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Altera_Forum
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10 years ago

FT2232H in Sync FIFO Mode - TXE# stuck high

hi, I have a Moprh-IC-II board and I'm trying to communicate via USB with a FT2232H in Sync FIFO Mode and D2XX Drivers. I manage to have the 60MHz clock input (my main fpga clock) from the...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

I can't say for sure, I've used the FT2232 many times and not had this problem. Have you checked the obvious, TXE# is connected to an FPGA input pin and not an output being driven high? Have you tried clearing the transmit buffer with FT_Clear()? Have you actually issued an FT_Read()? Does the FT_Read() come back with an error, timeout, etc? What is your host system/OS?