Supply Voltages for I/O Banks

Multiple I/O banks require the following bank power supplies listed in the table.

Table 1. Supply Pin
Name Description Nominal Operating Voltage
VDDIx Supply for I/O circuits in a bank For JTAG bank—1.8 V/2.5 V/3.3 V

For GPIO bank—1.2 V/1.5 V/

1.8 V/2.5 V/3.3 V

For HSIO bank—1.2 V/1.5 V/1.8 V

VDD25 Power for corner PLLs and PNVM 2.5 V
VDD18 Power for programming and HSIO receiver 1.8 V
VDDAUXx Auxiliary supply for I/O circuits. Auxiliary supply voltage must be set to 2.5 V or 3.3 V and must be always equal to or higher than VDDIx. See Table 3 GPIO Mixed Reference Receiver Mode for legal VDDI and VDDAUX combinations. Greater than or equal to VDDI. In cases where VDDI and VDDAUX in a given GPIO bank are both 2.5 V or 3.3 V, they should be tied together to the same supply.
VREF VREF is the supply reference voltage for reference receivers. Each bank can have only one VREF value. VREF can be externally supplied or internally generated, see Supply Voltages for I/O Banks for VREF assignment use model for more information. Depends on the I/O standards
VDDIx MSSIO Banks1 Supply for MSS I/O circuits in a bank 1.2 V/1.5 V/1.8 V/2.5 V/3.3 V
VDDIx MSS-SGMII Banks1 Supply for MSS-SGMII circuits in a bank 2.5 V/3.3 V
VDDIx MSS-DDR Banks1 Supply for MSS-DDR circuits in a bank 1.2 V/1.5 V/1.8 V
Note: 1. For PolarFire SoC FPGA only.
Note: For information about unused condition, see respective UG0726: PolarFire FPGA Board Design User Guide or PolarFire SoC FPGA Board Design Guidelines User Guide and PPAT.