HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 402
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HD64F7050
Manufacturer Part Number
HD64F7050
Description
32-Bit RISC Microcomputer SuperH RISC engine Family/
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD64F7050.pdf
(841 pages)
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Section 13 Serial Communication Interface (SCI)
Bit 5—Overrun Error (ORER): Indicates that data reception ended abnormally due to an
overrun error.
Bit 5: ORER
0
1
Bit 4—Framing Error (FER): Indicates that data reception ended abnormally due to a framing
error in the asynchronous mode.
Bit 4: FER
0
1
Rev. 5.00 Jan 06, 2006 page 382 of 818
REJ09B0273-0500
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 ORER bit, which retains its
previous value.
ORER is cleared to 0 when the chip is power-on reset or enters standby mode or
software reads ORER after it has been set to 1, then writes 0 in ORER
A receive overrun error occurred. RDR continues to hold the data received
before the overrun error, so subsequent receive data is lost. Serial receiving
cannot continue while ORER is set to 1. In the clock synchronous mode, serial
transmitting is disabled.
ORER is set to 1 if reception of the next serial data ends when RDRF is set to 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 FER bit, which retains its
previous value.
FER is cleared to 0 when the chip is power-on reset or enters standby mode or
software reads FER after it has been set to 1, then writes 0 in FER
A receive framing error occurred. When the stop bit length is two bits, only the
first bit is checked to see if it is a 1. The second stop bit is not checked. When a
framing error occurs, the SCI transfers the receive data into the RDR 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.
FER is set to 1 if the stop bit at the end of receive data is checked and found to
be 0
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