I know that ADV7611 convert HDMI to VGA & audio..
but i want to know how can converting HDMI to LVDS for display LCD resolution 800 X480??
The ADV7611 has a TTL output so any TTL to LVDS converter should work fine, such as the ADN4663 http://www.analog.com/en/interface-isolation/lvds/adn4663/products/product.html
The ADV7611 provides audio extraction and video decoding from the HDMI stream.
I'm not sure if this answered your question
thanks for your answer!!
i really want to know that ADV7611 is available for 800 x 480 LCD.
in ADV7611 datasheet , I can't find 800 X 480 LCD resolution !!
if it is possiable , How can i set the ADV7611 register ??
The ADV7611 should work fine for 800x480p
I've attached a set of scripts. This ADV7612 and ADV7611 have the same register sets. Look at script 6-1d, it shows you how to configure the 7611 for HDMI inputs of the frequency you want.. You can ignore the write to address 72 since they go to the ADV7511 on the eval. board. You may have to tweak the output format and justification to match your system
The chip will handle almost any input format as long as you don't exceed the specified clock rate.
Would the combination of ADV7612 and ADN4663 support resolutions of 1080P? We're looking a flexible design to handle LVDS panels up to dual channel with 1080P support.
The question is really what is the LVDS standard your panel is supporting.
LVDS is only a signalling method; a different one than TTL. If you are from
networking background - you may consider LVDS as a physical low-level
layer, above which there is yet another "encapsulated" layer - e.g. openLDI.
OpenLDI constains serialized data.
The ADN4663 is in fairness a TTL to LVDS converter but not a serializer.
Other than the number of channels and timing I thought all "LVDS LCD Panels" were the "same"? The original post was asking about the HDMI to LVDS conversion and we would like to do the same but we want support for 1080P, specifically, something like the LG LP156WF3 which requires the most bandwidth out of most of the panels I've looked at. This panel has the following features:
I know there are some 36-bit panels but those are for larger sizes and from what I've seen most panels are 18-bit so I'm thinking there's going to be some cost vs feature decisions to be made.
I had a quick look into the PDF and it seems to me that this panel requires special type of LVDS driver. There are two LVDS buses - even and odd. If you look into OpenLDI or FPD (Flat Panel Display) standards - it uses 4-5 LVDS channels accompanied by a clock and the whole data is serialized. I think that it is probably the best to contact panel manufacturers and ask them what about LVDS conversion it requires. It might be a PC standard that is built into relevant laptop SoC.
in general when it comes to ADI solutions - we have LVDS/OpenLDI driver in ADV7186. I'm not sure but I think it can do max 720p or 1080i. That part is under NDA and shortform note is available on the web. Again - as I said - our part offers openLDI that is different to what we have in the PDF.
Alternatively you may try using an FPGA with hardware serializer to serialize data, but it will be an expensive solution. Open-market available "parallel to FPD converters" will most likely not work here as well. You may try googling "parallel to FPD" to get some more information about LVDS for flat panel displays.
The signalling of that panel is representative of just about every LCD panel which a resolution of 1920 x 1080 or higher. As far as I can tell this signalling is part of FPD, see a TI part as a comparison, http://www.ti.com/lit/ds/symlink/ds90cf388a.pdf
Yes, it looks like a driver you may need to use. ADI parts do not support it. Please aware of that you may need to split even- and odd- pixels spearately.
To get even- and odd- pixels separately you may try looking into ADV7619. It features 48-bit wide output pixel bus that has 24-lines dedicated to even
and 24-lines dedicated to odd pixels. (Modes such as 0x54, 0x94/0x95/0x96)
See page 21:
Mode 0x54 is a 444 mode that can be used for either 444 YCrCb or 444 RGB. (most likely the one you may want to try).
thank you for your answer..
i have other question !!!
i'm using ADV7611 to separate image and audio from HDMI. I know that ADV7611-Pversion doesn't have HDCP-KEY in internal ADV7611 and HDMI transmits Audio and image signal encryption by HDCP.
Because of it, On receiving side, we must use HDCP-key that i know.
anyway, if i don't use HDCP-KEY, Couldn't i separate audio and image signal from HDMI??
i really want to know what to use HDCP for receiving HDMI signal.
Without HDCP keys, you can't even receive any encrypted data. They Transmitter won't send it so there is nothing to separate.
thank you for your reply.
if i transmit unencrypted files through the HDMI cable, can i separate audio and image signal using ADV7611-P??
Yes, you can use ADV7611BSWZ-P to receive unencrypted DVI/HDMI signal and output digital video and digital audio.
I hope this helps!
Just to confirm, the ADV7619-P could be used the split an unencrypted HDMI signal and the video output could be used to directly drive a LCD panel like I mentioned above?
If you need to receive unencrypted 3GHz (4K x 2K) DVI/HDMI signals and output digital video and digital audio, you can use ADV7619KSVZ-P.
Thanks. Definitely don't need to support anything above 1080P but need to support even/odd LVDS output. Would the ADV7611 work or does the even/odd bump me into the ADV7619?
Can you start a new thread for your question?
I know that ADV7613 convert HDMI to LVDS & audio..
I want to know the output resolution of lvds we will get??
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