SH7018 datasheet(229/431 Pages) RENESAS

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• Bit 2—Transmit End (TEND): Indicates that when the last bit of a serial character was

transmitted, the TDR1 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

TEND is cleared to 0 when software reads TDRE after it has been set to 1, then

writes 0 in TDRE.

End of transmission

(Initial value)

TEND is set to 1 when the chip is power-on reset or in standby mode, TE is

cleared to 0 in the serial control register (SCR1), or TDRE is 1 when the last bit

of a one-byte serial character is transmitted.

• Bit 1—Multiprocessor Bit (MPB): Stores the value of the multiprocessor bit in receive data

when a multiprocessor format is selected for receiving. 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)

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

its previous value.

Multiprocessor bit value in receive data is 1

• 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. The setting of the

MPBT bit is ignored in the clock synchronous mode, when the multiprocessor format is not

being used, and when transmission is not taking place.

Bit 0: MPBT

Description

Multiprocessor bit value in transmit data is 0

(Initial value)

Multiprocessor bit value in transmit data is 1

SH7018 Datasheet(PDF) 229 Page - Renesas Technology Corp