Information

I2Sx_FCSR field descriptions (continued)
Field Description
1010 RFF set when more than or equal to 10 data word have been written to the Receive FIFO. Set
when RxFIFO = 10,11.....15 data words
1011 RFF set when more than or equal to 11 data word have been written to the Receive FIFO. Set
when RxFIFO = 11,12.....15 data words
1100 RFF set when more than or equal to 12 data word have been written to the Receive FIFO. Set
when RxFIFO = 12,13.....15 data words
1101 RFF set when more than or equal to 13 data word have been written to the Receive FIFO. Set
when RxFIFO = 13,14,15data words
1110 RFF set when more than or equal to 14 data word have been written to the Receive FIFO. Set
when RxFIFO = 14,15 data words
1111 RFF set when 15 data word have been written to the Receive FIFO (default). Set when RxFIFO =
15 data words
19–16
TFWM1
Transmit FIFO Empty WaterMark 1.
These bits control the threshold at which the TFE1 flag will be set. The TFE1 flag is set whenever the
empty slots in Tx FIFO exceed or are equal to the selected threshold.
0000 Reserved
0001 TFE set when there are more than or equal to 1 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 14 data.
0010 TFE set when there are more than or equal to 2 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 13 data.
0011 TFE set when there are more than or equal to 3 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 12 data.
0100 TFE set when there are more than or equal to 4 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 11 data.
0101 TFE set when there are more than or equal to 5 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 10 data.
0110 TFE set when there are more than or equal to 6 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 9 data.
0111 TFE set when there are more than or equal to 7 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 8 data.
1000 TFE set when there are more than or equal to 8 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 7 data.
1001 TFE set when there are more than or equal to 9 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 6 data.
1010 TFE set when there are more than or equal to 10 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 5 data.
1011 TFE set when there are more than or equal to 11 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 4 data.
1100 TFE set when there are more than or equal to 12 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 3 data.
1101 TFE set when there are more than or equal to 13 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 2 data.
1110 TFE set when there are more than or equal to 14 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 1 data.
1000 TFE set when there are more than or equal to 15 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 0 data.
15–12
RFCNT0
Receive FIFO Counter 0.
Table continues on the next page...
Chapter 50 Integrated interchip sound (I2S)
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 1519