Cyclone V Device Handbook: Volume 2: Transceivers

ID 683586
Date 10/24/2018
Document Table of Contents Programmable CTLE and DC Gain

Each receiver buffer has a single-tap programmable equalization circuit that boosts the high-frequency gain of the incoming signal, thereby compensating for the low-pass filter effects of the physical medium. The amount of high-frequency gain required depends on the loss characteristics of the physical medium. The equalization circuitry provides up to 4 dB of high-frequency boost.

Each receiver buffer also supports the programmable DC gain circuitry that provides an equal boost to the incoming signal across the frequency spectrum. The DC gain circuitry provides up to 3 dB of gain setting.