Cyclone V Device Handbook: Volume 2: Transceivers

ID 683586
Date 10/24/2018
Document Table of Contents Programmable Transmitter Analog Settings

Figure 12. VOD (Differential) Signal Level

Each transmit buffer has programmable pre-emphasis circuits that boost high frequencies in the transmit data signal, which might be attenuated in the transmission media. Using pre-emphasis can maximize the data eye opening at the far-end receiver. The pre-emphasis circuitry provides first post-tap settings with up to 6 dB of high-frequency boost.