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BQ25188: EN_RST_SHIP description, actions, and triggers

Part Number: BQ25188

Tool/software:

  1. Descriptions of the EN_RST_SHIP field isn't quite clear. Specifically:
    1. 2b01 = Enable shutdown mode and 2b10 = Enable ship mode, but what are the triggers to enter these modes?
    2. 2b11= Hardware Reset. Does the reset occur immediately after writing these bits or any additional trigger is required?
  2. Descriptions of Figure 8-9 and Figure 8-10 are as follows:
    1. EN_RST_SHIP = 01 (enable shutdown with wake on adapter
      insert only)
    2. EN_RST_SHIP = 10 (enable shutdown with wake on adapter
      insert only)

                   Maybe there are some mistakes in these descriptions?

  • Hello,

    Thanks for reaching out. I'll follow up with you on Monday, 7/21.

    Best regards,

    Alec

  • Hello Vadim,

    Thanks for reaching out and for your feedback. 

    Descriptions of the EN_RST_SHIP field isn't quite clear. Specifically:
    1. 2b01 = Enable shutdown mode and 2b10 = Enable ship mode, but what are the triggers to enter these modes?

    If a valid VIN is not connected, then shutdown mode or ship mode will be immediately entered after writing the corresponding EN_RST_SHIP bits.

    If a valid VIN is connected, and then the corresponding EN_RST_SHIP bits for shutdown mode or ship mode are written, these modes will be queued and entered upon removal of VIN.

    2b11= Hardware Reset. Does the reset occur immediately after writing these bits or any additional trigger is required?

    Hardware reset depends on the MR_RESET_VIN bit. If this bit is 0, then HW resets will occur immediately after writing the corresponding EN_RST_SHIP bits. If MR_RESET_VIN is 1, then HW resets will only occur if a valid VIN is connected (VIN = VIN_POWERGOOD).

    Descriptions of Figure 8-9 and Figure 8-10 are as follows:
    1. EN_RST_SHIP = 01 (enable shutdown with wake on adapter
      insert only)
    2. EN_RST_SHIP = 10 (enable shutdown with wake on adapter
      insert only)

    Thanks for pointing this out. This appears to be a mistake. We'll look to correct this.

    Best regards,

    Alec