SH7727 Datasheet, PDF (671/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 19 Serial Communication Interface with FIFO (SCIF)
1
Serial
data
Start
bit
0 D0
Parity Stop Start
Data bit bit bit
D1 D7 0/1 1 0 D0
Parity Stop
Data bit bit
1
D1 D7 0/1 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 19.10 Example of SCIF Receive Operation
(Example with 8-Bit Data, Parity, One Stop Bit)
5. When modem control is enabled, the RTS signal is output when SCFRDR2 is empty. When
RTS is 0, reception is possible. When RTS is 1, this indicates that SCFRDR2 is full and
reception is not possible.
Figure 19.11 shows an example of the operation when modem control is used.
Serial
data
RXD
Start
bit
0 D0 D1 D2
Parity bit
D7 0/1 1
Start
0
RTS
Figure 19.11 Example of Operation Using Modem Control (RTS)
Rev. 5.00 Dec 12, 2005 page 599 of 1034
REJ09B0254-0500