Re: [Xylo-SDR] RFC - Motherboard

["Christopher T. Day" <CTDay@lbl.gov>]

Sorry, could someone post a brief description of what's on the Janus and
what's on the Lionhart? I've lost track. Thanks.


	Chris - AE6VK
 

-----Original Message-----
From: Philip Covington [mailto:p.covington@gmail.com] 
Sent: Tuesday, January 24, 2006 8:27 PM
To: Xylo-SDR Discussion
Subject: Re: [Xylo-SDR] RFC - Motherboard

On 1/24/06, Eric Ellison <ecellison@comcast.net> wrote:
> Phil
>
> You are right. I ceased to panic after the first flurry on that
matter.
> FPGA's in the capability range we are talking about are not that
expensive.
>
> However, in this exchange which you have explained well right here:
>
> If you used ALL the resources on the Lions 'heart' can you do what you

> are planning below? Your project does NOT have to co-exist with any 
> others, just a different FPGA program and leverage of programs in 
> common with other projects like FX2. Other slots used for the BPF 
> board etc. If so, that WOULD make the daughter card + Buss concept 
> viable. After all the Janus is a totally different project, and will
never need to co-exist with your radio!
> It would also make the Lionheart a little more flexible in that it 
> would allow for a 'squatter'. I realize it depends on physical space, 
> but 'squatting' on cleverly spaced pins could do it. Nothing has all 
> that much height, in any of these projects except front panel stuff.
>
> Just wondering.
>
> Eric

Eric,

Actually the Janus will probably be a part of my project.  I will need a
way to get audio out for RX and audio in for TX - I'll need at least the
TI CODEC part of it.  Also, I can envision having both a LTC2208 board
and a QSD based board in one radio.  The LTC2208 could be used to scan
big chunks of spectrum and direct the QSD based board to tune to a
signal of interest while the LTC2208 continues the scan.  I also need to
be able to decode command signals via USB to an IO controller board -
that function will be handled by the Lionheart board.

Phil C
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