HD6432351 datasheet(596/1025 Pages) RENESAS

596 / 1025 page

Section 13 Serial Communication Interface (SCI)

Rev. 3.00 Sep 15, 2006 page 562 of 988

REJ09B0330-0300

Bit 2—Transmit End (TEND): Indicates that there is no valid data in TDR when the last bit of

the transmit character is sent, and transmission has been ended.

The TEND flag is read-only and cannot be modified.

Bit 2

TEND

Description

[Clearing conditions]

• When 0 is written to TDRE after reading TDRE = 1

• When the DMAC or DTC is activated by a TXI interrupt and write data to TDR

[Setting conditions]

(Initial value)

• When the TE bit in SCR is 0

• When TDRE = 1 at transmission of the last bit of a 1-byte serial transmit character

Bit 1—Multiprocessor Bit (MPB): When reception is performed using multiprocessor format in

asynchronous mode, MPB stores the multiprocessor bit in the receive data.

MPB is a read-only bit, and cannot be modified.

Bit 1

MPB

Description

[Clearing condition]

(Initial value)*

When data with a 0 multiprocessor bit is received

[Setting condition]

When data with a 1 multiprocessor bit is received

Note:

* Retains its previous state when the RE bit in SCR is cleared to 0 with multiprocessor

format.

Bit 0—Multiprocessor Bit Transfer (MPBT): When transmission is performed using

multiprocessor format in asynchronous mode, MPBT stores the multiprocessor bit to be added to

the transmit data.

The MPBT bit setting is invalid when multiprocessor format is not used, when not transmitting,

and in clocked synchronous mode.

Bit 0

MPBT

Description

Data with a 0 multiprocessor bit is transmitted

(Initial value)

Data with a 1 multiprocessor bit is transmitted

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