Is a High-Keeper needed for the I3C Bus?
A High-Keeper is used for Controller-to-Target and Target-to-Controller Bus handoff, as well as optionally when the Bus is idle (see Q22.1, "What are some of the I3C Bus conditions when the Bus is considered inactive?"). The High-Keeper may be a passive weak Pull-Up resistor on the Bus, or an active weak Pull-Up (or equivalent) in the Controller. The High-Keeper is only required to be strong enough to prevent system-leakage from pulling the Bus Low.