Section 12 Serial Communication Interface (SCI)
Rev. 3.00 Sep. 27, 2007 Page 420 of 758
REJ09B0243-0300
Bit Bit
Name
Initial
value
R/W Description
5 TE 0 R/W
Transmit
Enable
Enables or disables the SCI serial transmitter.
0: Transmitter disabled
*
1
1: Transmitter enabled
*
2
Notes: 1. The TDRE flag in SCSSR is fixed at 1.
2. Serial transmission starts after writing
transmit data into SCTDR and clearing the
TDRE flag in SCSSR to 0 while the
transmitter is enabled. Select the transmit
format in the serial mode register (SCSMR)
before setting TE to 1.
4 RE 0 R/W
Receive
Enable
Enables or disables the SCI serial receiver.
0: Receiver disabled
*
1
1: Receiver enabled
*
2
Notes: 1. Clearing RE to 0 does not affect the receive
flags (RDRF, FER, PER, and ORER). These
flags retain their previous values.
2. Serial reception starts when a start bit is
detected in asynchronous mode, or
synchronous clock input is detected in clock
synchronous mode. Select the receive
format in SCSMR before setting RE to 1.
3
MPIE
0
R/W Multiprocessor Interrupt Enable (only when MP = 1 in
SCSMR in asynchronous mode)
When this bit is set to 1, receive data in which the
multiprocessor bit is 0 is skipped and setting of the
RDRF, FER, and ORER status flags in SCSSR is
prohibited. On receiving data in which the
multiprocessor bit is 1, this bit is automatically cleared
to 0 and normal receiving operation is resumed. For
details, see section 12.4.4, Multiprocessor
Communication Function.
Содержание SH7124 R5F7124
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