[hpsdr] Mercury

[John B. Stephensen]

The RAM is a problem. I need lots of it for filters, the FFT and traceback
memory. The extra RAM in the smaller Xilinx parts is a big help for DSP.

The largest Xilinx part available in a non-BGA package now appears to be the
XC3S500E and is $26 (1-24 pieces) at Nu Horizons. This provides more than
twice the memory of the Altera, part plus a few more multipliers and logic
elements.

73,

John
KD6OZH

----- Original Message ----- 
From: "Lyle Johnson" <kk7p at wavecable.com>
To: "John B. Stephensen" <kd6ozh at comcast.net>
Cc: "Philip Covington" <p.covington at gmail.com>; <hpsdr at hpsdr.org>
Sent: Sunday, June 11, 2006 03:24 UTC
Subject: Re: [hpsdr] Mercury


> > It would be nice to have at least as many resources as a Xilinx XC3S400
(16
> > 18k dual-port RAMs, 16 18x18 multipliers and 7200 logic elements).
>
> The Altera EP2C8 is the largest Cyclone II device I can find in a
> non-BGA package.  It has 165,888 bits of SRAM (36 blocks of 4K bits), 18
> 18x18 multipliers and 8256 logic elements.  $24 in singles from the
> Altera online store.
>
> 73,
>
> Lyle KK7P
>


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