RobertDJordan

Hello, I am trying to get the Single-ended analog inputs working (CK_A0...) with the XADC, but can only find examples using the differential inputs. This example looks to use the differential inputs (which i can get running and it works work fine for me) https://github.com/Digilent/Arty-Z7-20-xadc/tree/master but when i attempt to connect the pins that are used for CK_A0 ect... i get a warning about having mixed voltages on the bank [Place 30-372] Bank 35 has terminals with incompatible standards: Incompatible Pair of IO Standards: (IN of IO Standard LVCMOS33) & (IN of IO Standard LVCMOS18) have incompatible Vccs The following terminals correspond to these IO Standards: SioStd: LVCMOS33 VCCO = 3.3 Termination: 0 TermDir: In Bank: 35 Placed GClock : Term: clk SioStd: LVCMOS18 VCCO = 1.8 Termination: 0 TermDir: In Bank: 35 Placed : Term: xa_n[0] Term: xa_n[1] Term: xa_p[0] Term: xa_p[1] Incompatible Pair of IO Standards: (IN of IO Standard LVCMOS18) & (IN of IO Standard LVCMOS33) have incompatible Vccs The following terminals correspond to these IO Standards: SioStd: LVCMOS18 VCCO = 1.8 Termination: 0 TermDir: In Bank: 35 Placed : Term: xa_n[0] Term: xa_n[1] Term: xa_p[0] Term: xa_p[1] SioStd: LVCMOS33 VCCO = 3.3 Termination: 0 TermDir: In Bank: 35 Placed : Term: sw[0] Term: and sw[1] I checked the XADC guide and it looks like these pins should run at 1v8, how can i use them if there are other things like switches, and the clock on that bus running at 3v3? Thanks Any help is appreciated