Re: [LAD] FOSS Ethernet Soundcard

Patrick Shirkey: ... Not the faintest idéa. I avoid it if I can. Not much decided for yet. I have e.g. got response [1] and [2]. In summary: . AT32NGW100 [3] seems to be an affordable cpu-card we can start with . 4/8/16 channels of 24bit/48kHz perhaps 96kHz My preliminary roadmap is in [4]. ++ On the mechanical side, the system I will design has to fit into industrial enclosures like [5]. I'm looking into using a 6U, probably half to quarter width 19" card frame system. With card size 160x233mm, or I might shrink that to 100x233mm to make them more easily fit into an enclosure. I will need the 233mm height for all the i/o connectors. It feels like connectors will take more space than the electronics, well, maybe not. But connectors will need more space than what a single 3U eurocard can provide. The reason for a card frame system is that the user should be able to easily pull out or insert a card for repair or upgrade. This implies a backplane, and I will probably use something VME-like so one CAN buy a readymade backplane if one wish to. A card frame system gives you an instant extra cost which might no be that useful for an audio application. But hopefully one can reuse blocks of schematics and pcb designs if someone else would like a single card or a stacked system solution. I'm currently looking into the cost for the card frame, and I might do my own drawing and ask the local smithery for the sheet metal work to decrease cost and to make it fit into the enclosure. Unless someone convinces me on something else, I will in the end use the AT91SAM9260 for my project. I don't see that that should hinder anyone else to use something else if we can do a suitable cut between the "cpu-part" and the "i/o-part". Well, in a backplane based system you already have that. This processor runs at ~200MHz, so you cannot do that much prosessing on it, but it can run linux. I want an Compact-Flash socket on the cpu-card for easy software deployment. ... If you know the tradeoffs, please decide. "My" processor has usb-2.0 onchip (both "host" and "device" port), but only at 12Mbps. To use something faster we need to have a separate usb chip. I don't think the sam9260 will be sufficient for driving the usb at 480Mbps, but I might be wrong. ... Same here, and Folderol [2] also had some equipment. So far, it seems that it is you, me and Folderol. Since your company is based in Tailand, and mine in Sweden, I think we have to split it, at least per continent for common electronic components, unless we are beginning to sell in volumes. Pcbs could be a good thing to share. I'm going to get silkscreen equipment, so when we go beyound breadboard and possible wire/wrap, I could provide thoose (without plated via's tough). Me too. But I will not maintain webpages. That is open for someone else. We have to have something going before one knows if any funds are worthwile. Regards, /Karl [1] http://lists.linuxaudio.org/pipermail/linux-audio-user/2009-November/064959… [2] http://lists.linuxaudio.org/pipermail/linux-audio-user/2009-November/064988… [3] http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102 [4] http://lists.linuxaudio.org/pipermail/linux-audio-user/2009-November/064962… [5] http://www.rittal.com/products/ArtikelDatenblatt.asp?ArtNr=1360500&lang… ----------------------------------------------------------------------- Karl Hammar Aspö Data karl(a)aspodata.se Lilla Aspö 148 Networks S-742 94 Östhammar +46 173 140 57 Computers Sweden +46 70 511 97 84 Consulting -----------------------------------------------------------------------