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| 00:33 | Bertl_oO | hey juand! how's going?
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| 02:19 | Konstantin | Dont know if some one is online(awake), just a question, im thinking about building a HDMI to SDI and SDI to HDMI, it is not the easiest thing to do i know. But just wanted to know what you guys think of that and if you have any experience with doing similar things. I know allot about Electronic design but im a analog guy, was never so into FPGAs etc. but this would be something to learn from.
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| 02:20 | Bertl_oO | yeah, you definitely need an FPGA for this kind of stuff
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| 02:22 | Konstantin | i know
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| 02:22 | Bertl_oO | do you have a deisgn for the actual conversion process? do you want to convert on the fly or buffer a whole frame?
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| 02:23 | Konstantin | but the question is how big/fast it has to be
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| 02:23 | Bertl_oO | that depends on the resolutions you want to support
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| 02:23 | Konstantin | on the fly would be nice to save the memory and therfor alot of pins
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| 02:24 | Konstantin | for a start 1080 would do the trick
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| 02:24 | Bertl_oO | p25/p30/p60/p120? :)
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| 02:24 | Konstantin | 60p
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| 02:25 | Bertl_oO | so that is about 1.5Gbit encoded HDMI data
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| 02:25 | Konstantin | jup about the 3g
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| 02:25 | Bertl_oO | (per TMDS channel, that is)
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| 02:25 | Konstantin | standart
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| 02:26 | Bertl_oO | that can be done without MGTs for output, but probably tricky for input unless you want to use specific chips
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| 02:26 | Konstantin | hmm
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| 02:26 | Bertl_oO | are you planning an FPGA only solution?
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| 02:27 | Bertl_oO | if so, I would make sure that you have at least 8 MGTs
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| 02:27 | Konstantin | Probably ore Interface with an AD chip on the HDMI site
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| 02:28 | Bertl_oO | yeah, that's the other way to address that
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| 02:28 | Bertl_oO | have specialized HDMI/SDI in/out interface chips
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| 02:28 | Konstantin | hmm 8 hope to get a sens full page
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| 02:28 | Bertl_oO | in this case the FPGA doesn't need to be fast or feature MGTs
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| 02:29 | Konstantin | ok that is what i thougt for using such chips
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| 02:29 | Konstantin | but have to see if i can even get them
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| 02:29 | Bertl_oO | but of course, you lose some flexibility
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| 02:30 | Konstantin | rigth too
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| 02:30 | Bertl_oO | yes, they are readily available, from analog devices, the 7611 and 7513
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| 02:30 | Bertl_oO | for SDI the Texas Instruments LMH* series
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| 02:31 | Konstantin | yes the HDMI
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| 02:31 | Bertl_oO | LMH0340 is probably the best choice here
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| 02:32 | Konstantin | did not knew the LMH series
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| 02:32 | Konstantin | ohhh yes thats what i was looking for the LMH seams nice
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| 02:37 | Konstantin | i will look into it witch solution migth work best, to do it in one FPGA might even be ceaper or using combination some other Serializers can be "missues" to serialize SDI
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| 02:38 | Bertl_oO | keep us updated on your progress
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| 02:41 | Konstantin | i will could be usefull maybe for some of your stuff, and maybe later a more powerful version but 1080p 60fps is good for a start ^^
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| 02:41 | Konstantin | se ya later
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| 05:34 | Bertl_oO | off to bed now ... have a good one everyone!
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| 11:50 | Bertl | morning folks!
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| 14:58 | Bertl | off for now ... bbl
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| 20:22 | Bertl_oO | off to bed now ... have a good one everyone!
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