50+ pages fresh from Antti's brain
Antti
well there is a nice article about 3 different Audio-dsp boards from
Eric Brombaugh as well
MK
"Antti" <antti....@googlemail.com> wrote in message
news:425235a9-b8ac-49fc...@r24g2000yqd.googlegroups.com...
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
Antti
> "Antti" <antti.luk...@googlemail.com> wrote in message
weird, i just downloaded myself, and the file is ok
size on disk 4,36 MB (4 579 328 bytes)
Antti
Frank Buss
> 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, f...@frank-buss.de
http://www.frank-buss.de, http://www.it4-systems.de
Frank Buss
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 ?
Antti
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
Nico Coesel
>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!"
--------------------------------------------------------------
Frank Buss
> 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&keywords=lpc1764
Antti
> 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:
>
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
-jg
>
> 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).
Reminds me of the DS80C4xx from Dallas, which also has 64K RAM, only
that has ROM, (and no Phy) - price of $8/1K on the Dallas part, and
it's not clear what the volume price of the W7100 is.
(ie that $6.40 looks like a promo price ..? )
No ADCs and no SPI port - so the Ethernet pumps nicely into this
device, but where does it go from there ?
[Could make a nice FPGA peripheral ? ;) ]
Seems to need TWO crystals ?, and has interesting ROM/FLASH speed
comparisons. ROM looks 4x faster, so they have simple
maths libraries included in ROM
How well does the W7100 debug tool chain work ?
-jg
Antti
Jim, I do not know yet :(
as I wrote, I had W3100 samples, and never used them.. (they had
silicon errata too much..)
the 2 clock is sure major PITA, but it less hassle then external PHY
hm.. I also have samples of another 8051ETH mcu with PHY and 512KB
flash that cost below 6$
but there is no 49$ devkit for that one, maybe time for me to make
one:)
as of W7100 its all about the "easy", it makes sense to use it, if
there support and reference design
are just superior, if not then no reason to consider the wiznet iMCU
my 2 cents
Antti
Nico Coesel
>On Nov 2, 8:36=A0pm, Frank Buss <f...@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...@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.
Petter Gustad
> 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?
Nico Coesel
>ni...@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.