SLUSDQ4 April 2019 BQ79606A-Q1
The plots below shows the wake up timing of 17 devices. One device is used as a base and 16 devices as stack. The WAKEUP pin of the base device is hold low for approximately 270us and base send wake up tone upstream. The wake up tone is tCOMTONE long. SLEEP to ACTIVE tone sending is 40 tones at max. The experiment below show 4.4ms time for each device to wake up. It took total of 75ms for 17 devices to wake up.
Channel 1: WAKEUP pin of the base device. Channel 2: COML* pin of the device 16. Channel 3: COML* pin of the device 15. Channel 4: AVDD pin of device 16.