SLUSDQ4 April 2019 BQ79606A-Q1
The register COMM_TO[SHORT] sets the acceptable period for no valid communications from either the UART interface or the daisy-chain interface. The timer is reset every time a valid response or 0 command frame is received. If enabled, when the timeout expires, the BQ79606A-Q1 recognizes a communication timeout fault and sets the SYS_FAULT1[CTS] bit. To avoid getting a power-down communications fault before a communications timeout fault, ensure the COMM_TO[SHORT] time is shorter than the COMM_TO[LONG] time.