To use AD9984A for coverting VGA signal to 24-bit RGB to the Microprocessor for further processing; which bits in the 30-bit RGB of AD9984A are to be discarded in schematic of hardware

Question

I want to use AD9984A for coverting VGA signal to 24-bit RGB to the Microprocessor for further processing. Which bits in the 30-bit RGB of AD9984A are to be discarded in schematic hardware? 
 Whether AD9984A can be used for getting 24-bit RGB data? I want to store the input VGA to Microprocessor by converting to 24-bit RGB. Since AD9983A is going obsolete I cannot use in my new design. Hence AD9984A is planned to be used. 
 (Is this device suitable for VGA to 24-bit RGB conversion , if not please advice with any suitable Analog Devices IC)

DharaniS · Accepted Answer

Hi, 
 Yes, your understanding is correct. We can't receive VGA input over HDMI/DVI in ADV7401 and ADV7482 because there is no HDMI Rx port. 
 
 AD9984A can be the good choice for VGA to RGB 24-bit converter by discarding the LSBs. It is having HDMI Rx to receive VGA input.

You can also go through our product page for more information: https://ez.analog.com/video/w/documents/808/adv7401-design-support-files?queryID=30207e404e7b6ae589cc8f03180d8f03&objectId=90e0d93c-1de1-439e-812b-fd5dbad39fa4&eztype=Docs%20%26%20FAQs

Thanks,
Dharani S

Thanks, Dharani S)

Electronic Design Services - PartnerZone

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To use AD9984A for coverting VGA signal to 24-bit RGB to the Microprocessor for further processing; which bits in the 30-bit RGB of AD9984A are to be discarded in schematic of hardware