SH7065 Datasheet, PDF (607/941 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Transfer
direction
Serial clock
Section 14 Serial Communication Interface (SCI)
Serial data
Bit 7 Bit 0
Bit 7 Bit 0 Bit 1
Bit 6 Bit 7
RDF
ORER
RXI interrupt Data read from SCFRDR
request
and RDF flag cleared to
0 by RXI interrupt handler
RXI interrupt
request
ERI interrupt
request due to
overrun error
One frame
Figure 14.22 Example of SCI Receive Operation
Simultaneous Serial Data Transmission and Reception (Synchronous Mode): Figure 14.23
shows a sample flowchart for simultaneous serial transmit and receive operations.
Use the following procedure for simultaneous serial data transmit and receive operations after
enabling the SCI for transmission and reception.
Rev. 5.00 Sep 11, 2006 page 585 of 916
REJ09B0332-0500