SNLS696A April 2021 – May 2021 TSER953
In External FrameSync mode, an external signal is input to the deserializer through one of the GPIO pins on the device. The external FrameSync signal may be propagated to one or more of the attached V3Link serializers through a GPIO signal in the back channel. The expected skew timing for external FrameSync mode is on the order of one back channel frame period or 600 ns when operating at 50 Mbps.
Enabling the external FrameSync mode is done on the deserializer side. Refer to the deserializer data sheet for more information.