Figure 15.16 Sample Sci Transmission Operation In Clocked Synchronous Mode - Renesas H8S Series Hardware Manual

Synchronization
clock
Serial data
TDRE
TEND
TXI interrupt
request generated

Figure 15.16 Sample SCI Transmission Operation in Clocked Synchronous Mode

Transfer direction
Bit 0 Bit 1
Data written to TDR
and TDRE flag cleared
to 0 in TXI interrupt
service routine
1 frame
Section 15 Serial Communication Interface (SCI, IrDA)
Bit 7 Bit 0 Bit 1
TXI interrupt
request generated
Rev. 3.00 Jul. 14, 2005 Page 475 of 986
Bit 6 Bit 7
TEI interrupt request
generated
REJ09B0098-0300