Hello! I am looking for NTSC/PAL to YCrCb 4:2 decoder. Is ADV7280 capable to scale input frame? And is it possible to transmit video flow from 4 channels to the same screen?
To be more clear, what is the output video resolution you are expecting. The ADV7280 is an SD Video Decoder that output digital video data in an 8-bit YCrCb format over a TTL link. It will not do any scaling. You can look in to our VSP product ADV8005 for scaling http://www.analog.com/en/products/audio-video/analoghdmidvi-interfaces/analog-hdmidvi-display-interfaces/adv8005.html#product-documentation
The ADV7280 has an i2p block, so therefore the input frame rate is different from the output frame rate when the block is enabled.
The part is capable of handling four analogue CVBS inputs, but the ADC can only process one of the four inputs at a time. So four inputs cannot be seen at the output at same time.
You can use 4 ADV7280 in your design and feed the output to a processor that is capable of combining the images on one screen. You could use and FPGA design to carry out the processing such that in the FPGA you have a video FIFO large enough to handle the outputs from each ADV7280 and create a master clock timing to synchronize all the video outputs, as well as positioning each video frame (X and Y) coordinates before outputting to a screen.
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