Products > Test Equipment
A High-Performance Open Source Oscilloscope: development log & future ideas
<< < (19/71) > >>
asmi:

--- Quote from: tom66 on November 19, 2020, 12:34:38 pm ---I'll give the Cyclone 10 devices a look.

--- End quote ---
Don't bother. It's garbage.
tom66:
Sigh.  At least I can build for Zynq using Vivado WebPACK.
nctnico:

--- Quote from: asmi on November 19, 2020, 02:32:56 pm ---
--- Quote from: tom66 on November 19, 2020, 12:34:38 pm ---I'll give the Cyclone 10 devices a look.

--- End quote ---
Don't bother. It's garbage.

--- End quote ---
I'll take you word for it but still I wonder if you can elaborate a bit more about why these devices are a bad choice.
asmi:

--- Quote from: nctnico on November 19, 2020, 02:38:22 pm ---I'll take you word for it but still I wonder if you can elaborate a bit more about why these devices are a bad choice.

--- End quote ---
LP subfamily, which can be used with free version of their tools, doesn't even have memory controllers  :palm:
GX subfamily is behind a heavy paywall (4k$ a year).
You are better off using Kintex-7 devices from Xilinx, lower end ones (70T and 160T) can be used with free tools, license for 325T can be purchased with a devboard and subsequently used for your own designs (Xilinx device-locked license allows using that part in any package and speed grade, not necessarily the one that's on a devboad, and it's a permanent license, not subscription), the cheapest Kintex-7 devboard that I know of that ships with a license is Digilent's Genesys 2 board for $1k, and you can find 325T devices in China for 200-300$ a pop, as opposed to Digikey prices of 1-1.5k$ a pop. Or you can talk to Xilinx directly, and they typically provide deep discounts - it won't be as cheap as you can get them in China, but it will be a fully legit devices and you can be sure you can always buy them at that price, while sources in China tend to be ad-hoc - they appear on a market, they sell their stock, and they disappear forever. These devices provide up to 64/72bit 933MHz DDR3 interface (~14.6 GBytes/s of bandwidth), up to 16 transceivers which can go as high as 12.5 Gbps (depending on package and speed grade), and all of that in convenient 1 mm pitch BGA packages with 400 or 500 user IO balls so you can connect a lot of stuff to it.
But most importantly, Kintex-7 fabric is significantly faster than even Artix-7/Spartan-7 one, which is faster than anything Intel offers in Cyclone family.
nctnico:

--- Quote from: asmi on November 19, 2020, 02:54:39 pm ---
--- Quote from: nctnico on November 19, 2020, 02:38:22 pm ---I'll take you word for it but still I wonder if you can elaborate a bit more about why these devices are a bad choice.

--- End quote ---
LP subfamily, which can be used with free version of their tools, doesn't even have memory controllers  :palm:
GX subfamily is behind a heavy paywall (4k$ a year).
You are better off using Kintex-7 devices from Xilinx, lower end ones (70T and 160T) can be used with free tools, license for 325T can be purchased with a devboard and subsequently used for your own designs (Xilinx device-locked license allows using that part in any package and speed grade, non necessarily the one that's on a devboad, and it's a permanent license, not subscription), the cheapest Kintex-7 devboard that I know of that ships with a license is Digilent's Genesys 2 board for $1k, and you can find 325T devices in China for 200-300$ a pop, as opposed to Digikey prices of 1-1.5k$ a pop. Or you can talk to Xilinx directly, and they typically provide deep discounts - it won't be as cheap as you can get them in China, but it will be a fully legit devices and you can be sure you can always buy them at that price, while sources in China tend to be ad-hoc - they appear on a market, they sell their stock, and they disappear forever. These devices provide up to 64/72bit 933MHz DDR3 interface (~14.6 GBytes/s of bandwidth), up to 16 transceivers which can go as high as 12.5 Gbps (depending on package and speed grade), and all of that in convenient 1 mm pitch BGA packages with 400 or 500 user IO balls so you can connect a lot of stuff to it.

--- End quote ---

For a moment assume the $4k for the Cyclone 10 license drops to 0. Are there any technical problems with the Cyclone 10 FPGAs? The Kintex device you are proposing is about 3 times more expensive (up to 10 times when comparing Digikey prices). Even with the $4k subscription it doesn't take selling a lot of boards to break even.
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod