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Re: [Xylo-SDR] FPGA board

Leon,
If I leave the RESERVED pin on the FX2 on the Xylo open (normally connected to 0v) then the FX2 can not be detected as a USB device by the PC. I suggest that you put a pad by this bin and a earth nearby just in case we need to jumper it.
Also the Xylo lets you select 12/24/48MHz from the FX2 as a clock input to the Cyclone . It's important that the FX2 clock is available on an FPGA pin since all the USB reads/writes have to be sync to this clock. 

Not had time to check your schematic but will do shortly.

Phil...
----- Original Message ----- From: "Leon Heller" <leon.heller@bulldoghome.com> 
To: "Xylo-SDR Discussion" <xylo-sdr@lists.ae5k.us>
Sent: Monday, January 16, 2006 10:28 PM
Subject: Re: [Xylo-SDR] FPGA board
----- Original Message ----- From: "Phil Harman" <pvharman@arach.net.au> 
To: "Xylo-SDR Discussion" <xylo-sdr@lists.ae5k.us>
Sent: Monday, January 16, 2006 1:57 PM
Subject: Re: [Xylo-SDR] FPGA board



Hi Leon,

Will have more time to check this tomorrow but the Xylo has an I2C from
the
FX2 which we use to set up the A/D etc.


I'll bring them out on the connector.



Also did you find out what the RESERVED pin on the FX2 is used for?
No, I'll just leave it open. I've just noticed I've got some of the FX2 pins 
wrong, I'll corrrect it.

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