ALTDQ_DQS2 IP Core User Guide

ID 683742
Date 5/08/2017
Public
Document Table of Contents

Data Input Path for Arria V, Cyclone V, and Stratix V Devices

The DQ and DQS input paths in Arria V and Cyclone V devices are the same, except for an additional read FIFO block to implement the second-stage rate conversion DDIO. The high‑speed 4 x 8 read FIFO, clocked by the DQS clock, implements the half-rate to full-rate conversion, if necessary.

The following figure shows the data input path (when you enable the hard read FIFO) for Arria V, Cyclone V, and Stratix V devices.

Data Input Path for Arria V, Cyclone V, and Stratix V Devices