14.6.4.3 Transmit FIFO Configuration

FIFO 1 through FIFO 31 can be configured as transmit FIFOs by setting TXEN in the CxFIFOCONx register. The number of message objects in each transmit FIFO is configured using the FSIZE[4:0] bits (CxFIFOCONx[28:24]). All objects in one transmit FIFO use the same payload size (number of data bytes), which is determined by the PLSIZE[2:0] bits (CxFIFOCONx[31:29]).