BQ25890_16 Datasheet, PDF (37/69 Pages) Texas Instruments – Adjustable Voltage USB On-the-Go Boost Mode

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Device Functional Modes (continued)
POR
watchdog timer expired
Reset registers
I2C interface enabled
bq25890, bq25892
SLUSC86B – MARCH 2015 – REVISED MAY 2016
Y
I2C Write?
N
Default Mode
Reset watchdog timer
Reset selective registers
Host Mode
Start watchdog timer
Host programs registers
Y
WD_RST bit = 1?
N
Y
N
I2C Write?
Y
Watchdog Timer
N
Expired?
Figure 25. Watchdog Timer Flow Chart
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