Tool/software:
I have a question regarding the power-up sequence of the AM68.
I would like to design a power domain configuration similar to that of the SK-AM68.
According to the SK-AM68 schematic, VDD_MCU shares the same power domain with VDDAR_MCU, VDDAR_CORE, and VDDAR_CPU.
However, the AM68x datasheet (SPRSP91B – February 2023, revised December 2024), on page 129, states:
VDD_MCU is a digital voltage domain with a wide operational voltage range, allowing it to be grouped either with the VDDAR_MCU domain or with VDD_CORE. For the “Isolated MCU and Main Domains Power-Up Sequencing,” VDD_MCU can be grouped with VDDAR_MCU. VDD_MCU must ramp up before T2. If VDDAR_MCU is not grouped with VDD_MCU, it must ramp up at T3.
This seems contradictory to the SK-AM68 schematic. The schematic suggests that VDD_MCU is grouped with multiple domains, while the datasheet implies more specific grouping requirements.
Could you clarify this discrepancy?
