Dear Sir or Madam,
I am trying to write data into DS90UB934-Q1 by I2C hiost connected directly to DS90UB934-Q1, but registers appeared to be locked. Read works fine (I am able to read default register values). I checked I2C bus with oscilloscope and DS90UB934-Q1 asserts acknowledge as exspected (after device and register addresses). Stop condition is also asserted by host. I am attempting single write to address 0x02 (I am writting 0x9E). I also tried other addresses but result is always the same. I2C bus timing also appears to be O.K. (100KHz SCL). Is there some write protect bit I am missing?
