@BkKCoins - Just looking at your BOM on github, can't see the magnetic inductor beads that Avalon have per chip? (I'm trying to work out the current rating needed)
No I missed the ferrite beads as was pointed out up thread a bit. Looks like my initial test board will let me see how it works without those, and later I'll likely add them to a revised board. I can patch a few into the board manually and then scope it to see just what it does, though I expect 300MHz noise isn't going to show as much on my scope. I'll see what I can get. Presumably having them will curb EMI emissions.
There is no documentation on how much current AVDD requires. It must be less than 600mA/10 or 60mA each chip since I think that's the regulator rated max. My guess is that it's a fair bit less, maybe 30mA or less per chip. BitSynCom hasn't said quack, despite my asking, and no one seems to have measured the 3.3V supply line on Avalon boards (which would give a ball park split between this regulator and the I/O lines).
--- Re: other posts above.
I will be testing mostly using my Notebook (Core2Duo) but I have both a RasPi and TL-WR703N on the way. The RasPi will be here this week probably along with a second batch of needed parts (mostly capacitors but also the 1.2V buck reg and some other important stuff). The TL-WR703N will be a couple weeks probably as I ordered it later and paid lowest price to get it here (slow boat from China, literally).
I think the RasPi will make a nice little host and it's pretty cheap. I believe cgminer is already working on that but I haven't really looked into it yet. If there is MinerPeon as well, that's another option, and I can make a driver for that if it doesn't take too much time. The TL-WR703N is cheaper and has some USB flakiness that kind of makes it more hassle but has the advantage that it has Wifi built in so you could have a rig placed somewhere with no LAN cables. I guess a RasPi could too with a Wifi dongle attached. The TL-WR703N was only $23 and includes a power adapter and Wifi but requires a USB hub to function with non-High Speed USB devices but doesn't need an SD card. So it's all kind of mix n match, play around, see what goes best.
This morning I got a PIC wired and tested some basic code and captured output on Logic Analyser. It all worked fine. LEDs blinked and bits twiddled correctly. I'm going to move on next to trying to get it to attach as a USB device and see how well that goes. After that I'll be testing the real Klondike code as it initializes and detects ASIC presence, which involves pushing fake work. It won't find any yet! But I'll force it to think it has some and then watch as it pushes dummy work out. I'm hoping in a few days to have fairly functional firmware, and then turn attention back to the cgminer driver.
