SLVAE87A December 2020 – October 2023 BQ79600-Q1 , BQ79612-Q1 , BQ79614-Q1 , BQ79616-Q1 , BQ79652-Q1 , BQ79654-Q1 , BQ79656-Q1
A ping is a specific high-low-high signal sent from MCU to the base device through the RX pin. Pings are used on the base device as only the base device is connected to the host from which the UART RX is accessible. The device detects the low pulse duration of the ping to differentiate between the different pings. There are total of 4 different pings as shown in Figure 8-3.