| Computers Forum Index » Computer Architecture - FPGA » 50+ pages fresh from Antti's brain... |
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| Antti... |
 Posted: Sun Nov 01, 2009 6:10 am |
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| Antti... |
| Posted: Mon Nov 02, 2009 10:59 am |
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On Nov 2, 12:12 pm, "MK" <m... at (no spam) nospam.please> wrote:
Quote: "Antti" <antti.luk... at (no spam) googlemail.com> wrote in message
news:425235a9-b8ac-49fc-8123-be04446d12ca at (no spam) r24g2000yqd.googlegroups.com...
just released!
well there is a nice article about 3 different Audio-dsp boards from
Eric Brombaugh as well
Antti
http://groups.google.com/group/antti-brain/files?hl=en
Hello Antti,
Tried to look at it but Acrobat says the file is damaged and can't be
repaired. I downloaded it a few times.
Michael Kellett
weird, i just downloaded myself, and the file is ok
size on disk 4,36 MB (4 579 328 bytes)
Antti |
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| Antti... |
| Posted: Mon Nov 02, 2009 1:22 pm |
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On Nov 2, 1:30 pm, Frank Buss <f... at (no spam) frank-buss.de> wrote:
Quote: Antti wrote:
just released!
well there is a nice article about 3 different Audio-dsp boards from
Eric Brombaugh as well
Antti
http://groups.google.com/group/antti-brain/files?hl=en
Not very FPGA related, but I like it, some interesting ideas. Maybe next
time post it to sci.electronics.basics :-)
The magnetic pendulum idea sounds interesting. Do you think it would be
possible to build something similar with only one coil for hovering things
like this:http://www.paramountzone.com/globe.htm?
--
Frank Buss, f... at (no spam) frank-buss.dehttp://www.frank-buss.de,http://www.it4-systems.de
eh, I think I have enough FPGA related in the previous issues, well
the u2tool inside
is an FPGA, but i had no time to explain the inner life in more detail
in october issue
the "hovering" humm, i guess it could be done so that "one coil" just
lifts up some
metal part and balances it, it should be possible to measure and
compensate with
one coil only
rotation would however need more than one coil for sure
Antti |
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| Frank Buss... |
| Posted: Mon Nov 02, 2009 4:12 pm |
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MK wrote:
Quote: Tried to look at it but Acrobat says the file is damaged and can't be
repaired. I downloaded it a few times.
Works for me. Maybe try right click and "save as", then open the PDF, not
within the browser, sometimes Acrobat Reader has problems when loading it
from within a web browser.
BTW: the W7100 microcontroller sounds interesting: 64 kB flash, 64 kB SRAM,
32 IO ports and TCP/IP for $6.40 ( http://tinyurl.com/yev4vzy ).
--
Frank Buss, fb at (no spam) frank-buss.de
http://www.frank-buss.de, http://www.it4-systems.de |
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| Frank Buss... |
| Posted: Mon Nov 02, 2009 4:30 pm |
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| Nico Coesel... |
| Posted: Mon Nov 02, 2009 10:52 pm |
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Frank Buss <fb at (no spam) frank-buss.de> wrote:
Quote: MK wrote:
Tried to look at it but Acrobat says the file is damaged and can't be
repaired. I downloaded it a few times.
Works for me. Maybe try right click and "save as", then open the PDF, not
within the browser, sometimes Acrobat Reader has problems when loading it
from within a web browser.
BTW: the W7100 microcontroller sounds interesting: 64 kB flash, 64 kB SRAM,
32 IO ports and TCP/IP for $6.40 ( http://tinyurl.com/yev4vzy ).
NXP's LPC1700 series (Cortex M3) is probably cheaper and has at least
5 times more performance.
--
Failure does not prove something is impossible, failure simply
indicates you are not using the right tools...
"If it doesn't fit, use a bigger hammer!"
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| Frank Buss... |
| Posted: Mon Nov 02, 2009 11:36 pm |
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| Antti... |
| Posted: Tue Nov 03, 2009 12:13 am |
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On Nov 2, 8:36 pm, Frank Buss <f... at (no spam) frank-buss.de> wrote:
Quote: Nico Coesel wrote:
NXP's LPC1700 series (Cortex M3) is probably cheaper and has at least
5 times more performance.
You are right, the chip is interesting. The smallest one of the LPC1700
family with network support costs about the same as the W7100, but has an
additional DAC, ADC and USB:
http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keyword....
--
Frank Buss, f... at (no spam) frank-buss.dehttp://www.frank-buss.de,http://www.it4-systems.de
yes and no, I have the LPC1768 sample on my desk, yet i consider the
W7100
interesting too. LPC1768 has no ethernet PHY and W7100 has lots of
ethernet
"in hardware" so for tasks where you need ETH+something and do not
need
the extras the W7100 maybe better
Antti |
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| Nico Coesel... |
| Posted: Tue Nov 03, 2009 11:28 pm |
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Antti <antti.lukats at (no spam) googlemail.com> wrote:
Quote: On Nov 2, 8:36=A0pm, Frank Buss <f... at (no spam) frank-buss.de> wrote:
Nico Coesel wrote:
NXP's LPC1700 series (Cortex M3) is probably cheaper and has at least
5 times more performance.
You are right, the chip is interesting. The smallest one of the LPC1700
family with network support costs about the same as the W7100, but has an
additional DAC, ADC and USB:
http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=3D0&keyword..=
.
--
Frank Buss, f... at (no spam) frank-buss.dehttp://www.frank-buss.de,http://www.it4-sys=
tems.de
yes and no, I have the LPC1768 sample on my desk, yet i consider the
W7100
interesting too. LPC1768 has no ethernet PHY and W7100 has lots of
ethernet
"in hardware" so for tasks where you need ETH+something and do not
need
the extras the W7100 maybe better
But what if you want something special? I bet the hardware tcp/ip
stack is very limited. I have been using the LPC2000 series (even the
ones without MAC) within IP networks for several years now and
sometimes you really need some extra flexibility.
Also beware of internal PHYs. The process for a good phy is different
than for a good microcontroller. You'll probably end up with a power
guzzling controller. Last year I evaluated a Freescale controller with
internal phy. It consumed about 1W and required a 4 layer board for
adequate heat sinking.
--
Failure does not prove something is impossible, failure simply
indicates you are not using the right tools...
"If it doesn't fit, use a bigger hammer!"
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| Petter Gustad... |
| Posted: Wed Nov 04, 2009 1:01 am |
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nico at (no spam) puntnl.niks (Nico Coesel) writes:
Quote: guzzling controller. Last year I evaluated a Freescale controller with
internal phy. It consumed about 1W and required a 4 layer board for
adequate heat sinking.
Was that the M52235? I have a couple eval boards that does not seem to
get hot at all. They can also run PoE.
Petter
--
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail? |
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| Nico Coesel... |
| Posted: Wed Nov 04, 2009 11:28 pm |
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Petter Gustad <newsmailcomp6 at (no spam) gustad.com> wrote:
Quote: nico at (no spam) puntnl.niks (Nico Coesel) writes:
guzzling controller. Last year I evaluated a Freescale controller with
internal phy. It consumed about 1W and required a 4 layer board for
adequate heat sinking.
Was that the M52235? I have a couple eval boards that does not seem to
get hot at all. They can also run PoE.
I think so. Perhaps it will consume a lot of power if a long ethernet
cable is connected. The datasheet / application note recommends a 4
layer board for cooling.
--
Failure does not prove something is impossible, failure simply
indicates you are not using the right tools...
"If it doesn't fit, use a bigger hammer!"
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