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DS90UB935-Q1: there is some error in datasheet

Part Number: DS90UB935-Q1


Hi Expert,

There are several place indicating the FPD LINK rate is 4.16. So 935 FC rate is 3.16 or 4.16? That causes some confusion. Thanks a lot!

BR,

Elec Cheng

  • Hello Elec,

    Please note that 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.