Since AD does support DVI and HDMI, is there any chance that AD will get into the business of supporting MIPI and/or DisplayPort to parallel type conversions? Or, a MIPI and/or DP bridge to, say, USB 3.0 or PCIe 2.0? These things are sorely needed.
We do have some parts that have MIPI interfaces on them actually. They are NDA parts though so we can't discuss them on the forum.
We don't currently have any DisplayPort products but may have them in the future.
At your recommendation, I have been looking at the ADV7401. We have
been using the ADV7441A in another design, and it certainly looks
like the 7401 is cut from the same blot of cloth. One thing I notice
in the 7401 manual is that it presents a much more complete and
somewhat more coherent explanation of the DDR mode.
The 7441 manual is very sketchy and incomplete. We had considered
using DDR mode in the 7441 design but weren't sure how well it was
supported. We are still interested in doing this because the device
the 7441 is connected to has support for DDR and it would allow fewer
line transitions on a somewhat noisy board.
Is it the case that the DDR state machine in the 7441 and 7401 are
essentially the same?
What do I want to do on the 7441? Just do 16-bit YCrCb on 8 data
lines, with a new data on each clock edge. Ideally, both with the
SDP and the CP, but certainly the CP.
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I'll check but I believe the interface is probably the same.
Yep, they behave the same way.
OK, thanks very much!!!
Any chance of getting access to the MIPI stuff?
As I said in the PM-- you'll need to go through your local sales/FAE. I'm not sure how widely they are selling those parts.
I asked you before if the 7401 and 7441 had the same behavior on the
Now, how about the last of what you might call the trio, the ADV7181C.
Why do I ask? Well, I was thinking of using the 7401, but I just
discovered that the DVI input isn't really a DVI. It needs an
external decoder. That's no help at all. I am cramped for space and
can't use the 7441, so I will have to give up on DVI.
What do I need?
Two modes: 8-bit DDR (YUV)
and 12-bit SDR RGB (4bits/color)
I could live with 12-bit SDR RGB (4bits/color) only if I had to.
I have to have CP and would like SDP too.
And, at least 110 MHz.
ADV7441A isn't really recommended for new designs anyway. A new design with that functionality should use ADV7842-- you might check if it'll fit in your space. It's smaller than ADV7441A since it's a BGA.
None of our parts have a 4-bits per color mode that I'm aware of. 8-bit YCbCr 4:2:2 DDR is available though on ADV7181C.
You might look at ADV7610 solely for the DVI-- it's pretty small.
OK, I will look at the other parts.
I know that they don't have 12 bit, but they do have 24-bit. I just
take the top 4 bits
Ahh.. then any of them can handle that!
Sorry to bother - one last part: I wanted to have a DVI port and I
can afford a 100 TQFP.
The AD9380 would do this. And it is in a QFP, not BGA
It appears that the 9830 does not include the HDCP keys, so I would
not have to worry about
HDMI licensing. Is that correct? We have no interest in HDCP.
Thanks for suggesting the other part. But, my inner layers are
pretty packed up in that area
and I can't drop a BGA array into the middle of that. It won't work.
AD9380 is basically unsupported and on track to be obsoleted soon. AD9880 is the no key version but it is in the same boat. Most of the receivers come in a no key version. ADV7611 is the smallest recent non-BGA receiver.
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