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DS90UB913A/914A - Question about Address 0x06 "SER ID"

Kawai
Guru 19785 points

Hi Team,

Please allow me to ask you about the  Register 0x06 "SER ID".

* I understand about the alias (virtual ID) function.

[Q1]
In the datasheet Table4 (below), is the default value of address 0x06 [7:1] correct ?
If YES, why is this value ?

[Q2]
If address 0x06 [0] = 0, I am understanding that DS90UB913A ID information is sent in the forward channel, maybe during the initialization process, and DS90UB914A will load the Serializer ID information to address 0x06 [7:1]. This means that user would not need to program as long as "Remote ID" if "Freeze Device ID" Bit0 = 0. Am I correct ?

Best Regards,
Kawai

  • 0
    TI__Expert 5210 points

    Hi Takushi-san,

    1. Yes, the default serializer ID is 0x06[7:1]. When we chose serializer/deserializer device ID's, we ensure that they do not overlap with other FPD-Link III product families (i.e. 92x, 94x devices). 

    2. Correct. The deserializer will load the serializer device ID automatically if the deserializer or the host controller it is connected to is an I2C master. If the serializer is an I2C master, then the serializer will be loading the deserializer device ID instead. The only time the "Freeze Device ID" bit should be set to a 1 is when you are manually changing the device ID from its default value. This will prevent autoloading of the default serializer/deserializer device ID as stated. Keep in mind that if you have multiple serializers connected to the I2C master (i.e. deserializer/host controller), you might want to assign slave aliases to address each serializer individually over I2C.

    -Sean

  • 0 in reply to Sean Thornton1
    Guru 19785 points
    Hi Sean-san,Thank you for your support.
    About the SER_ID, is "Remote ID" = 0x0C correct in DS90UB914A register ?
    I was just wondering because the default value in the 914A register were not the 913A selectable ID range. I believe the selectable ID range using ID pin is 0x58 to 0x5D.
    Best Regards,Kawai
  • 0 in reply to Kawai
    TI__Expert 5210 points

    Hi Takushi-san,

    Keep in mind that this is only a default value. It will auto-populate with the correct SER ID (i.e. 0x58 for 913A) when a TI serializer device is connected.

    -Sean