Warning (169177) : <number> of pins must meet Altera requirements for 3.3-, 3.0-, and 2.5-V interfaces. For more information, refer to AN447: Interfacing Cyclone III and Cyclone IV Devices with 3.3/3.0/2.5-V LVTTL/LVCMOS I/O System - Warning (169177) : <number> of pins must meet Altera requirements for 3.3-, 3.0-, and 2.5-V interfaces. For more information, refer to AN447: Interfacing Cyclone III and Cyclone IV Devices with 3.3/3.0/2.5-V LVTTL/LVCMOS I/O System Description You may see the above warning when you assign 3.3/3.0/2.5-V LVTTL/LVCMOS I/O standards to input pins in Cyclone® III, Cyclone IV and Arria® II GX devices. This is an auto-generated messsage in the Quartus® II software and cannot be removed. Related Articles Warning: xx pins must meet Altera requirements for 3.3, 3.0, and 2.5-V interfaces. Refer to the device Application Note 447 (Interfacing Cyclone III Devices with 3.3/3.0/2.5-V LVTTL/LVCMOS I/O Systems). Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Arria® II GX FPGA', 'Cyclone® III FPGAs', 'Cyclone® III LS FPGA', 'Cyclone® IV E FPGA', 'Cyclone® IV GX FPGA'] ['novalue'] ['novalue'] ['novalue']