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BQ76930通过I2C发送指令进入不了 SHIP模式

各位原厂大神,我的BQ76930根据规格书设置SHUT_A和SHUT_B,但是设置完之后芯片LDO输出不会关闭,会导致我的单片机复位,连续设置几十次才有可能进入一次。。请问进入这个模式前需不需要设置其他寄存器,或者做其他的工作,我在规格书上好像没有看到要做其他的工作,只是说要保证SHUT_A和SHUT_B在设置前为0。

Star Xu:

您好,有特定的序列才能进入ship mode
To enter SHIP mode from NORMAL mode, the [SHUT_A] and [SHUT_B] bits in the SYS_CTRL1 register must
be written with specific patterns across two consecutive writes:
• Write #1: [SHUT_A] = 0, [SHUT_B] = 1
• Write #2: [SHUT_A] = 1, [SHUT_B] = 0
Note that [SHUT_A] and [SHUT_B] should each be in a 0 state prior to executing the shutdown command above.
If this specific sequence is entered into the device, the device transitions into SHIP mode. If any other sequence
is written to the [SHUT_A] and [SHUT_B] bits or if either of the two patterns is not correctly entered, the device
will not enter SHIP mode.

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