hi indrajit, for single ended output ------------------------------- as matt points out, because the Vccio pins for these banks is hardwired to 2.5 volts, the single ended output voltage will be 0 to 2.5 volts and is not programmable.
for single ended input ------------------------------ if you are using some or all of the pins as single ended inputs, then i think you can configure each pin to accept whatever range of input voltage you like, (as long as you don't exceed the data sheet maximums). xilinx tools let you program each pin's threshold voltage independently. best wishes, dan On Tue, Jul 11, 2017 at 8:32 AM, Indrajit Vittal Barve <indra...@iiap.res.in > wrote: > Thanks Matt dexter, > I also got the same page and bank details. But > I am looking for the single ended usage. > > With thanks and regards > Indrajit > On 11 Jul 2017 8:48 p.m., Matt Dexter <mdex...@berkeley.edu> wrote: > > Hi, > > I've never used the QSH signals as single ended IO. > > Page 12 of The Roach1 Schematics shows the source of the QSH_A/B_D_P/N > signals > as FPGA IO banks 3, 11, 13, 15, 17, 19, 21 > page 4 shows those banks powered at 2V5 aka 2.5VDC. > The 2V5 signal is hardwired to the VCCIO pins; there is no jumper. > > Thus I'd predict only 2.5V IO levels would be supported on the QSH > signals. > > Matt > > > On Tue, 11 Jul 2017, indrajit wrote: > > > Date: Tue, 11 Jul 2017 08:35:21 +0530 > > From: indrajit <indra...@iiap.res.in> > > To: CASPER Mailing List <casper@lists.berkeley.edu> > > Subject: [casper] QSH I/O as single ended signal. > > > > Dear All, > > > > Is there any one used QSH-DP LVDS I/O on ROACH-1 as single ended signal > > output. > > QSH Yellow block has an option Single ended. > > If then what is the output level is it 3.3V or 2.5 V ? > > > > Thanks > > Indrajit > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "casper@lists.berkeley.edu" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to casper+unsubscr...@lists.berkeley.edu. > > To post to this group, send email to casper@lists.berkeley.edu. > > > > -- > You received this message because you are subscribed to the Google Groups " > casper@lists.berkeley.edu" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu. > To post to this group, send email to casper@lists.berkeley.edu. > > -- > You received this message because you are subscribed to the Google Groups " > casper@lists.berkeley.edu" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu. > To post to this group, send email to casper@lists.berkeley.edu. > -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To post to this group, send email to casper@lists.berkeley.edu.
