CY7C68013 EPM1270 CPLD USB 2.0 development board - Page 1
Forum section: electronics / general

author: ebclr
author_rank: Super Contributor
timestamp: September 25, 2016, 03:16:37 am
content: My computer crashed, and I lost the schematics and doc's of this development board, Do anybody have this information to share.I need to make a usb FPGA device and this board in my lab stock it's perfect for my need, but without info is a little hard

author: legacy
author_rank: Super Contributor
timestamp: September 25, 2016, 08:10:52 am
content: I might still have the same board around, bought from ebay and never used since I prefer XilinxI say *might* because I am not sure if I still have the documentation with me, I need to checkp.s. on ebay you can find Cypress-USB breakouts (without fpga) for 10 USDI am tempted to buy one of those and to interface it with my Papilio/Pro (Spartan6)

author: andersm
author_rank: Super Contributor
timestamp: September 25, 2016, 10:44:49 am
content: The board is still advertised by several vendors on AliExpress. One also sellsbare boardsand claims to supply the schematic PDF, maybe try contacting them?

author: andersm
author_rank: Super Contributor
timestamp: September 25, 2016, 01:30:09 pm
content: The bare board images show footprints for decoupling caps on the underside.

author: ebclr
author_rank: Super Contributor
timestamp: September 25, 2016, 08:14:30 pm
content: The board have 2 sides a lot of decouple caps on another side, also board does not clock miraculous the clock in on another side also

author: ebclr
author_rank: Super Contributor
timestamp: September 25, 2016, 08:45:38 pm
content: Thank you for your replyI asked for a schematics and doc's, And you help me telling that if i follow all those minuscules traces on the board one by one, and write down to a papper, I can make my own schematic. Huau that's the best advice i have in my live

author: KE5FX
author_rank: Super Contributor
timestamp: September 25, 2016, 09:13:35 pm
content: Quote from: ebclr on September 25, 2016, 08:45:38 pmHonestly, the wiring on that board appears pretty straightforward to follow. It will be a good example for me to cite if someone foolishly tries to argue with my rant againstblack solder mask.The only documentation you really need is the data sheets for the relevant parts. You'll need those even if you do find a schematic for the board itself.

author: ebclr
author_rank: Super Contributor
timestamp: September 26, 2016, 01:07:22 am
content: Where in the datashets parts I will find VHL demos specific for this board ?I basically asked if someone as the same board and would like to share this files, only one reply is related to the original posts and can be considered useful, all others are useless that don't help in anyway. I hope the next post will not be to please connect power on the circuit. Think before write

author: Buriedcode
author_rank: Super Contributor
timestamp: September 27, 2016, 12:49:48 am
content: If you dont' have any luck with a schem/files, then I would trace it out by hand.The three headers already have pin numbers on them (I'm assuming they are all FPGA pin numbers) so you would jsut have to trace the cypress chip connections, and the SRAm (is it SRAM? I jsut assumed it was). Whilst it seems daunting, you'll be surprised how quickly it can be done, with a cup of coffee, a continuity tester and either pen and paper, or an Excel spreadsheet.I recent had to do it for an FPGA board that had footprints for SRAM, but the docs were long gone. I seem to remember it took me half way through an episode of the x-files.

author: legacy
author_rank: Super Contributor
timestamp: September 27, 2016, 10:07:40 am
content: @ebclrwe are lucky, I accessed my laptop (sorry I was 250 Km away from where I live, now I am back)and I found a backup of the whole DVD which was included with the board when I bought itgood news: we have itbad news1: it's mostly written in chinese and you need to sort things out(1)bad news2: it's 4Gbyte(1) even folder's labels are written in chinesealso there is a lot of confusion about the contentthings come with no orderyears ago I had sorted things out and focused on essential things(schematic, constraints, examples, doc written in English, etc)but then I deleted the folder since I don't use Alteraanyhow, here we go

author: legacy
author_rank: Super Contributor
timestamp: September 27, 2016, 10:20:31 am
content: p.s.examples are all written in Verilogand there are whole projects for Quartus2p.s.2it seems you can't directly access pdf filesAcrobat pdf-reader on both Windows XP and Linux claims errors due to the filenamewhich contains chinese characters (unicode?)but you can access those files once copied to the hard drive and property renamed

author: ebclr
author_rank: Super Contributor
timestamp: September 27, 2016, 02:11:16 pm
content: Thank's a lot manNormally those chinese CD's have a lot of stuffbasically i need only the demos files and projects ( VHDL or HDL )and the schematics, all other stuff is unnecessary if the size isn't so big after compress i can give you one ftp to upload or any other method you want