The description says that the sys_reset_n is a bir pin driven from pmic to carrier for requiring full system reset.My question is that how to initiate the full system reset and which is the full system reset pin?
In OEM DG, there is usage description of the pin: System Reset: Connected to NRST_IO of PMIC. Bidirectional reset driven from PMIC to carrier board for devices requiring full system reset. Can also be driven from carrier board to module to initiate full system reset (including PMIC) (i.e. From RESET button). 1kΩ pull-up to 1.8V is present on the module.
If the reset driven from PMIC to carrier board for devices requiring full reset，is that means the xavir needs a power down sequence and a power up sequence?
There is power up/down sequence of Xavier itself listed in OEM DG, the external devices can refer to that.