HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 493

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.6.5
Figure 13.20 shows a sample flowchart for simultaneous serial transmit and receive operations.
The following procedure should be used for simultaneous serial data transmit and receive
operations after the SCI initialization. To switch from transmit mode to simultaneous transmit and
receive mode, after checking that the SCI has finished transmission and the TDRE and TEND
flags are set to 1, clear TE to 0. Then simultaneously set TE and RE to 1 with a single instruction.
To switch from receive mode to simultaneous transmit and receive mode, after checking that the
SCI has finished reception, clear RE to 0. Then after checking that the RDRF and receive error
flags (ORER, FER, and PER) are cleared to 0, simultaneously set TE and RE to 1 with a single
instruction.
Simultaneous Serial Data Transmission and Reception (Clocked Synchronous
Mode)
13. Serial Communication Interface (SCI)
Rev.4.00 Mar. 27, 2008 Page 449 of 882
REJ09B0108-0400