NXP Semiconductors K32 L2A Series, Reference Manual, Page: 793 / 1379

29.3.4 Interrupts and DMA Requests
The following table illustrates the status flags that can generate the LPSPI interrupt and
LPSPI transmit/receive DMA requests.
Table 29-5. LPSPI Interrupts and DMA Requests
Flag Description Interrupt DMA Request Low Power Wakeup
TDF Data can be written to
transmit FIFO, as
configured by
TXWATER.
Y TX Y
RDF Data can be read from
the receive FIFO, as
configured by
RXWATER.
Y RX Y
WCF Word complete, last bit
of word has been
sampled.
Y N Y
FCF Frame complete, PCS
has negated .
Y N Y
TCF Transfer complete, PCS
has negated and
transmit/command
FIFO is empty.
Y N Y
TEF Transmit error flag,
indicates transmit/
command FIFO
underrun. This bit
cannot set in master
mode when NOSTALL
is clear.
Y N Y
REF Receive error flag,
indicates receive FIFO
overflow. This bit
cannot set in master
mode when NOSTALL
is clear.
Y N Y
DMF Data match flag,
received data has
matched the configured
data match value.
Y N Y
MBF LPSPI is busy
performing a SPI bus
transfer.
N N N
Chapter 29 Low Power Serial Peripheral Interface (LPSPI)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 793