[hpsdr] Call for Comments and Discussion - OzyII

[Murray Lang]

AU$0.02:

I'd like to see the cost of OZY kept as low as reasonable so that 
multiple HPSDR setups are justifiable (eg one for Penny/Mercury another 
for Janus+SoftRocks etc).

I hope that "feature creep" doesn't plague this project. Once you start 
talking about TCP/IP then all sorts of things logically follow. But can 
the FPGA be more than a half way house in this regard?

If we are going to go down the path that some are suggesting and design 
a Linux board with all the requisite resources, then why not add a DSP 
and call it Sasquatch? I think it would be a shame to invest all that 
energy (and money) and not go the extra step.

Cheers,
Murray VK6HL

Phil Harman wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> 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
>
>
>
>
>
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