Information

I2Sx_FCSR field descriptions (continued)
Field Description
1100 12 data word in receive FIFO.
1101 13 data word in receive FIFO.
1110 14 data word in receive FIFO.
1111 15 data word in receive FIFO.
27–24
TFCNT1
Transmit FIFO Counter1.
These bits indicate the number of data words in Transmit FIFO.
0000 0 data word in transmit FIFO.
0001 1 data word in transmit FIFO.
0010 2 data word in transmit FIFO.
0011 3 data word in transmit FIFO.
0100 4 data word in transmit FIFO.
0101 5 data word in transmit FIFO.
0110 6 data word in transmit FIFO.
0111 7 data word in transmit FIFO.
1000 8 data word in transmit FIFO.
1001 9 data word in transmit FIFO.
1010 10 data word in transmit FIFO.
1011 11 data word in transmit FIFO.
1100 12 data word in transmit FIFO.
1101 13 data word in transmit FIFO.
1110 14 data word in transmit FIFO.
1111 15 data word in transmit FIFO.
23–20
RFWM1
Receive FIFO Full WaterMark 1.
These bits control the threshold at which the RFF1 flag will be set. The RFF1 flag is set whenever the
data level in Rx FIFO 1 reaches the selected threshold.
0000 Reserved
0001 RFF set when at least one data word have been written to the Receive FIFO Set when RxFIFO =
1,2.....15 data words
0010 RFF set when more than or equal to 2 data word have been written to the Receive FIFO. Set
when RxFIFO = 2,3.....15 data words
0011 RFF set when more than or equal to 3 data word have been written to the Receive FIFO. Set
when RxFIFO = 3,4.....15 data words
0100 RFF set when more than or equal to 4 data word have been written to the Receive FIFO. Set
when RxFIFO = 4,5.....15 data words
0101 RFF set when more than or equal to 5 data word have been written to the Receive FIFO. Set
when RxFIFO = 5,6.....15 data words
0110 RFF set when more than or equal to 6 data word have been written to the Receive. Set when
RxFIFO = 6,7......15 data words
0111 RFF set when more than or equal to 7 data word have been written to the Receive FIFO. Set
when RxFIFO = 7,8......15 data words
1000 RFF set when more than or equal to 8 data word have been written to the Receive FIFO. Set
when RxFIFO = 8,9......15 data words
1001 RFF set when more than or equal to 9 data word have been written to the Receive FIFO. Set
when RxFIFO = 9,10.....15 data words
Table continues on the next page...
Memory map/register definition
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
1518 Freescale Semiconductor, Inc.