SH7713 Datasheet, PDF (611/904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 16 Serial Communication Interface with FIFO (SCIF)
1
Serial
data
Start
bit
0 D0
Data
Parity Stop Start
bit bit bit
D1
D7 0/1 1 0 D0
Data
Parity Stop
bit bit
D1
D7 0/1 1
1
Idle state
(mark state)
RDF
FER
RXI interrupt
request
One frame
Data read and RDF flag
read as 1 then cleared
to 0 by RXI interrupt
handler
ERI interrupt request
generated by receive
error
Figure 16.8 Example of SCIF Receive Operation
(Example of 8-Bit Data with Parity and 1 Stop Bit)
Modem Function: When using a modem function, transmission can be stopped and started again
according to the CTS input value. When the CTS is set to 1 during transmission, the data enters a
mark state after transmitting one frame. When CTS is set to 0, the next transmit data is output
starting with a start bit.
Transmit data
TxD
CTS
Start
bit
0 D0 D1
Parity Stop
bit bit
D6 D7 0/1
Transmission stops
when CTS goes high
Start
bit
0 D0 D1
D6 D7 0/1
Transmission starts again
when CTS goes low
Figure 16.9 CTS Control Operation
Rev.1.50 Aug. 30, 2006 Page 571 of 860
REJ09B0288-0150