Honored ContributorI am looking for the most simple method for an FPGA to send data to, and receive data from, a PC at relatively high speed of 5MBits/second.
The way I have done this previously is by using a FT232 chip to act as a virtual com port. However, this will be too slow for the speeds I need. And USB is the preferred choice for comms. Does any one have experience with such a system? Help much appreciated
Honored ContributorTry the FT232H chip. I don't use it but I known it is prepared for high-speed USB communications.
Honored ContributorAre there no faster FTDI chips? What about FT2232H?
Honored ContributorThanks for the replies, do the FT232H and the FT2232H still show up as virtual com ports on the computer?
Honored ContributorI think FT2232H can behave as uart or as fifo paralell port.
Honored ContributorI think, there are 2 different drivers provided by FTDI. Using one the device occurs as direct USB device, using other one - as virtual COM port.
Honored ContributorOK, so I would have to use it as a direct USB device at 5Mbits/second, because COM ports can't handle this speed, right?
Honored ContributorIt's a virtual com port. There would be only USB connector, no COM ports. And FTDI to FPGA interface should handle 5 Mbits/s.
Honored ContributorHere's my FTDI testing notes:
http://www.ovro.caltech.edu/~dwh/correlator/pdf/ftdi.pdf The high-speed devices can operate in 60MB/s bursts in synchronous FIFO mode. Cheers, Dave
