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Message

Re: 2214 "simple" board design suggestions

2004-02-28 by redsp@yahoo.com

--- In lpc2000@yahoogroups.com, "skykotech" <rick@s...> wrote:
> I have about 4 or 5 projects that the LPC2214 would be about a 
> perfect fit.  I have 3 sample 2214 parts, but hopefully can get a
few 
> more down the road.  I was wondering if some on this list might 
> appreciate a cheap, somewhat simple 2214 board, made available at 
> cost + shipping, and with the schematics and gerbers posted in the 
> files section.  I have the time and desire, and I have routed many
2 
> and 4 layer boards including a very dense PCI card.

I expect there will be plenty of eval boards around shortly.  I
believe I have heard of some 3 or 4 companies that are designing them.
 I don't know that they are all 2214s.  

How did you get the samples?  My local rep has told me to forget it
until Q4 or so.  Did you get any insight into when the parts would be
in production?  I am currently designing in an OKI 67Q5003, but would
like to consider this part if it is real.  The package is also an
issue.  The TQFP144 is way too large.  So far Philips has not put any
of these chips into a QFN or BGA yet even though they are supposed to
have a QFN64 out shortly if I have my facts straight.  I was told it
is delayed due to "mechanical" issues.  Does that mean the chip is too
large for the package?  



> Anyway, if so, what would you want on the board?  Just the
processor, 
> regulators (simple linear?) for the 1.8V core and 3.3V IO, and a 
> crystal, with all other signals brought to .1 inch headers, or 
> something a bit more exotic, but maybe more usefull?
> 
> I am ok with making the board either 2 layers or 4 layers, but if
it 
> is 4 layers, it really screams for doing *something* with the 
> external address/data bus.  I want to try my hand at a compact
flash 
> interface, but I could possibly attach that on a daughterboard at a 
> later date if that is viewed as an unwanted peripherial.

I can give you info on how the OKI ARM board is done, including info
on an Ethernet interface.  Contact me by email. 

I would suggest that you provide space on the board for the three
types of memory, SRAM, SDRAM and Flash.  Then the Linux people can do
their thing with it.  

I would love to see an EP1K50 mapped to the bus.  That is what our DSP
board will have to provide various IO.  I wouldn't mind using your
board as a prototype, but my guess is that ours will be ready to test
before yours.  :(

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