Differential Near End Termination

Programmable output termination is provided for many differential output types. By default, applications with differential signaling is terminated at the receiver (or far-end). However, near-end or source termination can be used to improve signal integrity in lossy connections.

Table 1. Source Termination Support
I/O Standard Values
LVDS25, LVDS33, MINILVDS25, MINILVDS33, LCMDS33, LCMDS25, PPDS25, PPDS33, RSDS25, RSDS33, SUBLVDS25, SUBLVDS331 OFF, 100. The default is OFF

The source termination values can be programmed by using the I/O attribute editor in Libero SoC or by using the following PDC command:

[-SOURCE_TERM <value>]

Note: Source termination is required for 1600 Mbps/800 Mhz clock.