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AWR1243：CSI level matching

user5315198
Prodigy 60 points
Part Number: AWR1243

The CSI power of the processor is 1.2v, does it match the 1.8v power CSI of AWR1243?They're both d-phy.

  • 0
    TI__Guru*** 148334 points

    Hi,

    We will need a few day to get back to you

    thank you

    Cesar

  • 0 in reply to Cesar
    Prodigy 60 points

    Hello, looking forward to your reply.

    I checked the d-phy V1.1 specification of MIPI, which stipulated that LP Transmitter VOH was 1.1v-1.3v.

    In the datasheet of AWR1243, the mode level of lp-11 is VOH. According to the datasheet specification, the minimum VOH is 1.35v under the power supply of 1.8v, which is inconsistent with the d-phy specification.

    thank you

  • 0 in reply to user5315198
    TI__Guru 58035 points

    Hello,

    As long as the receiver is MIPI spec compliant it should not be an issue. How they have implemented the power supply network should not matter (even though I am surprised that the D-Phy receiver is operating of only 1.2V supply).

    The VOH table you are referring to in the 1243 datasheet  are for digital IOs and not CSI signals. There is a separate CSI section where the timings are mentioned and remaining specs are based on the MIPI D-Phy specs.

    Regards,

    Vivek