HD6433636SW datasheet(249/418 Pages) RENESAS

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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

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.

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

Indicates reception of data in which the multiprocessor bit is 0* (initial value)

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

The multiprocessor bit in transmit data is 0

(initial value)

The multiprocessor bit in transmit data is 1

HD6433636SW Folha de dados(PDF) 249 Page - Renesas Technology Corp