SLUSDQ4 April 2019 BQ79606A-Q1
In SHUTDOWN mode, most of the circuits in the BQ79606A-Q1 are disabled. The functionality is limited in this mode and the quiescent current is very low as a result. While in SHUTDOWN, the BQ79606A-Q1 remains idle and strictly monitors the WAKEUP input (for a stand-alone or base/bridge device) for a low pulse or the COMx inputs (for stack devices) for a WAKE tone (Stack Device Wakeup and Hardware Shutdown). Once a WAKEUP signal or WAKE tone is received, the BQ79606A-Q1 transitions to ACTIVE mode. Table 6 specifies all of the circuits and functionality that are enabled or available in SHUTDOWN mode. Table 24 specifies the mode transition for SHUTDOWN mode response to the different tones for stack devices. Table 23 specifies the mode transition for SHUTDOWN mode response to the different signals for base devices. Additionally, the SYS_FAULT1[DRST] bit is set and is not cleared upon startup to signal to the host that a reset has occurred.