1.5 Static Address SDR Mode

The Static Address SDR mode is a special mode that allows the module to operate in I3C SDR mode (OPMD = 0b01) using the Static Address when a Dynamic Address is not assigned (or has been cleared). This special mode is activated by setting the SASDRMD bit during module initialization.

The module will continue to respond to ENTDAA CCC as usual for Dynamic Address Assignment. If a Dynamic Address is assigned in this mode, the module will participate in the I3C SDR transactions using both Static and Dynamic Addresses. The appropriate Static/Dynamic Address Match SADRIF/DADRIF bit will be set accordingly.

When an In-Band Interrupt is requested, the module will participate in address arbitration using the Dynamic Address first. If the module does not have a Dynamic Address assigned, Static Address is used for arbitration.

Tip: The I3C module on 8-bit PIC devices does not natively support Set All Addresses to Static Address (SETAASA) CCC. However, the Static Address SDR mode can be used with the Unsupported CCC UCCCIF flag to provide customized firmware support for SETAASA CCC.