Rev. 1.0, 09/02, page 412 of 568
16.3.5
SS Status Register (SSSR)
SSSR is a status flag register for interrupts.
Bit
Bit Name
Initial Value
R/W
Description
7
0
Reserved
The write value should always be 0.
6 ORER
0
R/W Overrun
Error
If the next data is received while RDRF
=
1, an
overrun error occurs, indicating abnormal
termination. SSRDR stores 1-frame receive data
before an overrun error occurs and loses data
received later. While ORER
=
1, continuous serial
reception cannot be continued. Serial
transmission cannot be continued, either.
[Setting condition]
•
When the next reception data is transferred to
SSRDR while RDRF
=
1
[Clearing condition]
•
When 0 is written to ORER after reading
ORER
=
1
5, 4
All
0
Reserved
The write value should always be 0.
3 TEND
1
R
Transmit
End
[Setting condition]
•
When the last bit of transmit data is
transmitted with TDRE
=
1
[Clearing conditions]
•
When 0 is written to the TEND bit after reading
TEND
=
1
•
When data is written to SSTDR
•
When data is transferred by the DTC
Содержание H8S/2627
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