[hpsdr] [ATLAS] - proposed physical bus/pcb design 03March2006

[Christopher T. Day]

[Well, that message didn't work very well. Try again.]

Phil,

My attached message gives the Mouser part number I found for the 24-pin
version. I found it by looking for a match to what is specified for the
plug in the ATX V2.2 Motherboard spec 
<http://www.formfactors.org/developer/specs/atx2_2.pdf>. Here is the
data sheet for the header on the Mouser site:
<http://www.molex.com/pdm_docs/sd/039281243_sd.pdf>. Is this enough
info?

Unfortunately, I think this header is not pin compatible with the 20-pin
version; the latch is in the wrong place and the pin across from #8 is
NC instead of -5VDC as specified for the 20-pin connector in the ATX
v2.1 spec 
<http://www.formfactors.org/developer/specs/atx2_1.pdf>. I now have the
picoPSU supply which is not modifiable to 24-pins, so I'd be happy with
the Atlas board as is.


	Chris

-----Original Message-----
From: Philip Covington [mailto:p.covington at gmail.com] 
Sent: Saturday, March 04, 2006 3:22 PM
To: High Performance Software Defined Radio Discussion List
Subject: Re: [hpsdr] [ATLAS] - proposed physical bus/pcb design
03March2006

***** High Performance Software Defined Radio Discussion List *****

Hi Eric,

I could not find a specification or reliable source of information
concerning the pin out of the 24 pin connector mentioned.  Anyone?

73 de Phil C
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The 20-pin header specified in the ATX spec rev 2.1 is in the Mouser
catalog as Part # 538-39-29-9202 @ $2.57.
If I read things correctly, the 24-pin header we want is in the Mouser
catalog as Part # 538-39-28-1243 @ $4.05.

{Note corrected price for the 20-pin version.}


	Chris


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