57.9.6.1 Overview

The TWI includes two FIFOs which can be enabled/disabled using FLEX_TWI_CR.FIFOEN/FIFODIS. Both Host and Client modes must be disabled before enabling or disabling the FIFOs (FLEX_TWI_CR.MSDIS/SVDIS).

Writing FLEX_TWI_CR.FIFOEN to ‘1’ enables a 16-byte Transmit FIFO and a 16-byte Receive FIFO.

It is possible to write or to read single or multiple bytes in the same access to FLEX_TWI_THR/RHR, depending on FLEX_TWI_FMR.TXRDYM/RXRDYM settings.

Figure 57-136. TWI FIFOs Block Diagram