57.9.6.8.1 TXRDY and RXRDY Configuration

It is possible to write one or more bytes in the same FLEX_TWI_THR/FLEX_TWI_RHR access. The TXRDY flag indicates if one or more bytes can be written in the FIFO depending on the configuration of FLEX_TWI_FMR.TXRDYM/RXRDYM.

When two bytes are written for each FLEX_TWI_THR access, the TXRDYM field can be configured so that the TXRDY flag is at ‘1’ only when at least two bytes can be written in the Transmit FIFO.

When four bytes are read for each FLEX_TWI_RHR access, the RXRDYM field can be configured so that the RXRDY flag is at ‘1’ only when at least four unread bytes are in the Receive FIFO.