SH7729R Datasheet, PDF (532/855 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

Bit 3—Parity Error (PER): Indicates that data reception (with parity) aborted due to a parity
error in asynchronous mode.
Bit 3: PER
0
1
Description
Receiving is in progress or has ended normally
(Initial value)
Clearing the RE bit to 0 in the serial control register does not affect the PER bit,
which retains its previous value.
PER is cleared to 0 when the chip is reset or enters standby mode, or when
software reads PER after it has been set to 1, then writes 0 to PER.
A receive parity error occurred
When a parity error occurs, the SCI transfers the receive data into SCRDR but
does not set RDRF. Serial receiving cannot continue while PER is set to 1. In
synchronous mode, serial transmitting is also disabled.
PER is set to 1 if the number of 1s in receive data, including the parity bit, does
not match the even or odd parity setting of the parity mode bit (O/E) in the serial
mode register (SCSMR).
Bit 2—Transmit End (TEND): Indicates that when the last bit of a serial character was
transmitted, SCTDR did not contain valid data, so transmission has ended. TEND is a read-only
bit and cannot be written to.
Bit 2: TEND
0
1
Description
Transmission is in progress
TEND is cleared to 0 when software reads TDRE after it has been set to 1, then
writes 0 to TDRE.
End of transmission
(Initial value)
TEND is set to 1 when the chip is reset or enters standby mode, when TE is
cleared to 0 in the serial control register (SCSCR), or if 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 in asynchronous mode. MPB is a read-only
bit and cannot be written to.
Bit 1: MPB
0
1
Description
Multiprocessor bit value in receive data is 0
(Initial value)
If RE is cleared to 0 when a multiprocessor format is selected, MPB retains its
previous value.
Multiprocessor bit value in receive data is 1
Rev. 5.0, 09/03, page 486 of 806