1.3 User I/O

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PolarFire FPGAs have two types of I/O buffers: HSIO and GPIO. HSIO buffers are optimized for  single-ended buffers with supplies from 1.2V to 1.8V. GPIO buffers support single-ended and true differential interfaces with supplies from 1.2V to 3.3V.

Important: When the HSIO bank is configured as an LVDS receiver, the concerned I/Os must be connected externally by a 100Ω resistor.

For more information about key features of I/O buffers and supported standards, see PolarFire FPGA Packaging and Pin Descriptions User Guide and PolarFire FPGA and PolarFire FPGA and PolarFire SoC FPGA User I/O User Guide .