After configuring all required peripherals on the host microcontroller unit (MCU), begin by pulling nCS low so pings can be sent. Furthermore, MOSI or TX signal from the MCU is used to send wake pings to the MOSI/RX pin of the base BQ79600-Q1. Additionally, send commands that instruct the BQ79600-Q1 to propagate a wake tone to the rest of the stacked BQ79616-Q1 devices.

1. Send WAKE ping:
   1. When using SPI, hold nCS low and after 2 us send a WAKE ping on MOSI/RX by pulling the line low for 2.75 ms (t_{HLD_WAKE}) to wake the BQ79600-Q1. Following this, wait 2 us and then bring nCS back high.
   2. When using UART, send a WAKE ping on MOSI/RX by pulling the line low for 2.75 ms (t_{HLD_WAKE}) to wake the BQ79600-Q1.
2. Wait at least 3.5 ms (t_{SU(WAKE_SHUT)}) to allow BQ79600-Q1 device to enter ACTIVE mode.
3. Send a single device write to BQ79600-Q1 to set CONTROL1[SEND_WAKE]=1, which wakes up all stacked BQ79616-Q1 devices.
4. After host completes sending the command, wait appropriate time to allow all devices to receive the WAKE tone and enter ACTIVE mode before starting Auto-Address sequence:
   • The duration of a WAKE tone is about 1.6 ms.
   • The time it takes for a BQ79616-Q1 device to enter ACTIVE mode from shutdown is about 10 ms.

   To calculate the total time to wait, add the WAKE tone duration plus the time to enter ACTIVE mode (total of 11.6 ms) and multiply the result by the number of stacked BQ79616-Q1 devices.