9.7.5.6 In-Band Interrupt (IBI)

The I3C protocol also gives provision to support in-band interrupts within the two-wire interface, which reduces the device pin count and signal paths. The in-band interrupt is initiated by the I3C target device to the I3CC.

Additionally, I3C uses in-band interrupts to generate hot-join requests (to request the I3CC to assign an I3C dynamic address).