Section 15 Serial Communication Interface with FIFO (SCIF)
Rev. 1.00 Mar. 12, 2008 Page 530 of 1178
REJ09B0403-0100
(3) Serial Data Reception
Figure 15.5 shows an example of the data reception flowchart.
Start reception
Read DR flag in FLSR
Read FLSR
Read FRBR
Error processing
Read FLSR
DR = 1
RXFIFOERR = 1,
BI = 1, FE = 1,
PE = 1, or OE = 1
Yes
No
No
No
No
Yes
Yes
All data read
(End of reception or reception standby)
Yes
Initialization
[1]
[2]
[3]
[4]
DR = 0
[1] Confirm that the DR flag in FLSR is 1 to ensure that
receive data is in the buffer. When the OUT2 bit in
FMCR and the ERBFI bit in FIER are set to 1, a
receive data ready interrupt occurs.
[2] Read the RXFIFOERR, BI, FE, PE, and OE flags in
FLSR to ensure that no error has occurred. If an
error has occurred, perform error processing. When
the OUT2 bit in FMCR and the ELSI bit in FIER are
set to 1, a receive line status interrupt occurs.
[3] Read the receive data in FRBR.
[4] Check the DR flag in FLSR. When the DR flag is
cleared to 0 and all data has been read, data reception
is
complete.
Figure 15.5 Example of Data Reception Flowchart
Содержание H8S Family
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Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
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Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
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Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
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