8.5.1.8 Write 2-Byte I2C Commands

A few I2C commands combine two 8-bit registers together to form a complete value. These commands include:

• ChargeCurrent()
• MaxChargeVoltage()
• IIN_DPM()
• OTGVoltage()
• InputVoltage()

Host has to write LSB command followed by MSB command. No other command can be inserted in between these two writes. The charger waits for the complete write to the two registers to decide whether to accept or ignore the new value.

After the completion of LSB and MSB bytes, the two bytes will be updated at the same time. If host writes MSB byte first, the command will be ignored. If the time between write of LSB and MSB bytes exceeds watchdog timer, both the LSB and MSB commands will be ignored.