SH7014 datasheet(353/754 Pages) RENESAS

353 / 754 page

12. Serial Communication Interface (SCI)

Rev.5.00 Sep. 27, 2007 Page 319 of 716

REJ09B0398-0500

Bit 2

⎯Transmit End (TEND): Indicates that when the last bit of a serial character was

transmitted, the TDR did not contain valid data, so transmission has ended. TEND is a read-only

bit and cannot be written.

Bit 2

TEND

Description

Transmission is in progress

[Clearing conditions]

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

• When DMAC writes data in TDR

End of transmission

(initial value)

[Setting conditions]

• Power-on reset or standby mode

• 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): Stores the value of the multiprocessor bit in receive data

when a multiprocessor format is selected for receiving in the asynchronous mode. The MPB is a

read-only bit and cannot be written.

Bit 1

MPB

Description

Multiprocessor bit value in receive data is 0*

(initial value)

Multiprocessor bit value in receive data is 1

Note:

If RE is cleared to 0 when a multiprocessor format is selected, the MPB retains its

previous value.

Bit 0

⎯Multiprocessor Bit Transfer (MPBT): Stores the value of the multiprocessor bit added to

transmit data when a multiprocessor format is selected for transmitting in the asynchronous mode.

The MPBT setting is ignored in the clock synchronous mode, when a multiprocessor format is not

selected, or when the SCI is not transmitting.

Bit 0

MPBT

Description

Multiprocessor bit value in transmit data is 0

(initial value)

Multiprocessor bit value in transmit data is 1

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