NXP Semiconductors K32 L2A Series, Reference Manual, Page: 771 / 1379

LPSPIx_SR field descriptions (continued)
Field Description
12
REF
Receive Error Flag
This flag will set when the Receiver FIFO overflows.
0 Receive FIFO has not overflowed.
1 Receive FIFO has overflowed.
11
TEF
Transmit Error Flag
This flag will set when the Transmit FIFO underruns.
0 Transmit FIFO underrun has not occurred.
1 Transmit FIFO underrun has occurred
10
TCF
Transfer Complete Flag
This flag will set in master mode when the LPSPI returns to idle state with the transmit FIFO empty.
0 All transfers have not completed.
1 All transfers have completed.
9
FCF
Frame Complete Flag
This flag will set at the end of each frame transfer, when the PCS negates.
0 Frame transfer has not completed.
1 Frame transfer has completed.
8
WCF
Word Complete Flag
This flag will set when the last bit of a received word is sampled.
0 Transfer word not completed.
1 Transfer word completed.
7–2
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
1
RDF
Receive Data Flag
The Receive Data Flag is set whenever the number of words in the receive FIFO is greater than
RXWATER.
0 Receive Data is not ready.
1 Receive data is ready.
0
TDF
Transmit Data Flag
The Transmit Data Flag is set whenever the number of words in the transmit FIFO is equal or less than
TXWATER.
0 Transmit data not requested.
1 Transmit data is requested.
Chapter 29 Low Power Serial Peripheral Interface (LPSPI)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 771