Single Data Rate (SDR) Mode

The I3C Target module on this device supports Single Data Rate (SDR) Mode. High Data Rate (HDR) modes are not supported; however, the module can detect HDR Exit and Restart patterns as explained in High Data Rate (HDR) Modes.

The I3C bus is always initialized and configured in SDR mode. The SDR mode is the default mode of the I3C bus and is used in the following ways:

  • Perform private messaging from the Controller device to the Target devices
  • Enter other modes and states, such as HDR modes
  • Use built-in I3C features such as Common Command Codes (CCCs), In-Band Interrupt (IBI), and Hot-Join
  • Transition from I2C to I3C through Dynamic Address Assignment
  • Perform legacy I2C transactions on I3C bus