Flush Non-Functional

Issuing a Flush by writing to the FLUSH bit in TWIn.MCTRLB can cause the TWI Host to be stuck in Unknown bus state (see BUSSTATE in TWIn.MSTATUS).

Work Around

Disable and re-enable the Host using the ENABLE bit in TWIn.MCTRLA. A normal operation does not require the use of FLUSH.

Affected Silicon Revisions

Rev. A3 Rev. A4
X X