A logic option that allows the Compiler to configure the on-chip termination (OCT) for a Stratix^™ GX gigabit transceiver block (GXB) receiver channel input pin, GXB transmitter channel output pin, GXB transmitter PLL clock input pin, or GXB receiver channel clock input pin.

This option is useful for preventing signal reflections and maintaining signal integrity.

This option is ignored if it is applied to anything other than a GXB receiver channel input pin, GXB transmitter channel output pin, GXB transmitter PLL clock input pin, or GXB receiver channel clock input pin. This option is available for Stratix GX devices.