SH7727 Datasheet, PDF (569/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 17 Serial Communication Interface (SCI)
Bit 4—Framing Error (FER): Indicates that data reception aborted due to a framing error in the
asynchronous mode.
Bit 4: FER
0
Description
Receiving is in progress or has ended normally^*1
(Initial value)
[Clear conditions]
1. When the chip is reset or enters standby mode
2. When FER=1 is read and then 0 is written to FER.
1
A receive framing error occurred
FER is set to 1 if the stop bit at the end of receive data is checked and found to
be 0.^*2
Notes: 1. Clearing the RE bit to 0 in the serial control register does not affect the FER bit, which
retains its previous value.
2. When the stop bit length is two bits, only the first bit is checked. The second stop bit is
not checked. When a framing error occurs, the SCI transfers the receive data into the
SCRDR but does not set RDRF. Serial receiving cannot continue while FER is set to 1.
In the clock synchronous mode, serial transmitting is also disabled.
Bit 3—Parity Error (PER): Indicates that data reception (with parity) aborted due to a parity
error in the asynchronous mode.
Bit 3: PER
0
Description
Receiving is in progress or has ended normally^*1
(Initial value)
[Clear conditions]
1. When the chip is reset or enters standby mode
2. When PER=1 is read and then 0 is written to PER.
1
A receive parity error occurred^*2
[Setting condition]
When 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).
Notes: 1. Clearing the RE bit to 0 in the serial control register does not affect the PER bit, which
retains its previous value.
2. When a parity error occurs, the SCI transfers the receive data into the SCRDR but does
not set RDRF. Serial receiving cannot continue while PER is set to 1. In the clock
synchronous mode, serial transmitting is also disabled.
Rev. 5.00 Dec 12, 2005 page 497 of 1034
REJ09B0254-0500