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DS160PR410: DS160PR410RNQT Question regarding SCL and SDA

AI WS
Prodigy 40 points
Part Number: DS160PR410


Dear TI,

Good day, I would like to ask about the DS160PR410RNQT chip. What are the SCL and SDA used for, is it used for activating the Linear Re-driver? I know SCL and SDA can communicate with other micro controllers based on unique addresses. However, I plan to activate multiple DS160PR410RNQT chip at the same time, do I need to put all of them the same address? In the datasheet I saw that it can trigger 1 by 1 after another DS160PR410RNQT have completed a task, but I want to use it in the different way, which is simultaneous.

Would like to add that I an inexperience in electronic field, please advice.

Thank you very much! Slight smile

Best Regards

  • 0
    TI__Guru* 93570 points

    Greetings,

    DS160PR410 can be optioned through pins, EEPROM, or SMBus interface - SCL and SDA signals. These are used to set different parameters such as equalizer gain settings. Please review the data sheet for details. Using SMBus or EEPROM, one can set different register settings one at a time. Through the pin setting would enable different options at the same time at power up.

    Regards,,Nasser

  • 0 in reply to Nasser Mohammadi
    Prodigy 40 points

    Dear Nasser, I have read the datasheet again, it seems that I need to put a LOW signal to the READ_EN_N in order for the chip to receive signal from SMBus Interface right? Please correct me if I am wrong. 

    I have also further read up and in SCL and SDA, there should not be any chip with the same address. Does that means that I cannot operating multiple chips at the same time or SCL and SDA have nothing to do with operating the chip? As far as I know, this chip was made to stabilize and maintain signal strength?

    Thank you!

  • 0 in reply to AI WS
    TI__Guru* 93570 points

    Greetings,

    1). Please note MODE pin description. In SMBus master mode with EEPROM, we need to pull this pin low to start reading from the EEPROM. Once we are in SMBus master mode and READ_EN is low, device starts reading from the EEPROM using SCL and SDA signals.

    2). SCL and SDA can be shared between different parts but each device needs to have its own unique SMBus address.

    Regards,,Nasser

  • 0 in reply to Nasser Mohammadi
    Prodigy 40 points

    Dear Nasser, Thank you for the reply and guidance but I am still not sure what is it that the SCL/SDA was used for. For my application, I just want this chip to boost or maintain my signal strength to go over longer distances and from some datasheet I have found out that SCL/SDA controls these: 

    1. Single Channel Write Selection
    2. Broadcast Write Selection
    3. Set CTLE Gain Level
    4. Set CTLE DC Gain Level
    5. Set VOD Level

    What if I just want it to boost signal strength, do I still need to use SCL/SDA?

    Correct me if I state anything wrong, please advice.

    Thank you very much! Slight smile

  • +1 in reply to AI WS
    TI__Guru* 93570 points

    Greetings,

    You can use the device in pin mode - please refer to the data sheet  for details - to set EQ gain or boost the signal. Therefor you don't need SMBus mode(for example SCL and SDA).

    Regards,,nasser

  • 0 in reply to Nasser Mohammadi
    Prodigy 40 points

    Dear Nasser,

    I understand now, thank you so much! Slight smile