AVR32 destiny or destination (Ulf Samuelsson RSVP)
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From: larwe on 3 Jun 2010 15:14 On May 31, 11:26 am, Chris H <ch...(a)phaedsys.org> wrote: > Having seen your posts over the last decade you seem to have trouble > with all silicon companies and their distributors. The common factor is If you had actually read and comprehended them, instead of merely looking at them through the "I hate OSS users" glasses that are perpetually glued to the bridge of your nose, you would realize this isn't true. TI and Microchip for instance are very responsive (unfortunately in the latter case, mostly responsive in the sense of "we know our product's design kinda sucks"). Of course, people in general rarely post "I had a great experience" stories. Atmel's parts are good, but their app notes are horrendous and there are risks with supply, die shrinks and discontinuation, as many here will testify. And sampling is worse than hit or miss. As a private party I would say it is impossible to get samples at all. As a large company it is possible to get 5pcs relatively easily, but special hoops need to be jumped through in order to get more.
From: rickman on 3 Jun 2010 20:13 Ulf, Once again, I don't find the Atmel web site easy to quickly get a feel for the capabilities of the parts so let me ask you. I see on the AVR Solutions page that a number of the AVR32 devices have a "Hi-Fi stereo Audio DAC", but I don't see any mention of a corresponding ADC. Is that missing from the AVR32 parts? If I can find an affordable MCU in the right package with a audio quality stereo CODEC, that would solve a problem of mine. Is the AVR32 the solution to this problem? Rick
From: -jg on 4 Jun 2010 05:32 On Jun 4, 12:13 pm, rickman <gnu...(a)gmail.com> wrote: > Ulf, > > Once again, I don't find the Atmel web site easy to quickly get a feel > for the capabilities of the parts so let me ask you. I see on the AVR > Solutions page that a number of the AVR32 devices have a "Hi-Fi stereo > Audio DAC", but I don't see any mention of a corresponding ADC. Is > that missing from the AVR32 parts? If I can find an affordable MCU in > the right package with a audio quality stereo CODEC, that would solve > a problem of mine. Is the AVR32 the solution to this problem? Mostly Audio Quality codecs are done as separate chips, there seem a few available sub $2. If you have a reasonable power supply budget, Atmel have just released AT73C246, which is a Codec + Regulators, so could swallow some other regulators ? http://www10.EDACafe.com/nbc/articles/view_article.php?section=ICNews&articleid=830169 -jg
From: rickman on 4 Jun 2010 07:21 On Jun 4, 5:32 am, -jg <jim.granvi...(a)gmail.com> wrote: > On Jun 4, 12:13 pm, rickman <gnu...(a)gmail.com> wrote: > > > Ulf, > > > Once again, I don't find the Atmel web site easy to quickly get a feel > > for the capabilities of the parts so let me ask you. I see on the AVR > > Solutions page that a number of the AVR32 devices have a "Hi-Fi stereo > > Audio DAC", but I don't see any mention of a corresponding ADC. Is > > that missing from the AVR32 parts? If I can find an affordable MCU in > > the right package with a audio quality stereo CODEC, that would solve > > a problem of mine. Is the AVR32 the solution to this problem? > > Mostly Audio Quality codecs are done as separate chips, there seem a > few available sub $2. > > If you have a reasonable power supply budget, Atmel have just released > AT73C246, which is a Codec + Regulators, so could swallow some other > regulators ? > > http://www10.EDACafe.com/nbc/articles/view_article.php?section=ICNews.... Thanks for the pointer. Like I posted, Atmel includes a "Hi-Fi" quality stereo DAC in some of the AVR32 devices, so clearly there is some impetus to combine high quality audio with an MCU. I just need the ADC in addition. The fact that they make a part that combines two switching PSU with high quality audio converters says it is not too hard a problem that they couldn't combine it with the MCU. In fact, there are products that do just this from TI and ADI, but they are sold into a market where the processing is selected from a laundry list and I can't get anyone to tell me that I could use it for what I want to do. In fact, those devices would be perfect for my needs. I think the primary market is hearing aids. This AT73C246 is a very odd beast indeed. But it has potential. Once it is actually on the market (as in showing up as stock somewhere) I'll take another look at it. Rick
From: Ulf Samuelsson on 4 Jun 2010 14:52
rickman skrev 2010-06-04 02:13: > Ulf, > > Once again, I don't find the Atmel web site easy to quickly get a feel > for the capabilities of the parts so let me ask you. I see on the AVR > Solutions page that a number of the AVR32 devices have a "Hi-Fi stereo > Audio DAC", but I don't see any mention of a corresponding ADC. Is > that missing from the AVR32 parts? If I can find an affordable MCU in > the right package with a audio quality stereo CODEC, that would solve > a problem of mine. Is the AVR32 the solution to this problem? > > Rick Look for the AT32UC3A3xxx or UC3A4xxx if you want to do Audio. The AT32UC2A0/A1xxx might also work -- Best Regards Ulf Samuelsson These are my own personal opinions, which may or may not be shared by my employer Atmel Nordic AB |