Cyclone V Device Handbook: Volume 2: Transceivers

ID 683586
Date 10/24/2018
Document Table of Contents Programmable Transmitter Differential OCT

The transmitter buffers support optional differential OCT resistances of 85, 100, 120, and 150 Ω . The resistance is adjusted by the on-chip calibration circuit during calibration, which compensates for PVT changes. The transmitter buffers are current mode drivers. Therefore, the resultant VOD is a function of the transmitter termination value.