Information
UARTx_C4 field descriptions (continued)
Field Description
See Match address operation for more information.
0 All data received is transferred to the data buffer if MAEN1 is cleared.
1 All data received with the most significant bit cleared, is discarded. All data received with the most
significant bit set, is compared with contents of MA2 register. If no match occurs, the data is
discarded. If a match occurs, data is transferred to the data buffer. This field must be cleared when
C7816[ISO7816E] is set/enabled.
5
M10
10-bit Mode select
Causes a tenth, non-memory mapped bit to be part of the serial transmission. This tenth bit is generated
and interpreted as a parity bit. The M10 field does not affect the LIN send or detect break behavior. If M10
is set, then both C1[M] and C1[PE] must also be set. This field must be cleared when C7816[ISO7816E]
is set/enabled.
See Data format (non ISO-7816) for more information.
0 The parity bit is the ninth bit in the serial transmission.
1 The parity bit is the tenth bit in the serial transmission.
4–0
BRFA
Baud Rate Fine Adjust
This bit field is used to add more timing resolution to the average baud frequency, in increments of 1/32.
See Baud rate generation for more information.
45.3.12 UART Control Register 5 (UARTx_C5)
Addresses: UART0_C5 is 4006_A000h base + Bh offset = 4006_A00Bh
UART1_C5 is 4006_B000h base + Bh offset = 4006_B00Bh
UART2_C5 is 4006_C000h base + Bh offset = 4006_C00Bh
Bit 7 6 5 4 3 2 1 0
Read
TDMAS
0
RDMAS
0
Write
Reset
0 0 0 0 0 0 0 0
UARTx_C5 field descriptions
Field Description
7
TDMAS
Transmitter DMA Select
Configures the transmit data register empty flag, S1[TDRE], to generate interrupt or DMA requests if
C2[TIE] is set.
NOTE: • If C2[TIE] is cleared, TDRE DMA and TDRE interrupt request signals are not asserted
when the TDRE flag is set, regardless of the state of TDMAS.
• If C2[TIE] and TDMAS are both set, then C2[TCIE] must be cleared, and D must not be
written unless a DMA request is being serviced.
Table continues on the next page...
Memory map and registers
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
1066 Freescale Semiconductor, Inc.