Honored Contributor
Honored ContributorWell that's my issue..
I have tried with the LVDS Signal. When I select in the pin planner the LVDS Signal I get this error. --------------------------------------------- Error (169029): Pin DATA_BUS_CLK_O_FRM_ADC is incompatible with I/O bank 6. Pin uses I/O standard LVDS, which has a VCCIO requirement incompatible with that bank's VCCIO setting or its other pins that use VCCIO 3.3V. Info (169073): Pin DATA_IN_FROM_ADC[0] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[1] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[2] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[3] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[4] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[5] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[6] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[7] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[8] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[9] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[10] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[11] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[12] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[13] in I/O bank 6 uses VCCIO 3.3V Info (169073): Pin DATA_IN_FROM_ADC[14] in I/O bank 6 uses VCCIO 3.3V My other pins are using 3.3 volts, for both input and outputs.... ---------------------------------------------- This goes back to my iniitial question, Is there a way to set pins T29/T30 on the cyclone 4 (Diffclk_3p) to accept a differential input? Even tho the VCCIO is set to 3.3V from that bank6? Since I am new to the Cyclone 4 chip, I am not doing something simple. Or that I am forgetting something. I am looking at the I/O Buff mega-function, for some solutions. still researching this. Can you set the pin input voltage different from the assigned VCCIO for that bank? In my mind and reading the docs? a big NO. Again, I am lost. To me You should be able to set the voltage level to almost anything on an __Input__ pin. But in this case not Differentially. But You do run the risk of damaging your device if your signal level goes over the designated value. (which in my case is possible, hence 3.3 Volts.) Thanks for you much valued input. Mike K
