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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

Hi,

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Do you realize that in Sync FIFO mode the FT2232 is a single channel device? When you load your fpga through channel B it must somehow reconfigure the FT2232 for dual channel mode. Are you sure you're switching back to single channel when you try to run in sync FIFO mode?

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I'm not sure to fully understand what you mean, I'm sure to use channel B to load my FPGA (with MorphLd utility) and then I use a little GUI made with CVI-LabWindows where I only connect to channel A.

I manage to have the clock at 60mhz from the fifo in my fpga and the rxf# working fine make me think it's not a problem of channels.

Alexis