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ADS131A02: the default value of CLK1 is error after the POR process

Charlie SHEN
Prodigy 20 points
Part Number: ADS131A02

Hi, I write a dirver of the device-ADS131A02 by myself, while i read the the register of CLK1(Clock configuration 1 Register), the value is 0x00.

the value of the register -CLK2 is 0x86.

according to the datasheet, the default value of CLK1 is 0x08 and the default value of CLK2 is 0x86. so , the value of read the CLK1 register is error, but the another is OK. why?

the register map as follows:

  • 0
    TI__Guru* 97465 points

    Charlie,


    The ADS131A02 communication is rather complicated, even for just reading back registers. Are you reading back a single register each time? Separately for CLK1 and CLK2? Can you report back the resulting sequence for the command and data? It might be best to get a logic analyzer (or oscilloscope) plot just to show the command sequence and output data.

    I'm not aware of any problems with reading back this register, although problems reading back from the device often occur because of this complicated interface.


    Joseph Wu


  • 0 in reply to Joseph Wu
    Prodigy 20 points

    Hi,Joseph

             Thanks for replying, the problem has resovled，because the macro  address of CLK1 is incorrect。