[hpsdr] Call for Comments and Discussion - OzyII

[Paul Cecil]

Phil,
I am sure others will have suggestions and additions. I was wondering 
about expanding, or make it expandable, the amount of RAM available to 
the FPGA. If down the line you were to add a "soft core processor" then 
future possibilities that you are not planning for could be explored. I 
am sure there are others who could think of the possibilities of having 
a processor in the hpsdr.

Paul
KA5FPT

------------------------------
> Message: 2
> Date: Sat, 18 Jul 2009 16:50:07 +0800
> From: "Phil Harman" <phil at pharman.org>
> Subject: [hpsdr] Call for Comments and Discussion - OzyII
> To: <hpsdr at openhpsdr.org>
> Message-ID: <5D58BB9CBCCE41C3A3BDEE50DF1C5323 at phil>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
>
> All,
>
> I've posted a preliminary block diagram of what  OzyII could look like on 
> the Wiki -
>
> < http://openhpsdr.org/wiki/index.php?title=OZYII >
>
> It's basically a large, leaded, FPGA connected to a 10/100/1000 Ethernet PHY 
> chip.  The LVDS transceivers will provide high speed data access to Mercury 
> and other future projects to free us from any Atlas bus limitations.
>
> There are a number of options for the Gigabit PHY, these are shown on the 
> Wiki. Initially I'm trying to avoid those manufacturers that require an NDA 
> before they will release data sheets etc on their chips.  If anyone has 
> experience with such PHYs  I would be grateful to hear from them.
>
> By using a large FPGA if offers the potential to add a soft core 
> microprocessor in the future so that the board can run a full TCP/IP stack, 
> UDP etc. e.g. uIP (see  http://www.sics.se/~adam/uip/index.php/Main_Page ).
> Initially we will use the Gigabit PHY as just a fast connection to the PC 
> and use raw frames to communicate.
>
> Lyle, KK7P, has kindly volunteered to lay out the PCB and we have funding 
> from TAPR to undertake the prototype development.  Thanks to both for their 
> continued support.
>
> Bill, KDTFD, has offered to help with the PC Ethernet code and would 
> appreciate assistance from anyone who has experience with working with 
> Ethernet at a low level on the PC under Windows.
>
> Feedback is requested in relation to features and facilities that folks may 
> require.
>
> 73's Phil...VK6APH
>   

 1247967931.0