[FAQ] DS90UB935-Q1: FPD-Link Data Rate 3Gbps?

Although the 935 is described as a 3Gbps serializer device, please note that the lower speed is actually referring to the reduced CSI-2 available bandwidth, not the FPD-Link line rate. The 935 FPD-Link rates match 953 exactly - i.e. the forward channel runs at 4Gbps or 2Gbps depending on the clocking mode. There is no 3Gbps forward channel mode available in 935. There is no need to design a different PoC network for 935 and the channel recommendations are exactly the same between 935/953. The only difference between 935 and 953 is the allowed total CSI-2 input bandwidth. The 935 can accept up to 2.528Gbps (632Mbps/lane or 316MHz CSI-2 clock in 4 lane input mode). If less lanes are used, then the 935 can accept up to 800Mbps/lane, but the total CSI-2 bandwidth​ must be <= 2.528Gbps. Below is a data rate matrix: