Figure 1. PS Power Down Sequence Diagram
- Carrier asserts PWROFF_C2M_L (t0). Power sequencers immediately begin rolling back all power solutions.
- Upon first power supply not meeting the required stabilization requirements, all status signals and request signaling from the SOM are deasserted (t1).
- At VCCOEN_PS_M2C (t2) deassertion carrier turn off power to VCCO supplies.
- Carrier remove SOM5V0 (t3)
- SOM5V0 does not have to be removed, however, the discharge of related power supplies and power up rules must be observed before PWROFF_C2M_L (t5) can be deasserted.
- (t4) is observed to be the same point as (t0) in the power-up sequence.
- Rails discharge for up to 2 seconds (t5).