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[ADV7613] Relationship between required output port number and pixel clock frequency.

Question asked by Tamu on Jun 28, 2018
Latest reply on Jul 3, 2018 by Tamu

Hello,

 

I have a question about ADV7613.

 

ADV7613 has two Open-LDI output ports.
The user can select using only one port or using two Open-LDI output ports by register setting.
About whether he has to use two Open-LDI output ports or it's good for only one output port,
I think it depends on the pixel clock frequency.


For example,
 In case of 1280x720p60, the pixel clock frequency is 74.25MHz.
 I think we can use only one port for the 1280x720p60 video output because the pixel clock frequency

 (= Open-LDI LVDS clock frequency) is within "OpenLDI Output Clock Range 25Mz - 92MHz" on the datasheet spec.

 

 In case of 1920x1080p60, the pixel clock frequency is 148.5MHz.
 I think we has to use two ports for the 1920x1080p60 video output because the pixel clock frequency

(= Open-LDI LVDS clock frequency) is out range of "OpenLDI Output Clock Range 25Mz - 92MHz" on the datasheet spec.

 

Is this way of thinking right?

 

Thank you!
Best regards.
Tamu

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