H8SSLASH2224 datasheet(650/1071 Pages) RENESAS

650 / 1071 page

Section 15 Serial Communication Interface (SCI)

Rev. 5.00 Aug 08, 2006 page 564 of 982

REJ09B0054-0500

Bit

Bit Name

Initial

Value

R/W

Description

ORER

R/(W)*

Overrun Error

Indicates that an overrun error occurred during

reception, causing abnormal termination.

[Setting condition]

When the next serial reception is completed while

RDRF = 1

The receive data prior to the overrun error is

retained in RDR, and the data received

subsequently is lost. Also, subsequent serial

reception cannot be continued while the ORER flag

is set to 1. In clocked synchronous mode, serial

transmission cannot be continued either.

[Clearing condition]

When 0 is written to ORER after reading ORER =

The ORER flag is not affected and retains its

previous state when the RE bit in SCR is cleared to

4FER

R/(W)*

Framing Error

Indicates that a framing error occurred during

reception in asynchronous mode, causing

abnormal termination.

[Setting condition]

When the stop bit is 0

In 2 stop bit mode, only the first stop bit is checked

for a value to 1; the second stop bit is not checked.

If a framing error occurs, the receive data is

transferred to RDR but the RDRF flag is not set.

Also, subsequent serial reception cannot be

continued while the FER flag is set to 1. In clocked

synchronous mode, serial transmission cannot be

continued, either.

[Clearing condition]

When 0 is written to FER after reading FER = 1

In 2-stop-bit mode, only the first stop bit is

checked.

The FER flag is not affected and retains its

previous state when the RE bit in SCR is cleared to

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