SNLS454A November 2014 – March 2019 DS90UB947-Q1
In Dual Link mode, the FPD-Link III TX splits a single video stream and sends alternating pixels on two downstream links. The receiver must be a DS90UB948-Q1 or DS90UB940-Q1, capable of receiving the dual-stream video. Dual link mode is capable of supporting an OpenLDI clock frequency of up to 170MHz, with each FPD-Link III TX port running at one-half the frequency. This allows support for full 1080p video. The secondary FPD-Link III link could be used for high-speed control.
Dual Link mode may be automatically configured when connected to a DS90UB948-Q1/DS90UB940-Q1, if the video meets minimum frequency requirements. Dual Link mode may also be forced using the DUAL_CTL1 register.