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DS90UB947-Q1: Hardware and software configuration

Amelie Zheng
Genius 10865 points

Part Number: DS90UB947-Q1

Hi Team,

Regarding the Mode0 setting of 947, the actual application is OLDI_DUAL, disable AUTO_SS, disalble Repeater (100), but the current resistance is set to (111) in the table below, is there any problem with this? Can it be configured by register setting?

  • 0
    TI__Mastermind 38870 points

    Hi Amelie,

    Thank you for reaching out to us. The strap table that you provided in this thread doesn't seems to look right. Please see attached snapshot below. Yes we have the register that you can check and toggle the bit as shown below 0x4F and 0xC2.

    Aaron

  • 0 in reply to Aaron Heng
    TI__Genius 10865 points

    Hi Aaron,

    Maybe I am not describe correctly.

    Take your snapshot  as example. If customer setup OLDI_DUAL and REPEATER 11 by register, but resistance setup as 82.5kohm and 105 kohm, which makes  OLDI_DUAL and REPEATER 10. It is conflict.

    If the hardware/resistance and software/resigter are conflict, will it have risk? is it ok? 

  • 0 in reply to Amelie Zheng
    TI__Guru** 103215 points

    Hello Amelie,

    The HW resistor divider sets up the modes which are initially loaded automatically during power up, but there is no issue to override any settings from the mode strap after power up

    Best Regards,

    Casey