Guest josheeg Posted August 19, 2010 Report Share Posted August 19, 2010 Does anyone have high speed USB experience with the xilinx fpga? I found a solution for full speed usb in Xilinx FPGA HDL code and a external chip & open source design. I would like to implement it normal com port communication is too slow for my project. This would be a open source design using Papilio USB3250 is the usb chip & this place uses the xilinx fpga to make a virtual com port USB system that is easy to interface to with a xilinx & the usb3250. http://www.xs4all.nl/~rjoris/fpga/usb.html ;D Link to comment Share on other sites More sharing options...
Jack Gassett Posted August 19, 2010 Report Share Posted August 19, 2010 The existing 2 pin solution on the Papilio One board should work up to 1Mbit/s according to the FT2232 datasheet. I intend to make a Wing at some point that supports a high speed interface, either using an FT2232H or just using a USB PHY and an Opencores USB core. Link to comment Share on other sites More sharing options...
geokonst Posted November 25, 2010 Report Share Posted November 25, 2010 Hello Jack, The FT2232D datasheet states that the chip supports up to 3MBaud. But you say that the maximum baud rate on the papilio board is 115200. Why is that? Thank you! Link to comment Share on other sites More sharing options...
Jack Gassett Posted November 25, 2010 Report Share Posted November 25, 2010 Hello, You are absolutely correct, the top speed is not 115200. It should be possible to get 1-3Mbaud speed out of the two pin 232 UART mode that is connected. I haven't done much testing at these higher speeds yet, but I'm going to be doing some more work with the Sump Logic Analyzer code where I will try to squeeze as much speed as possible out of the chip. Jack. Link to comment Share on other sites More sharing options...
geokonst Posted November 25, 2010 Report Share Posted November 25, 2010 Great! I've got one of those too! Please let us know how it goes! Link to comment Share on other sites More sharing options...
Jack Gassett Posted November 30, 2010 Report Share Posted November 30, 2010 Ok, I've verified that the FT2232 UART works up to 3Mb/s. Take a look at the following example/tutorial. Xilinx VHDL UART Example Link to comment Share on other sites More sharing options...
geokonst Posted December 3, 2010 Report Share Posted December 3, 2010 Thank you Jack for the amazing tutorial and for posting it so fast. I was writing my own vhdl module to avoid using a microblaze, but soon realized that your approach actually saves space. Cheers! Link to comment Share on other sites More sharing options...
Guest pepevi Posted December 9, 2010 Report Share Posted December 9, 2010 I would be really interested in the high speed interface module! Link to comment Share on other sites More sharing options...
geokonst Posted June 2, 2011 Report Share Posted June 2, 2011 http://www.gadgetfactory.net/blog/?p=529 Great news! These will be amazing! I am definitely going to use the second one! Any estimate when to expect these? Pre-orders? Link to comment Share on other sites More sharing options...
Jack Gassett Posted June 5, 2011 Report Share Posted June 5, 2011 I hope to order parts and build the Wings this week maybe? I'll keep the new Video diary updated with the progress. Jack. Link to comment Share on other sites More sharing options...
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