Section 17 Serial Communication Interface with FIFO (SCIF)
Rev. 1.00 Apr. 28, 2008 Page 521 of 994
REJ09B0452-0100
(3) Data
Transmission
Figure 17.8 shows an example of the data transmission flowchart.
Read CTS flag in FMSR
Read THRE flag in FLSR
i
←
0
i
←
i + 1
Write transmit data to transmit FIFO
CTS = 1
THRE = 1
Yes
No
No
No
No
Yes
Yes
(End of transmission or transmission standby)
Yes
Transmission/reception standby
[1]
[2]
[3]
[4]
[1] Confirm that the CTS flag in FMSR is 1.
[2] Confirm that the THRE flag in FLSR is 1 to
ensure that the transmit FIFO is empty.
[3] Write up to 16 bytes of transmit data in the
transmit FIFO. If the transmit data is 17 bytes
or more, return to step [2] to write transmit
data in the transmit FIFO again.
[4] When all of the data has been written, go
to the transmission/reception standby flow.
i < 16?
All data written
Figure 17.8 Example of Data Transmission Flowchart
Содержание H8S/2100 Series
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Страница 494: ...Section 15 Serial Communication Interface SCI Rev 1 00 Apr 28 2008 Page 468 of 994 REJ09B0452 0100...
Страница 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
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