
RS9116 CC0 Connectivity Module Datasheet v1.0.10, December 2021
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3.3.2 Power Sequence
The POC_IN and RESET_N signals should be controlled from external sources such as R/C circuits, and/or other MCU's GPIOs. However POC_OUT can be connected to
POC_IN through an R-C, if the supply voltage is 3.3V. Below waveforms show power sequence (Up & Down) requirements under various application needs. Note that below
waveforms are not to scale.
3.3.2.1
Power-Up and Down Sequence with External 1.4V supply and POC_IN
The diagram below shows connections of various power supply voltages, POC_IN and RESET_N. These connections can be used when:
•
System PMU (outside RS9116) can provide 1.4V supply, and hence the internal Buck regulator in RS9116 can be disabled.
•
The 1.1V supply is still derived from LDO SoC (internal to RS9116).
•
POC_IN is controlled externally.
NOTE:
1. Above shown is a typical connection diagram. Some of the supply pins shown above may or may not be present in the IC/Module. Check the Pinout table in this
datasheet and connect accordingly.
2. * = Provide the supply voltages as per the specifications mentioned in this datasheet.
3. ** = USB power supply input connection is required if USB interface is present and used. Else, follow the connection as shown in Reference Schematics.