[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xylo-SDR] Xylo




----- Original Message ----- From: "John Kolb" <jlkolb@jlkolb.cts.com>
To: "Xylo-SDR Discussion" <xylo-sdr@lists.ae5k.us>
Sent: Wednesday, December 14, 2005 4:07 AM
Subject: Re: [Xylo-SDR] Xylo


At 10:06 AM 12/13/2005, you wrote:
A USB2 port to talk to the PC, a I2C port to talk to the A/D and D/A
chips, and a bunch of I/O pins, what else do we need?

I was thinking today about a FPGA PCB design, and thinking that
if the header pins come out the bottom, as on the Sylo, rather than
the top, they could either be stuffed with straight pins to plug into a
carrier PCB, or stuffed with right angle IDC connectors to allow cables
to plug into the board while on the carrier.  Only thing I would have
done differently would be to have used 20 pin headers instead of 14,
to allow an HP 165x series logic analyer pod to plug in for debugging.
Of course the flying leads can be used with any size connector.

Has Altera published the design of the parallel port programming
cable so that we could build our own? Or is there a cheap way
to buy one?

It's quite easy to build one's own from Altera's schematic, I have details on my web site. I've designed an improved version using SM. A PCB isn't essential

I'm not sure if mine is suitable for the Cyclone devices, though. It should work if VccIO is 3.3V, which it will be on my proposed Cyclone II board. Altera hasn't published details of the current ByteBlaster.

Leon
--
Leon Heller, G1HSM
leon.heller@bulldoghome.com
http://www.geocities.com/leon_heller
---
[This E-mail has been scanned for viruses but it is your responsibility to maintain up to date anti virus software on the device that you are
currently using to read this email. ]