Figure 16.12 Example Of Scif Receive Operation (Example With 8-Bit Data, Parity, One Stop Bit); Figure 16.13 Example Of Operation Using Modem Control (Rts2) - Hitachi SH7751 Hardware Manual

Figure 16.12 shows an example of the operation for reception.
Start
1
bit
Serial
0 D0
data
RDF
FER
5. When modem control is enabled, the


is 0, reception is possible. When
number of data bytes equal to or greater than the


output active trigger value is specified by bits 10 to 8 in the FIFO control register
(SCFCR2), described in section 16.2.9. RTS2 also goes to 1 when bit 4 (RE) in SCSCR2 is 0.
Figure 16.13 shows an example of the operation when modem control is used.
Start
bit
Serial data
0 D0
RxD2
RTS2

Figure 16.13 Example of Operation Using Modem Control (RTS2)

Rev. 3.0, 04/02, page 674 of 1064
Data Parity Stop
bit bit
D1 D7 0/1
RXI interrupt
request
One frame
Figure 16.12 Example of SCIF Receive Operation
(Example with 8-Bit Data, Parity, One Stop Bit)


Parity
bit
D1 D2 D7 0/1 1
Start Data
bit
1 0 D0 D1
Data read and RDF flag
read as 1 then cleared to
0 by RXI interrupt handler
signal is output when SCFRDR2 is empty. When


is 1, this indicates that SCFRDR2 contains a


output active trigger set number. The
Stop
bit
Parity Stop
bit bit
D7 0/1 0
ERI interrupt request
generated by receive
error
Start
bit
0
0/1