[FAQ] Auto Protocol Selection Guide

This serves as a selection guide for our automotive-grade devices and outlines the typical protocols associated with these devices.

Do you need GPIO Reduction for Control Signals or Chip Select?

• Control Signal Expansion Follows Reduction in GPIO usage as follows:
• Without Mux:#N GPIO Pins can Control #N Devices
• With Mux:#N GPIO Pins Can Control 2^N Devices

Do you need to share a communication path with multiple end points?

• Multiple SOCs/ICs Communicating with the Same Peripheral
• Single Host Communicating With Different Subsystems

Do you need to isolate a communication path?

• Reduce overall bus capacitance to maintain signal integrity
• Reduce overall bus capacitance to comply with signal standard
• Mitigate slave address conflicts
• Prevent an unused peripheral from interfering with communication
• Maintain bus isolation during power sequencing