In some systems a DisplayPort redriver (like the DP130) would sit between the SN65DSI86 and the eDP panel. In these applications, it is important to train the DisplayPort link between the SN65DSI86 and the redriver to one setting and training the link between the redriver and the eDP panel to a different setting. For this application, Redriver Semi-Auto Link training can be used.

Redriver Semi-Auto Link training is essentially the same as Semi-Auto Link training with one major difference. That difference is Redriver Semi-Auto Link Training will never change the DP_TX_SWING, DP_PRE_EMPHASIS, and DP_POST_CURSOR2 levels being driven by the SN65DSI86. These settings will always stay fixed to their programmed values. The SN65DSI86 will still send all aux requests to the eDP panel DPCD registers. The redriver will snoop these aux transactions and train the link between it and the eDP panel.