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

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

----- Original Message ----- 
From: <pvharman@arach.net.au>
To: <vk4str@netspace.net.au>; "Xylo-SDR Discussion" <xylo-sdr@lists.ae5k.us>
Sent: Friday, January 27, 2006 1:41 AM
Subject: Re: [Xylo-SDR] Lionheart Block diagram v1.2


> Hi Helmut,
>
> Adding serial ports to the FPGA is very easy, I already have one on my 
> Xylo to
> help with debugging.
>
> Based on current feedback I will make the following changes to the V1.2
> Lionheart block diagram
>
> 1. 1.2v regulator to run off the 5v rail.
> 2. Use I2C for controlling the LPF's and BPF's. Last night I tested an
> MCP23016 16 bit I/O expander on my Xylo and it works just fine.
> 3. I think that I understand how the JTAG boundary scan works now so I 
> will
> change the diagram to show the connector going into the FPGA and from the 
> FPGA
> out over the bus.
>
> In regards to the question below, what version of the FX2 are we planning 
> i.e.
> how many pins?

I was intending to use the 56 pin version.

Leon