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DS90UB954-Q1: DS90UB954

Amy Luo
Expert 6895 points
Part Number: DS90UB954-Q1

Hi team,

One of our customer's issues, I'm forwarding it below, could you please provide some troubleshooting suggestions

2 lane,raw10,none sync, twisted mode, configured as follows:

9'd0: i2c_data[23:0] <= {8'h32,8'h01 ,8'h00 }; //reset
9'd1: i2c_data[23:0] <= {8'h32,8'h02 ,8'h53 };
9'd2: i2c_data[23:0] <= {8'h32,8'h03 ,8'h12 }; /////non sync
9'd3: i2c_data[23:0] <= {8'h32,8'h05 ,8'h03 }; /////non sync
9'd4: i2c_data[23:0] <= {8'h32,8'h06 ,8'h66 };
9'd5: i2c_data[23:0] <= {8'h32,8'h07 ,8'h7d };
9'd6: i2c_data[23:0] <= {8'h32,8'h33 ,8'h00 };//datapath control 1
/////////////////////////////////////////////954////////////////////////////////////////////////////
9'd7: i2c_data[23:0] <= {8'h7A,8'h01 ,8'h00 };////reset
9'd8: i2c_data[23:0] <= {8'h7A,8'h33 ,8'h23 }; /////2lane
9'd9: i2c_data[23:0] <= {8'h7A,8'h20 ,8'h00 }; ///// rx0
9'd10: i2c_data[23:0] <= {8'h7A,8'h4C ,8'h03 };
9'd11: i2c_data[23:0] <= {8'h7A,8'h6D ,8'h78 };
9'd12: i2c_data[23:0] <= {8'h7A,8'h70 ,8'h2B };
9'd13: i2c_data[23:0] <= {8'h7A,8'h7C ,8'h01 };
9'd14: i2c_data[23:0] <= {8'h7A,8'hBA ,8'h03 };
9'd15: i2c_data[23:0] <= {16'hffff ,8'hff } ;//

Now there is a normal mipi signal coming out, but the receiving side FPGA cannot resolve the mipi. If the sensor is connected directly, it can display the image normally.

Any troubleshooting ideas are appreciated.

Best Regards,

Amy Luo

  • 0
    TI__Mastermind 26850 points

    Hi Amy,

    Could you clarify what the mipi signal not being resolved looks like? Is the image being displayed incorrectly or is the display black? What is the 954's partner device? Looking at register 0x6D, the 954 appears to actually be in CSI mode. Check what mode the device is currently strapped to, the voltage divider setting the mode may be set up incorrectly.

    Regards,

    Darrah

  • 0
    Prodigy 70 points

    it resolved,but when insert two sensors and config two ports,the port1 does't work ,but port0 works correctly. and the 954 two input ports  have signal but port1 has no output singal.

  • 0 in reply to t gh
    TI__Mastermind 26850 points

    Can you provide more details about your configuration and what you are seeing? Are you trying to operating in Raw10 mode or CSI? What is the partner device? Are you using the 954 in replicate mode?