Reply by Ulf Samuelsson●November 15, 20052005-11-15
"Okay Alex" <nospam@forme.com> skrev i meddelandet
news:URqcf.6225$2y.2644@newsread2.news.atl.earthlink.net...
> Hello everyone,
>
> I'm looking for an SBC with on-board 100Mbps Ethernet, a stereo 16-bit,
> 48-kHz audio codec, and a DSP for MP3 encoding/decoding. Available
> software libraries for a TCP/IP stack and MP3 codec would be a bonus. I'm
> currently only in the research stage, so I'm not tied to any particular
> processor. As far as DSP speed is concerned, I'm not quite sure. The
> device will need to be capable of encoding a stereo audio feed and
> streaming it to a remote computer in real-time. Does anyone know of any
> companies that manufacture such a board? I've tried searching on Google,
> but I've found it difficult to get results based on my specifications.
> Are there any other sites I could use to find a board with these
> specifications?
>
> Thanks,
> Alex
Not sure about the Encoding performance of an ARM7, but otherwise
the AT91SAM7X256 could be a good choice.
There are ARM versions of MP3 from Spirit, and plenty of TCP/IP stacks.
You need to run an I2S codec, not AC97.
Next step up in the Atmel ARM family, would be an AT91RM9200.
--
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may bot be shared by my employer Atmel Nordic AB
Reply by larwe●November 12, 20052005-11-12
bsder wrote:
> Is there any SBC under 100 USD? I just need 1 or 2 functions, eg.
> firewall, dhcpd and routing.
And audio I/O and enough processing power to handle the MP3 encoding.
No, you are not going to meet this price target with a COTS board.
Reply by bsder●November 12, 20052005-11-12
Alex Gibson wrote:
> "Sonic" <spam@spam.com> wrote in message
> news:wx0df.3068$rP3.568@fe3.news.blueyonder.co.uk...
>
>>I think there is some really cool stuff going on with the Blackfin.
>>
>>There is a low cost board called the stamp and it can be used with all the
>>free stuff (compile, debug, uClinux) until your application needs
>>something more (or less, depending on how you look at it).
>>
>>ADSP-BF533 STAMP - http://www.camsig.co.uk/datasheets/DSPStamp.pdf the
>>board is about 1 inch square with all th epinouts you need.
>>
>>"Okay Alex" <nospam@forme.com> wrote in message
>>news:5TKcf.7454$AS6.2323@newsread3.news.atl.earthlink.net...
>>
>>>larwe wrote:
>>>
>>>>Depends on your form factor. If you are just playing around at this
>>>>stage of the game, I'd suggest using whatever spare PC you have lying
>>>>about. Otherwise look at one of the Eden-based SBCs like EBC-3610 from
>>>>www.bcmcom.com or the equivalent product (the part# eludes me) from
>>>>Advantech.
>>>
>>>I'm not really playing around at this point, I'm just doing the initial
>>>research for a commercial product we plan on creating. I'm trying to
>>>find out what's available for our application, so I can determine the
>>>cheapest/easiest/quickest solution(s). It seems like the Eden-based SBCs
>>>from BCM would be overkill. I'm looking for a fairly minimalist baord
>>>containing as few "extras" as possible. By that, I mean that I don't
>>>need a ton of memory, USB, wireless, firewire, IDE, Compact Flash, or any
>>>of those features. I really just need a microcontroller with enough
>>>power for real-time MP3 encoding and a TCP/IP stack, an AC97 codec,
>>>ethernet, and a UART. Although I was initially considering using
>>>ucLinux, I'm starting to think that an OS might not even be necessary and
>>>may needlessly increase my hardware requirements. Any thoughts or
>>>suggestions?
>>>
>>>Alex
>>
>
> Or the opensource hardware blackfin stamp
> 500MHz BF533 + 128MB ram + ethernet
> http://blackfin.uclinux.org/
> http://docs.blackfin.uclinux.org/doku.php?id=buy_stuff
> http://www.analog.com/en/prod/0%2C2877%2CBF533%25252DSTAMP%2C00.html BF533
> http://www.analog.com/en/prod/0%2C2877%2CBF537%25252DSTAMP%2C00.html BF537
> Very good for the BF533 US$170 from digikey.com
> audio module is a bit pricey at US120
> but the whole thing works well (got one sitting on the desk here)
>
> Try one online (doesn't have audio hooked up)
> http://www.techonline.com/community/prod_eval/devel_systems/37200
>
> Alex
>
>
Is there any SBC under 100 USD? I just need 1 or 2 functions, eg.
firewall, dhcpd and routing.
Sam
Reply by Alex Gibson●November 12, 20052005-11-12
"Sonic" <spam@spam.com> wrote in message
news:wx0df.3068$rP3.568@fe3.news.blueyonder.co.uk...
>I think there is some really cool stuff going on with the Blackfin.
>
> There is a low cost board called the stamp and it can be used with all the
> free stuff (compile, debug, uClinux) until your application needs
> something more (or less, depending on how you look at it).
>
> ADSP-BF533 STAMP - http://www.camsig.co.uk/datasheets/DSPStamp.pdf the
> board is about 1 inch square with all th epinouts you need.
>
> "Okay Alex" <nospam@forme.com> wrote in message
> news:5TKcf.7454$AS6.2323@newsread3.news.atl.earthlink.net...
>> larwe wrote:
>>> Depends on your form factor. If you are just playing around at this
>>> stage of the game, I'd suggest using whatever spare PC you have lying
>>> about. Otherwise look at one of the Eden-based SBCs like EBC-3610 from
>>> www.bcmcom.com or the equivalent product (the part# eludes me) from
>>> Advantech.
>>
>> I'm not really playing around at this point, I'm just doing the initial
>> research for a commercial product we plan on creating. I'm trying to
>> find out what's available for our application, so I can determine the
>> cheapest/easiest/quickest solution(s). It seems like the Eden-based SBCs
>> from BCM would be overkill. I'm looking for a fairly minimalist baord
>> containing as few "extras" as possible. By that, I mean that I don't
>> need a ton of memory, USB, wireless, firewire, IDE, Compact Flash, or any
>> of those features. I really just need a microcontroller with enough
>> power for real-time MP3 encoding and a TCP/IP stack, an AC97 codec,
>> ethernet, and a UART. Although I was initially considering using
>> ucLinux, I'm starting to think that an OS might not even be necessary and
>> may needlessly increase my hardware requirements. Any thoughts or
>> suggestions?
>>
>> Alex
>
I think there is some really cool stuff going on with the Blackfin.
There is a low cost board called the stamp and it can be used with all the
free stuff (compile, debug, uClinux) until your application needs something
more (or less, depending on how you look at it).
ADSP-BF533 STAMP - http://www.camsig.co.uk/datasheets/DSPStamp.pdf the board
is about 1 inch square with all th epinouts you need.
"Okay Alex" <nospam@forme.com> wrote in message
news:5TKcf.7454$AS6.2323@newsread3.news.atl.earthlink.net...
> larwe wrote:
>> Depends on your form factor. If you are just playing around at this
>> stage of the game, I'd suggest using whatever spare PC you have lying
>> about. Otherwise look at one of the Eden-based SBCs like EBC-3610 from
>> www.bcmcom.com or the equivalent product (the part# eludes me) from
>> Advantech.
>
> I'm not really playing around at this point, I'm just doing the initial
> research for a commercial product we plan on creating. I'm trying to find
> out what's available for our application, so I can determine the
> cheapest/easiest/quickest solution(s). It seems like the Eden-based SBCs
> from BCM would be overkill. I'm looking for a fairly minimalist baord
> containing as few "extras" as possible. By that, I mean that I don't need
> a ton of memory, USB, wireless, firewire, IDE, Compact Flash, or any of
> those features. I really just need a microcontroller with enough power
> for real-time MP3 encoding and a TCP/IP stack, an AC97 codec, ethernet,
> and a UART. Although I was initially considering using ucLinux, I'm
> starting to think that an OS might not even be necessary and may
> needlessly increase my hardware requirements. Any thoughts or
> suggestions?
>
> Alex
Reply by larwe●November 10, 20052005-11-10
Okay Alex wrote:
> I'm not really playing around at this point, I'm just doing the initial research for a
> commercial product we plan on creating. I'm trying to find out what's available for our
> application, so I can determine the cheapest/easiest/quickest solution(s). It seems
> like the Eden-based SBCs from BCM would be overkill. I'm looking for a fairly
> minimalist baord containing as few "extras" as possible. By that, I mean that I don't
> need a ton of memory, USB, wireless, firewire, IDE, Compact Flash, or any of those
The problem is that if you buy an off-the-shelf board with enough CPU
horsepower to do your bulk task, these extras are going to come along
for the ride, because most users of such boards require them. If you
want something that has _exactly_ what you need and no more, you'll
need to custom-build it. This is why I asked if you are playing about.
As a prototype for a commercial product, you can prove the design
concept and perhaps much of the software on an overkill SBC. You can
then develop your real hardware platform, or contract the development
out.
> initially considering using ucLinux, I'm starting to think that an OS might not even be
> necessary and may needlessly increase my hardware requirements. Any thoughts or
> suggestions?
You really don't want to be reinventing wheels like a TCP/IP stack. De
facto or de jure, you're going to be running an OS on this device.
Reply by Okay Alex●November 10, 20052005-11-10
larwe wrote:
> Depends on your form factor. If you are just playing around at this
> stage of the game, I'd suggest using whatever spare PC you have lying
> about. Otherwise look at one of the Eden-based SBCs like EBC-3610 from
> www.bcmcom.com or the equivalent product (the part# eludes me) from
> Advantech.
I'm not really playing around at this point, I'm just doing the initial research for a
commercial product we plan on creating. I'm trying to find out what's available for our
application, so I can determine the cheapest/easiest/quickest solution(s). It seems
like the Eden-based SBCs from BCM would be overkill. I'm looking for a fairly
minimalist baord containing as few "extras" as possible. By that, I mean that I don't
need a ton of memory, USB, wireless, firewire, IDE, Compact Flash, or any of those
features. I really just need a microcontroller with enough power for real-time MP3
encoding and a TCP/IP stack, an AC97 codec, ethernet, and a UART. Although I was
initially considering using ucLinux, I'm starting to think that an OS might not even be
necessary and may needlessly increase my hardware requirements. Any thoughts or
suggestions?
Alex
Reply by larwe●November 10, 20052005-11-10
bsder wrote:
> Any of these boards cost under 100 USD? If not I rather get one from
> Soekie.com
What will you get from them for $100 that has the necessary peripherals
and the required CPU horsepower to encode MP3 audio in realtime?
Reply by bsder●November 10, 20052005-11-10
larwe wrote:
>
>>>Why does it have to be a DSP? If you just want to encode an MP3 stream
>>>onto Ethernet, you can use a general-purpose SBC.
>>
>>Thanks for the suggestion. Any recommendations on a general-purpose SBC?
>
>
> Depends on your form factor. If you are just playing around at this
> stage of the game, I'd suggest using whatever spare PC you have lying
> about. Otherwise look at one of the Eden-based SBCs like EBC-3610 from
> www.bcmcom.com or the equivalent product (the part# eludes me) from
> Advantech.
>
Any of these boards cost under 100 USD? If not I rather get one from
Soekie.com
Sam.
Reply by larwe●November 9, 20052005-11-09
> > Why does it have to be a DSP? If you just want to encode an MP3 stream
> > onto Ethernet, you can use a general-purpose SBC.
>
> Thanks for the suggestion. Any recommendations on a general-purpose SBC?
Depends on your form factor. If you are just playing around at this
stage of the game, I'd suggest using whatever spare PC you have lying
about. Otherwise look at one of the Eden-based SBCs like EBC-3610 from
www.bcmcom.com or the equivalent product (the part# eludes me) from
Advantech.