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    BMA400 Documentation mistakes

    BMA400 Documentation mistakes

    MPortmannBSH
    New Poster

    Hi,

    Creating this post to point out some mistakes in the BMA400 documentation (BST-BMA400-DS000-11 Revision_2.0_022023)

    - Page 66 : function of bit filt1_bw not specified (detailed page 27/section 4.4)

    - Page 101 : description of command 0xb0 fifo_flush refers to FIFO_DOWNS registers not detailed in documentation (maybe old names for FIFO_LENGTHx registers?)

    - Page 76 : formula for wakeup_timeout_thres_11_4 has symbol error (should be timeout=temp*2.5ms)

    2 REPLIES 2

    BSTRobin
    Community Moderator
    Community Moderator

    Hi MPortmannBSH,

    Thank for your feedback.
    1. As shown on page 27, filt1_bw is used to set the bandwidth of the filter. When filt1_bw is set to 0, the filter bandwidth is 0.48 times the ODR. When filt1_bw is set to 1, the filter bandwidth is 0.24 times the ODR.

    filt1_bw.png
    2. As described on page 101, the meaning of this paragraph is that the fifo_flush command only clears FIFO data and does not modify the values of the FIFO_CONFIG and FIFO_DOWNS registers.

    FIFO FLUSH.png
    3. Yes, correct description should be "timeout=temp*2.5ms".

    FIFO FLUSH.png

    Hi,

    Sure, as I mentioned I'm not looking for technical support but reporting documentation issues you may have missed. Regarding filt1_bw, it should be mentionned in the CONFIG0 register documentation even if its purpose is described somewhere else.

    Regarding FIFO_DOWNS, it's the sole mention of this register in the documentation, that's why I pointed it out.

    Regards,

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