Introductions: system architecture provides a technical overviews of the system design in terms of block diagrams, power tree, clock tree, and gpio assignments/configurations.
Clock Tree: This is similar to block diagram but instead it only contains all the clock traces from clock generator (e.g, SoC) to its sinks (e.g., radio).
- Typically a clock is synced by one source either from PMIC in the case of a battery powered system or from the SoC.
GPIO Table: This is a spreadsheet where all the GPIO interfaces are meticulously itemized according to GPIO pin #, pin name, net name, and pin mode (input/output/alternative), pullup/pulldown, and description.
- This is useful for following reasons:
- appropriate gpio assignments for communication interface requirements among host and its peripherals.
- easy and quick way for embedded software engineers to do pin configurations.