FAQ Display Resolutions

Display Resolutions


1.  What is the minimum and maximum resolution supported by Intel® EMGD?

Please refer the User guide, Release note and PRD/TPS of respective platform for minimum/maximum supported display resolution and other supported features.


2.  What is the minimum and maximum custom active resolution supported by the integrated LVDS display controller on Intel EMGD?

Theoretically, any timing mode that yields a pixel clock frequency between 20 MHz and 112 MHz mentioned by the respective chipset and processor design specifications could be supported by Intel EMGD. To determine if a particular timing mode can be supported, use the following formula as an example to determine the pixel clock frequency and then determine if it is between 20 MHz and 112 MHz:

Using 720 x 480 at 60 Hz as an example:

Pixel clock frequency = HTOTAL * VTOTAL * Vertical Refresh Rate / 1000000

HACTIVE = 720 pixels / line

HBLANK_BACK PORCH = 10 pixels / line

HBLANK_FRONT PORCH = 128 pixels / line

HTOTAL = HACTIVE + HBLANK_BACK PORCH + HBLANK_FRONT PORCH

HTOTAL = 720 + 10 + 128 = 858 pixels / line

 

VACTIVE = 480 lines / frame

VBLANK_BACK PORCH = 19 lines / frame

VBLANK_FRONT PORCH = 26 lines / frame

VTOTAL = VACTIVE + VBLANK_BACK PORCH + VBLANK_FRONT PORCH

VTOTAL = 480 + 19 + 26 = 525 lines / frame

 

Pixel clock frequency = HTOTAL * VTOTAL * Vertical Refresh Rate / 1000000

Pixel clock frequency = 858 pixels / line * 525 lines / frame * 60 Hz / 1000000

Pixel clock frequency = 27.027 MHz

 

Pixel clock frequency > 20 MHz so 720 x 480 at 60 Hz can be supported by Intel EMGD via the Configuration EDitor (CED) application

 
 

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