[hpsdr] SHARC samples

[Leon Heller]

My SHARC samples have just materialised. They took several weeks, probably 
because it's a new device - ADSP-21262 - and it's lead-free. I'll have to 
get the GNU tools made available by ADI working before I can really use 
them, although I could hand-assemble some simple test programs like I used 
to do in the good old days when development tools were very expensive and 
there weren't any alternatives. I can get 60 days out of the the Visual DSP 
evaluation toolset, anyway.

Data sheet is here:
<
http://www.analog.com/UploadedFiles/Data_Sheets/462724356ADSP_21262_b.pdf
>

The ADSP-21262 is the first of a new range of low-cost third-generation DSPs 
intended for low-cost audio use, and has two 32-bit ALUs (integer and FP) 
using a SIMD architecture. There is 2 Mbit on-chip RAM and 4 Mbit ROM. I'll 
ask one of my contacts at ADI UK if they've put anything in the ROM of the 
chips I've got.

BTW, these are in 144 lead LQFP. BGA is available for those who like that 
sort of thing. Lead pitch is 0.5 mm, which I can manage quite well at home. 
I've come up with a simple technique for prototyping with this type of 
device, using a double-sided PCB with a continuous ground plane on the top.

73, Leon
--
Leon Heller, G1HSM
leon.heller at bulldoghome.com
http://www.geocities.com/leon_heller