DS90UB953/954 system design and operation: Basic design rules
Understanding what hardware and software settings are important is critical to establishing a foundation for the 953/954 system. These settings can occur during or after power up and may need to be changed via software. As a result, these settings are routinely checked and verified before checking any of the other links in the system.
Specifically, this sections discusses: Diagnostics post power-up, mode and IDX pins, clocking modes between the 953/954, aliasing, I2C pass-through, port selection on 954, Analog Launch Pad (ALP), and successful I2C communication