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

ID 683213
Date 7/24/2020
Document Table of Contents

6.3.4. Programmable Differential Output Voltage

The programmable VOD settings allow you to adjust the output eye opening to optimize the trace length and power consumption. A higher VOD swing improves voltage margins at the receiver end, and a smaller VOD swing reduces power consumption. You can statically adjust the VOD of the differential signal by changing the VOD settings in the Intel® Quartus® Prime software Assignment Editor.

Figure 144. Differential VOD This figure shows the VOD of the differential LVDS output.

Table 67.   Intel® Quartus® Prime Software Assignment Editor—Programmable VOD This table lists the assignment name for programmable VOD and its possible values in the Intel® Quartus® Prime software Assignment Editor.
Field Assignment
To tx_out
Assignment name Programmable Differential Output Voltage (VOD)
Allowed values
  • Arria V GX, GT, SX, and ST—0 (low), 1 (medium), 2 (high). Default is 1.
  • Arria V GZ—0 (low), 1 (medium low), 2 (medium high), 3 (high). Default is 1.

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