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  1. #1
    Registered User
    Join Date
    Mar 2003
    Posts
    8

    RX, TX, DTR and DCD Signal Levels

    What are the signal levels for RX, TX, DTR and DCD on the Nokia 9210 Bottom Connector?

  2. #2
    Regular Contributor
    Join Date
    Mar 2003
    Posts
    157

    RE: RX, TX, DTR and DCD Signal Levels

    DCE_TXD input low level, min 0.0 V max 0.8 V
    input high level ,min 2.0 V max 2.9 V

    DCE_RDX output low level, min 0.0 V max 0.65 V
    output high level, min 2.0 V max 2.9 V

    DCE_DTR input low level, min 0 V max 0.5 V
    input high level, min 2.0 V max 2.9 V

    DCE_DCD output low level, min 0.0 V max 0.65 V
    output high level, min see specification max 2.9 V

    More information can be found from the Nokia 9210 Communicator Bottom Connector, Serial Interface Specification.

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