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Re: [Xylo-SDR] Lionheart Block diagram v1.3


Yes, I don't think anything should go to waste, if we have enough pins on
the buss after it is fully described. We do need enough intra board lines,
but this is a discussion for another thread.


-----Original Message-----
From: xylo-sdr-bounces@lists.ae5k.us [mailto:xylo-sdr-bounces@lists.ae5k.us]
On Behalf Of Leon Heller
Sent: Friday, January 27, 2006 5:04 AM
To: Xylo-SDR Discussion
Subject: Re: [Xylo-SDR] Lionheart Block diagram v1.3

----- Original Message ----- 
From: <pvharman@arach.net.au>
To: "Xylo-SDR Discussion" <xylo-sdr@lists.ae5k.us>
Sent: Friday, January 27, 2006 5:52 AM
Subject: [Xylo-SDR] Lionheart Block diagram v1.3

> Lionheart V1.3 uploaded at
> http://www.hamsdr.com/dnld.aspx?id=117
> and GIF version at
> http://www.hamsdr.com/dnld.aspx?id=118
> Changes:
> - 1.2v regulator runs of +5v rail
> - JTAG goes into FPGA and out to bus
> - FPGA clock comes from 24MHz x 2 from FX2
> - removed 20 pins for BPF and LPF, will use I2C I/O chip on filter board
> - added MAX232 for RS232 comms port.

I don't thing we need the MAX232.

> Still lots of unanswered questions:
> 1. Do we put USB socket on board or use common PC MB header and 
> plug/socket
> 2. What plugs/sockets for 1pps/DDS clock/Control/RS232?  I suggest SMB for
> 1pps and DDS clock.
> 3. What goes to the DIN connector marked ?????

They could just be left as uncomittted FPGA I/Os.

73, Leon 

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