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Altera_Forum
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15 years ago

USB fT245 max II

HI, im working with Max II . it has a CPLD and an device usb the FT245, do anybody have worked with that?, i did an example with labview and VHDL, i can communicate with pc, but the signal TXE doesnt...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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HI, im working with Max II . it has a CPLD and an device usb the FT245, do anybody have worked with that?, i did an example with labview and VHDL, i can communicate with pc, but the signal TXE doesnt work very well,

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What do you mean by "doesn't work well"?

TXE# starts out low, and after you pulse WR, it pulses high for about 500ns. When it goes low again, you can pulse WR again.

This is how it worked on the FT2232C device I was testing (in FT245 mode).

Cheers,

Dave