Information

UARTx_C2 field descriptions
Field Description
7
TIE
Transmitter Interrupt or DMA Transfer Enable.
TIE enables the S1[TDRE] flag, to generate interrupt requests or DMA transfer requests, based on the
state of C5[TDMAS].
NOTE: If C2[TIE] and C5[TDMAS] are both set, then TCIE must be cleared, and D[D] must not be
written outside of servicing of a DMA request.
0 TDRE interrupt and DMA transfer requests disabled.
1 TDRE interrupt or DMA transfer requests enabled.
6
TCIE
Transmission Complete Interrupt Enable
TCIE enables the transmission complete flag, S1[TC], to generate interrupt requests.
0 TC interrupt requests disabled.
1 TC interrupt requests enabled.
5
RIE
Receiver Full Interrupt or DMA Transfer Enable
RIE enables the S1[RDRF] flag, to generate interrupt requests or DMA transfer requests, based on the
state of C5[RDMAS].
0 RDRF interrupt and DMA transfer requests disabled.
1 RDRF interrupt or DMA transfer requests enabled
4
ILIE
Idle Line Interrupt Enable
ILIE enables the idle line flag, S1[IDLE], to generate interrupt requests, based on the state of
C5[ILDMAS].
0 IDLE interrupt requests disabled.
1 IDLE interrupt requests enabled.
3
TE
Transmitter Enable
TE enables the UART transmitter.The TE bit can be used to queue an idle preamble by clearing and then
setting the TE bit. When 7816E is set/enabled and C7816[TTYPE] = 1, this bit is automatically cleared
after the requested block has been transmitted. This condition is detected when TL7816[TLEN] = 0 and
four additional characters have been transmitted.
0 Transmitter off.
1 Transmitter on.
2
RE
Receiver Enable
RE enables the UART receiver.
0 Receiver off.
1 Receiver on.
1
RWU
Receiver Wakeup Control
This bit can be set to place the UART receiver in a standby state. RWU automatically clears when an
RWU event occurs (an IDLE event when C1[WAKE] is clear or an address match when C1[WAKE] is set).
This bit must be cleared when 7816E is set.
Table continues on the next page...
Memory map and registers
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
1304 Freescale Semiconductor, Inc.