Arria® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683213
Date 12/04/2025
Public
Document Table of Contents

6.4.2.1. Non-DPA Mode

The non-DPA mode disables the DPA and synchronizer blocks. Input serial data is registered at the rising edge of the serial LVDS_diffioclk clock that is produced by the left and right PLLs.

You can select the rising edge option with the Quartus® Prime IP Catalog. The LVDS_diffioclk clock that is generated by the left and right PLLs clocks the data realignment and deserializer blocks.

The following figure shows the non-DPA datapath block diagram. In SDR and DDR modes, the data width from the IOE is 1 and 2 bits, respectively.

Figure 151. Receiver Data Path in Non-DPA Mode


Note: A spread-spectrum input clock is not supported when using the ALTLVDS_RX IP in non-DPA mode. This is because it can introduce significant skew between the serial data and the source-synchronous clock output, resulting in improper receiver behavior.