NXP Semiconductors Kinetis KE1xZ256, Reference Manual

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Field Function
RIDMAE configures the receiver idle flag, LPUART_STAT[IDLE], to generate a DMA request. When this
bit is set, reading LPUART_DATA when either DATA[RXEMPT] or DATA[IDLINE] bit is set, will generate
an End Of Packet response until the completion of the existing DMA transfer. During an End of Packet
response, reading the LPUART_DATA register will return 0x0000_33FF and does not pull data from the
FIFO.
0 - DMA request disabled.
1 - DMA request enabled.
19-18
MATCFG
Match Configuration
Configures the match addressing mode used.
00 - Address Match Wakeup
01 - Idle Match Wakeup
10 - Match On and Match Off
11 - Enables RWU on Data Match and Match On/Off for transmitter CTS input
17
BOTHEDGE
Both Edge Sampling
Enables sampling of the received data on both edges of the baud rate clock, effectively doubling the
number of times the receiver samples the input data for a given oversampling ratio. This bit must be set
for oversampling ratios between x4 and x7 and is optional for higher oversampling ratios. This bit should
only be changed when the receiver is disabled.
0 - Receiver samples input data using the rising edge of the baud rate clock.
1 - Receiver samples input data using the rising and falling edge of the baud rate clock.
16
RESYNCDIS
Resynchronization Disable
When set, disables the resynchronization of the received data word when a data one followed by data
zero transition is detected. This bit should only be changed when the receiver is disabled.
0 - Resynchronization during received data word is supported
1 - Resynchronization during received data word is disabled
15
LBKDIE
LIN Break Detect Interrupt Enable
LBKDIE enables the LIN break detect flag, LBKDIF, to generate interrupt requests.
0 - Hardware interrupts from LPUART_STAT[LBKDIF] disabled (use polling).
1 - Hardware interrupt requested when LPUART_STAT[LBKDIF] flag is 1.
14
RXEDGIE
RX Input Active Edge Interrupt Enable
Enables the receive input active edge, RXEDGIF, to generate interrupt requests. Changing CTRL[LOOP]
or CTRL[RSRC] when RXEDGIE is set can cause the RXEDGIF to set.
0 - Hardware interrupts from LPUART_STAT[RXEDGIF] disabled (use polling).
1 - Hardware interrupt requested when LPUART_STAT[RXEDGIF] flag is 1.
13
SBNS
Stop Bit Number Select
SBNS determines whether data characters are one or two stop bits. This bit should only be changed
when the transmitter and receiver are both disabled.
0 - One stop bit.
1 - Two stop bits.
12-0
SBR
Baud Rate Modulo Divisor.
The 13 bits in SBR[12:0] set the modulo divide rate for the baud rate generator. When SBR is 1 - 8191,
the baud rate equals "baud clock / ((OSR+1) * SBR)". The 13-bit baud rate setting [SBR12:SBR0] must
only be updated when the transmitter and receiver are both disabled (LPUART_CTRL[RE] and
LPUART_CTRL[TE] are both 0).
46.3.1.7 LPUART Status (STAT)
Register definition
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
1188 NXP Semiconductors