Re: [Xylo-SDR] Lionheart Block diagram v1.2

["Leon Heller" <leon.heller@bulldoghome.com>]

----- Original Message ----- 
From: <pvharman@arach.net.au>
To: "Xylo-SDR Discussion" <xylo-sdr@lists.ae5k.us>
Sent: Friday, January 27, 2006 3:24 AM
Subject: Re: [Xylo-SDR] Lionheart Block diagram v1.2


> I think there is a logistical problem with feeding the FX2 clock from the
> 48MHz clock/2 from the FPGA. Until the FPGA is programmed we don't get the
> 24MHz clock for the FX2 and we can't program the FPGA via the USB until 
> the
> USB is running.  Whilst we could use the JTAG I suspect that most users 
> will
> want to use the USB to program. Seems we need to do like the Xylo - use a
> 24MHz crystal on the FX2 and feed 48MHz from the FX2 to the FPGA.

Yes, that is a problem. Might as well do that.

Leon