / - / -
Data hold time 6ns / - / -
DE setup time 6ns / - / -
CLK freq 29.40MHz / 33.26MHz / 42.48MHz
CLK period 23.54ns / 30.06ns / 34.01ns
CLK pulse duty 40% / 50% / 60%
DE period 1000 / 1056 / 1200
DE pulse width - / 800 / -
DE frame blanking 10 / 45 / 110
DE frame width - / 480 / -
Values needed in Display driver are:
Vertical Sync width (in vertical lines)
Vertical Start Width (in vertical lines)
Vertical End Width (in vertical lines)
Horizontal Sync Width (in pixel clock cyles)
Horizontal Start Width (in pixel clock cyles)
Horizontal End Width (in pixel clock cyles)
Pixel Clock Cycle Frequency: IPU clock 133Mhz
Pixel Data Offset Position
Pixel Clock Up, in ns (if tick is 7.52ns(133Mhz))
Pixel Clock Down, in ns (tick is 7.52ns(133Mhz))
How to calculate those values? I presume that Pixel clock frequency should be 33260000, Pixel data offset position 0, Vertical sync Width and Horizontal Sync Width can be set to 1 as LCD is DE, but how to properly set the rest of the values?
