This user’s guide describes a power distribution network (PDN), PDN-1A, using the TPS6594-Q1 and the LP8764-Q1 devices to supply the J721E processor with combined MCU and Main power rails.

The following topics are described to clarify platform system operation:

1. PDN power resource connections
2. PDN digital control connections
3. Primary (TPS6594-Q1) and secondary (LP8764-Q1) PMIC static NVM contents
4. PMIC sequencing settings to support different PDN power state transitions for an advanced processor system

PMIC and processor data manuals provide recommended operating conditions, electrical characteristics, recommended external components, package details, register maps, and overall component functionality. In the event of any inconsistency between any user's guide, application report, or other referenced material, the data sheet specification is the definitive source.