Intel® Stratix® 10 High-Speed LVDS I/O User Guide

ID 683792
Date 7/13/2021

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2.2.2. 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 4. Differential VOD This figure shows the VOD of the differential LVDS output.

Table 5.   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 0 (low), 1 (medium low), 2 (medium high), 3 (high). Default is 2.

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