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DS90UB913Q-Q1: GPO2 GPO3 connection when not used

Given Ding
Genius 10195 points
Part Number: DS90UB913Q-Q1
Other Parts Discussed in Thread: DS90UB913A-Q1

 Hi,

Could you please kindly help check on if GPO2( CLKOUT) and GPO3( CLKIN) can be floating or connect to GND if not used in DS90UB913-Q1? I check the datasheet and seems no clear description. Thanks.

 

BRs

Given

  • 0
    TI__Mastermind 30515 points

    Hello,

    pls check d/s page6 in 913a-q1 d/s, it is recommended to pull GPO2 to GND with a minimum 40-kΩ resistor. for other GPIO pins, you can leave open if unused.

    GPO[2] pin can be configured to be the output for input signal coming from the GPIO[2] pin
    on the Deserializer or can be configured to be the output of the local register on the
    Serializer. It can also be configured to be the output clock pin when the DS90UB913A-Q1
    device is used in the External Oscillator mode. See Device Functional Modes section for a
    detailed description of External Oscillator Mode. It is recommended to pull GPO2 to GND
    with a minimum 40-kΩ resistor to ensure GPO2=LOW when PDB transitions from LOW to
    HIGH. Leave open if unused.

    regards,

    Steven