:[EMAIL PROTECTED] On Behalf Of richard allen
Sent: Thursday, December 01, 2005 8:56 PM
To: Philip Covington
Cc: [EMAIL PROTECTED]; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Xylo Update
Would someone please send me a link to a technical reference for the xylo
board?
Thanks,
Richard W5SXD
This seems to be the main site for the Xylo
http://www.fpga4fun.com/board_Xylo.html. I'm looking for other info and
related hardware, but am just getting started myself and about the same
shape as you.
There is enough information there to tell you the main parts on the
board. You then should
The FPGA equivalent is to do a syntax check and correct any errors
there, then run a simulation of the input (if using VHDL or Verilog) to
ensure the logic design seems to be OK.
You then compile it, and then run the simulation on the output of the
compiler, because it will sometimes
Lyle
You forgot to mention the FUN??? of adding, instantiating and debugging packages
from third party sources too lazy to document - hi!
Phil, K3IB
- Original Message -
There is enough information there to tell you the main parts on the
board. You then should go to the
: Re: [Flexradio] Xylo Update
This seems to be the main site for the Xylo
http://www.fpga4fun.com/board_Xylo.html. I'm looking for other info
and related hardware, but am just getting started myself and about the
same shape as you.
There is enough information there to tell you the main parts
Looks like a lot of work, but what fun.
Definitely fun!
Lyle
Hi Bob ( others),Once you get into it, you'll probably find that FPGA programming is not that difficult, and, given the power of the tools, can be much less frustrating than straight digital design. I was dragged into the Verilog world a few years ago for work, and have been using the
, December 02, 2005 2:04
PMTo:
flexradio@flex-radio.bizSubject: Re: [Flexradio] Xylo
Update
Hi Bob (
others),
Once you get into it, you'll probably find that FPGA
programming is not that difficult, and, given the power of the tools, can be
much less frustrating than straight digital design
:[EMAIL PROTECTED]
Sent: Friday, December 02, 2005
4:36 PM
To: ecellison; Jeff Anderson;
flexradio@flex-radio.biz
Subject: RE: [Flexradio] Xylo
Update
Ah. One of the things gone with the Forums
is the TeamSpeak link. Remind me when the get-together is tonight?
Chris
AE6VK
From
Don't forget an excellent FPGA article by
John KD6OZH in the Oct/Nov 2004 QEX issue
where he describes the details of his SDR
RX/TX platform.
de Ken N9VV
Fellow Xyloeans,
Last night I managed to get audio from the Wolfson A/D, via the FPGA and FX2
over the USB2 at 480Mbps to the PC and out over PortAudio to the speakers.
For some reason PortAudio would hang after a few seconds but it was late at
night and not the time to start debugging.
Hi Phil,
Good deal, sounds great! I am curious what sampling rate you were
running the Wolfson chip at and whether your were doing both channels
or just one for now? Also, what did you decide on for synchronization
of the audio frames between left and right channels?
73 de Phil N8VB
On
Would someone please send me a link to a technical reference for the
xylo board?
Thanks,
Richard W5SXD
Philip Covington [EMAIL PROTECTED] wrote:
(12/01/2005 20:38)
Hi Phil,
Good deal, sounds great! I am curious what sampling rate you were
running the Wolfson chip at and whether your were
Hi Phil,
I used 48kbps and 16 bit samples to keep things simple for the first test. I
also just used the left audio channel and the blocking version of the
PortAudio code - again a simple first test.
I was looking at using one of the 2^n A/D states as a flag to indicate the
next data word
Phil,
Are you saying that you will modify any zero sample by one count to
guarantee uniqueness of the sync? Also, it would seem that you would
not want to reduce bandwidth by 1/3 to sync every stereo sample. I
sync only once every 500 channels in a larger system in the same
manner with no
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