
Section 10 Serial Communication Interface
Rev. 6.00 Sep 12, 2006 page 320 of 526
REJ09B0326-0600
Start receive
error processing
End of receive
error processing
4
Clear bits OER, PER,
FER to 0 in SSR
Yes
OER = 1?
Yes
Yes
FER = 1?
Break?
Yes
PER = 1?
No
No
No
No
Overrun error
processing
Framing error
processing
(A)
Parity error
processing
If a receive error has
occurred, read bits OER,
PER, and FER in SSR to
identify the error, and after
carrying out the necessary
error processing, ensure
that bits OER, PER, and
FER are all cleared to 0.
Reception cannot be
resumed if any of these
bits is set to 1. In the case
of a framing error, a break
can be detected by reading
the value of the RXD pin.
4.
Figure 10.13 Example of Data Reception Flowchart (Asynchronous Mode) (cont)
SCI3 operates as follows when receiving data.
SCI3 monitors the communication line, and when it detects a 0 start bit, performs internal
synchronization and begins reception. Reception is carried out in accordance with the relevant data
transfer format in table 10.14. The received data is first placed in RSR in LSB-to-MSB order, and
then the parity bit and stop bit(s) are received. SCI3 then carries out the following checks.
•
Parity check
SCI3 checks that the number of 1 bits in the receive data conforms to the parity (odd or even)
set in bit PM in the serial mode register (SMR).
•
Stop bit check
SCI3 checks that the stop bit is 1. If two stop bits are used, only the first is checked.
•
Status check
SCI3 checks that bit RDRF is set to 1, indicating that the receive data can be transferred from
RSR to RDR.
Содержание F-ZTAT H8/3642A Series
Страница 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Страница 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Страница 21: ...Rev 6 00 Sep 12 2006 page xix of xx Appendix E Product Code Lineup 522 Appendix F Package Dimensions 524 ...
Страница 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Страница 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Страница 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Страница 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Страница 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Страница 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Страница 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...