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Bit 2—Transmit End (TEND): Bit 2 is a status flag indicating that TDRE was set to 1 when the
last bit of a transmitted character was sent. TEND is a read-only bit and cannot be modified.
Bit 2: TEND
Description
0
Indicates that transmission is in progress
[Clearing conditions]
•
After reading TDRE = 1, cleared by writing 0 to TDRE.
•
When data is written to TDR by an instruction.
1
Indicates that a transmission has ended
(initial value)
[Setting conditions]
•
When bit TE in SCR3 is cleared to 0.
•
If TDRE is set to 1 when the last bit of a transmitted character is sent.
Bit 1—Multiprocessor Bit Receive (MPBR): Bit 1 holds the multiprocessor bit in data received
in asynchronous mode using a multiprocessor format. MPBR is a read-only bit and cannot be
modified.
Bit 1: MPBR
Description
0
Indicates reception of data in which the multiprocessor bit is 0
*
(initial value)
1
Indicates reception of data in which the multiprocessor bit is 1
Note:
*
If bit RE in SCR3 is cleared to 0 while a multiprocessor format is in use, MPBR retains its
previous state.
Bit 0—Multiprocessor Bit Transmit (MPBT): Bit 0 holds the multiprocessor bit to be added to
transmitted data when a multiprocessor format is used in asynchronous mode. Bit MPBT is
ignored when synchronous mode is chosen, when the multiprocessor communication function is
disabled, or when data transmission is disabled.
Bit 0: MPBT
Description
0
The multiprocessor bit in transmit data is 0
(initial value)
1
The multiprocessor bit in transmit data is 1