cchamp Posted May 22, 2017 Share Posted May 22, 2017 Hi, We'd like to buy a Genesys 2 board, but I have a few questions. There are 80 differential pairs wired on FMC connector but 22 pairs can only be used if FMC provide power to the HB bank. Do you think we could provide this power signal by redirecting an fpga power signal back to HB bank on our FMC ? Regards, Cedric Link to comment Share on other sites More sharing options...
jpeyron Posted May 22, 2017 Share Posted May 22, 2017 Hi @cchamp, You can use the VADJ power rail to redirect it back to the board like you describe as long as you do not exceed the 5A limit as shown in the reference manual here in section 2 power supplies in Table 2. Voltage rail power settings VADJ (1.2-3.3 V). cheers, Jon Link to comment Share on other sites More sharing options...
cchamp Posted May 23, 2017 Author Share Posted May 23, 2017 Fine, it shouldn't exceed 5A anyway, we just want to have as many differential pairs as possible. Thanks for your help Cedric Link to comment Share on other sites More sharing options...
cchamp Posted May 24, 2017 Author Share Posted May 24, 2017 Do we only have to wire Vadj to VIO_B_M2C on our FMC board ? Regards Cedric Link to comment Share on other sites More sharing options...
jpeyron Posted May 24, 2017 Share Posted May 24, 2017 Hi @cchamp, Yes. Also just to re-iterate that you need to make sure that you are not exceeding the current limitations I mentioned in the above comment. cheers, Jon Link to comment Share on other sites More sharing options...
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