[hpsdr] New Mercury block diagram

[Lyle Johnson]

Hello Chuck!
> I have a request to make for the block diagrams. It really doesn't help me 
> too much to just see a block labelled "FPGA". Could we make the diagram more 
> of a functional diagram? I'd love to see labels like "programmable 
> decimation (x to y)", CIC filter width, compensation filter, etc...

Good point.

It is for this very reason that the projects are gradually adding a 
second block diagram. The first one is functional from a physical 
perspective.  It's hardware, you can't change it easily. So, "FPGA" is 
descriptive and accurate.

The second block diagram is the Verilog code which is *implemented* in 
the FPGA.  This is subject to change - a lot! - so has its own drawing.

See the Janus, Ozy and Penelope pages in the wiki for examples of this.

73,

Lyle KK7P

PS - If you're eyes are getting as old as mine, if you tilt your head a 
little slightly defocus, the diagrams merge... LJ


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