Only if they have a way to turn off the Hot-Join feature. Hot-Join is not compatible with I2C masters, so Hot-Join would have to be disabled for the Slave to be used on a legacy I2C bus. The disabling of the Hot-Join feature should be done via some feature that is not part of the I3C protocol (i.e., not via the DISEC command), since an I²C master does not support the I3C protocol.

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