The DS90UB940-Q1 is a FPD-Link III deserializer which, together with theDS90UH949/947/929-Q1 serializers, converts 1-lane or 2-lane FPD-Link III streams into aMIPI® CSI-2 format. The deserializer can operate over cost-effective50-Ω single-ended coaxial or 100-Ω differential shielded twisted-pair (STP) cables. It recovers thedata from one or two FPD-Link III serial streams and translates it into a camera serial interface(CSI-2) format that can support video resolutions up to WUXGA and 1080p60 with 24-bit colordepth.
The FPD-Link III interface supports video and audio data transmission and full duplexcontrol, including I2C and SPI communication, over the same differential link. Consolidation ofvideo data and control over two differential pairs decreases the interconnect size and weight andsimplifies system design. EMI is minimized by the use of low voltage differential signaling, datascrambling, and randomization. In backward compatible mode, the device supports up to WXGA and 720presolutions with 24-bit color depth over a single differential link.
The device automatically senses the FPD-Link III channels and supplies a clock alignmentand de-skew functionality without the need for any special training patterns. This ensures skewphase tolerance from mismatches in interconnect wires such as PCB trace routing, cable pair-to-pairlength differences, and connector imbalances.