Re: [Xylo-SDR] RFC - Motherboard

["Eric Ellison" <ecellison@comcast.net>]

Chris

That's ok, so have I! I just know that no one has spent any money till we
get it all sorted out and firmed up. We don't have a name for the
motherboard connection but Sherwood has been suggested.

Let me give it a shot, since in the next few days it will get a bit more
focus. Phil_H has been trying all evening to post his concept drawing.

The Janus is basically SDR-1000 glue ideas. Things that have been mentioned
and some things which Phil - VK6APH and Bill - KD5TFD have proven in concept
are:

High quality A/D chip and streaming wideband digitized I/Q audio to
PowerSDR.
High quality D/A and A/D to microphone input, speaker/earphone output, side
tone etc.
High speed Iambic Keying to PowerSDR.
Control of the relays in SDR.
GPS clock reference to the SDR.
(More coming I think)

The Lionheart is the FPGA/USB Cyclone-FX2xx pulse of the system. Named for
and by Leon - G1HSM who is designing. It is still being defined, and will
forever be used to define programmable hardware in this project. Stand alone
or bus mounted utility.

So far it has Cyclone II (var) chip. (A logic hardware 'etch-a-sketch')
Programmable via USB to a memory chip.
FX2 USB connector.
A reset switch.
A couple of indicator LEDs 
I2C connector? (I hope)
Ethernet connector (I hope)

Phil_C is doing a high speed A/D front end radio which he has the honors of
naming (hopefully soon). Concept description is in the last couple of
messages.

News yesterday at 11!

Eric









-----Original Message-----
From: xylo-sdr-bounces@lists.ae5k.us [mailto:xylo-sdr-bounces@lists.ae5k.us]
On Behalf Of Christopher T. Day
Sent: Tuesday, January 24, 2006 11:55 PM
To: Xylo-SDR Discussion
Subject: Re: [Xylo-SDR] RFC - Motherboard

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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