Hi, Is it possible to make a USB 1.1 interface only with FPGA chip, I mean, without addtional transceiver chip? Thanks a lot!
Regards, rat
Hi, Is it possible to make a USB 1.1 interface only with FPGA chip, I mean, without addtional transceiver chip? Thanks a lot!
Regards, rat
Not if I recall correctly. There are specific rise/fall-time requirements (and I forget what else) that FPGA I/Os don't support (or at least, didn't.)
Jason T. Wright
Have a look to
I had a look to the VHDL source, and to the schematic.
He's not using any external transceiver, it seems.
Now, if I just learnt japanese at school :-)...
Antonio, Try
I don't believe so, the signalling levels and pin tolerances of the USB spec aren't supported by any FPGA vendor AFAIK. You can get tiny SMD trancievers anyway so what's the problem?
Another question would be does anyone have a HOST controller core?
--Chuck
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.