    Legend :  NC  = Not Connected, unbonded pin
            PGND  = Unused I/O configured as additional Ground pin
             KPR  = Unused I/O with weak keeper (leave unconnected)
             WPU  = Unused I/O with weak pull up (leave unconnected)
             TIE  = Unused I/O floating -- must tie to VCC, GND or other signal
             VCC  = Dedicated Power Pin
          VCCAUX  = Power supply for JTAG pins
       VCCIO-3.3  = I/O supply voltage for LVTTL, LVCMOS33, SSTL3_I
       VCCIO-2.5  = I/O supply voltage for LVCMOS25, SSTL2_I
       VCCIO-1.8  = I/O supply voltage for LVCMOS18
       VCCIO-1.5  = I/O supply voltage for LVCMOS15, HSTL_I
            VREF  = Reference voltage for indicated input standard
             GND  = Dedicated Ground Pin
             TDI  = Test Data In, JTAG pin
             TDO  = Test Data Out, JTAG pin
             TCK  = Test Clock, JTAG pin
             TMS  = Test Mode Select, JTAG pin
      PROHIBITED  = User reserved pin