188.8.131.52. Weak Pull-up Resistor
Each I/O pin provides an optional programmable pull-up resistor during user mode. The pull-up resistor, typically 25 kΩ, weakly holds the I/O to the VCCIO level.
The Intel® Arria® 10 device supports programmable weak pull-up resistors only on user I/O pins but not on dedicated configuration pins, dedicated clock pins, or JTAG pins .
If you enable this option, you cannot use the bus-hold feature.