Freescale Semiconductor MK22FN256VDC12, Reference Manual

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LPUARTx_BAUD field descriptions (continued)
Field Description
22
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
21
RDMAE
Receiver Full DMA Enable
RDMAE configures the receiver data register full flag, LPUART_STAT[RDRF], to generate a DMA request.
0 DMA request disabled.
1 DMA request enabled.
20
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
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.
Table continues on the next page...
Register definition
K22F Sub-Family Reference Manual , Rev. 3, 7/2014
1222 Freescale Semiconductor, Inc.