gemini86
Well-known member
I don't see how that helps when it only outputs 8 adat signals. It's seems to just add complexity. Our am I missing something?
volker said:I don't think this is bound to happen. Then we're back to programming a driver and might as well go the LAN way, which has the advantage of already available hardware. Also, designing a PCI(e) card isn't the most trivial task in the first place. That's why I was looking at MADI, because it eliminates these two things I can't (and don't want to) do myself.
signalflow said:It looks like it has 8 adat ins and 8 adat outs giving 64i/o of conversion from adat to madi. Still, wouldn't mind bypassing the adat portion all together and just having a madi.
-Casey
dmlandrum said:I've already been doing a bit of research. One of the obvious problems is that I have yet to find an FPGA that can run faster than 400MHz or so, and that's not even taking propagation delays into account, so directly writing to a 1GBit line is out. I did find some shift registers and muxes that can operate at those speeds, so the obvious solution is for the FPGA to output data in parallel to that kind of device.
Andy Peters said:The FPGA has a special clock multiplying circuit that can create a serializer clock at the required high frequencies; it's only for the I/O blocks and isn't distributed throughout the FPGA on standard clock-routing resources. It's a multiple of a word-rate clock, so you load the serializer on the slower clock and the hardware serializes the word and shifts it out.
guitarguy12387 said:There's lots of ethernet IP out there... why would you want to code your own? No sense reinventing the wheel. Especially for the hard stuff!
dmlandrum said:Well, one fellow much earlier in this thread had a rudimentary driver already working, but he kinda dropped out of the whole thing, if I read it right. That's largely why I was asking if the Ethernet option was dead. I was kinda hoping I could rekindle that side of the project as well.
The fact of the matter is, I'll probably end up buying a Delta 1010. I am NOT going to spend $700 on a card with no converters which I will then have to DIY.
(But really, M-Audio? You're still charging $600 for a 15-year-old design? Sheesh.)
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