I have used Spartan 3 and 6 series. Since we're comparing commercial temp grade parts, the XC6SLX25 [1] has about the same number of logic cells and almost four times as much block ram. The Artix FPGAs have more multiplier/DSP cores, though. Unfortunately the Artix FPGA that is competitive spec-wise with the LX25 is not available yet (our Xilinx reps told us next summer, probably), so Spartan 6 is still where it's at for the low end (and by low end, I mean under $50/device in volume).
So, we could buy a significantly more expensive Zynq that has 1/4 the block ram, or we could just use a Spartan 6 and a $5 Cortex-M4 microcontroller if needed. Since our applications are block ram intensive, we went with the Spartan 6. [1] http://www.digikey.com/product-detail/en/XC6SLX25-2FTG256C/122-1753-ND/2339839 On Thu, Dec 19, 2013 at 6:11 PM, Greg London <em...@greglondon.com> wrote: > > digikey lists the 7010 going for $55. > http://www.digikey.com/product-search/en?mpart=XC7Z010-1CLG225C&vendor=122 > > What chips/families do you use? > > > > > I do, but haven't tried the Zynq. They have not been price competitive > > when > > compared to a discrete FPGA and microprocessor combination. > > On Dec 19, 2013 5:48 PM, "Greg London" <em...@greglondon.com> wrote: > > > >> > >> Maybe I could start with a poll: > >> > >> How many people on the list use FPGA's for design? > >> > >> > >> > >> > Nice. > >> > > >> > I don't know why the price is so different compared to the zedboard. > >> > All I can guess is that avnet seems to make prototype boards > >> > for corporate engineering companies, and they figured those buyers > >> > could afford a markup. I think thye spent quite a long time to get > >> > the board to work, plus dealing with the ZYNQ chip being a long time > >> > in coming. It will be interesting to see how parallella's first > >> > batch of consumer boards hold up in the field. January maybe? > >> > > >> > Has anyone worked with the zynq chip? > >> > I've fiddled with it using the xilinx pre-built AXI slaves. > >> > I have some home-grown axi slaves and I haven't > >> > found a good explanation of how to hook it up > >> > to the rest of the design. > >> > > >> > Greg > >> > > >> >> I am always amazed when I see what kid of FPGA you can get from a > >> >> Kickstarter > >> >> project. Parallella has a Xilinx Zyng-7000 on it and Parallella only > >> >> costs > >> >> $99 > >> >> (as compared to the $349 deep academic discount of a Zedboard). > >> >> > >> >> Now there is Logi-Bone... a Spartan 6 shield for $69? How in the name > >> of > >> >> Sam > >> >> Hill are they doing that? Volume? I doubt it... > >> >> > >> >> > >> > http://www.kickstarter.com/projects/1575992013/logi-fpga-development-board-for-raspberry-pi-beagl > >> >> _______________________________________________ > >> >> Hardwarehacking mailing list > >> >> Hardwarehacking@blu.org > >> >> http://lists.blu.org/mailman/listinfo/hardwarehacking > >> >> > >> > > >> > > >> > -- > >> > > >> > > >> > _______________________________________________ > >> > Hardwarehacking mailing list > >> > Hardwarehacking@blu.org > >> > http://lists.blu.org/mailman/listinfo/hardwarehacking > >> > > >> > >> > >> -- > >> > >> > >> _______________________________________________ > >> Hardwarehacking mailing list > >> Hardwarehacking@blu.org > >> http://lists.blu.org/mailman/listinfo/hardwarehacking > >> > > > > > -- > > >
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