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DS90UB960-Q1: some questions

Jiawei Hu1
Expert 6025 points
Part Number: DS90UB960-Q1


Hi team,

  1. Could you kindly tell me how to configure CSI-2 timing at 1.2Gbps?
  2. Could you kindly tell me what is the max CSI-2 bandwidth per RX port of 662 and 964? 935 is 2.528, 954 is 3.328.

Thanks!

BR

Jiawei

  • 0
    TI__Guru** 111830 points

    Hello Jiawei,

    1) What timing do you mean? We do not configure or recommend changing the CSI-2 timing.

    2) The 662 has the same CSI-2 bandwidth of the 935, which is 2.528Gbps/ Rx port.

  • 0 in reply to Hamzeh Jaradat
    TI__Expert 6025 points

    Hi Hamzeh.

    Thanks for your reply.

    1. 960 will auto set csi timing at 800 and 1.6gbps. But won't auto set at other csi rate. Datasheet only give 400Mbps configuration, how about 1.2G?

    2. How about 964?

    BR

    Jiawei

  • 0 in reply to Jiawei Hu1
    TI__Guru** 111830 points

    1) Same thing for 1.2Gbps. You do not need to change anything! Only if using 400Mbps you should write the sequence in the datasheet.

    2) In this case 1330Mbps/ Rx port. See section "6 Data Rate Calculations" on this Appnote.

  • 0 in reply to Hamzeh Jaradat
    TI__Expert 6025 points

    Hi Hamzeh,

    Thanks! Could you kindly help me check my summary excel, appreciate!

    Deserializer Hub

    MAX CSI-2 Lane Speed

    CSI-2 Port

    MAX Output CSI-2 Bandwidth

    MAX CSI-2 Bandwidth Per RX Port

    DS90Ux936-Q1

    1.664Gbps

    1*4 Lane

    6.656Gbps

    2.528Gbps

    2*2 Lane

    DS90Ux954-Q1

    1.664Gbps

    1*4 Lane

    6.656Gbps

    3.328Gbps

    2*2 Lane

    DS90Ux964-Q1

    1.6Gbps

    2*4 Lane

    12.8Gbps

    1.330Gbps

    DS90Ux962-Q1

    1.664Gbps

    2*4 Lane

    13.312Gbps

    2.528Gbps

    DS90Ux662-Q1

    1.664Gbps

    1*4 Lane

    13.312Gbps

    		 2.528Gbps

    DS90Ux960-Q1

    1.664Gbps

    2*4 Lane

    13.312Gbps

    3.328Gbps

    BR

    Jiawei

  • 0 in reply to Jiawei Hu1
    TI__Guru** 111830 points

    Hello Jiawei,

    The 962 does not have 2x CSI-2 output ports. Just 1 port x4 lanes.

    The 662 and 962 max output CSI-2 bandwidth is 6.656Gbps.

    All ADAS devices are UB. There is no UH.

    NOTE: the max CSI-2 output bandwidth does not mean that you can output exactly the same data rates. Because there will be some CSI-2 blanking, depending on the used Forwarding mode. Please refer, for example, to 960 d/s, section "7.4.20 CSI-2 Output Bandwidth".