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Original question:

DS90UB941AS-Q1: Symmetric/Asymmetric Splitting of DS90UB941

DS90UB941AS-Q1: DSI 2 lane mode

Ryan Wang
Expert 7750 points

Part Number: DS90UB941AS-Q1

Dear expert,

When I set DSI 2 lane mode, Lane 0, Lane 1 are used.  Can I use Lan2, Lane3 for 2 lane mode?

How about I set LANE_REVERSE=1?

Thanks

  • +1
    TI__Mastermind 33480 points

    Hi Ryan,
    It's possible to reverse the order of the lanes within a DSI port.
    You could do that through DEVICE_CFG Reg 0x2. Setting bit 0 and bit 4 high will reverse the lane order within each of the DSI ports.

    Example:
    DSI Port 0 Lanes 3, 2, 1, 0 inputs are mapped to Lanes 0, 1, 2, 3
    DSI Port 1 Lanes 3, 2, 1, 0 inputs are mapped to Lanes 0, 1, 2, 3

    Please refer to Datasheet section (8.3.1 DSI Receiver) - It explains how DSI1_LANE_REVERSE or DSI0_LANE_REVERSE fields are used in the DEVICE_CFG register.

    Regards,
    Fadi A.