XJAPI_PIN_DRIVE

Enumeration of the different pin output impedance values. There are two different impedances available:

XJAPI_DRIVE_HIGH

High drive, 35 ohms.

XJAPI_DRIVE_LOW

Low drive, 100 ohms.

In general, high drive is for parallel terminated signals and low is for unterminated signals. However, all circuits are different and this rule may not apply to your circuit.