SH7136_09 Datasheet, PDF (2/22 Pages) Renesas Technology Corp – SCI Clock Synchronous Simultaneous Transmit and Receive of Serial Data and DTC Data Transfer

SH7136/SH7137 Group
SCI Clock Synchronous Simultaneous Transmit and
Receive of Serial Data and DTC Data Transfer
1. Introduction
1.1 Specifications
This application note describes simultaneous clock synchronous transmit and receive of serial data by the serial
communication interface (SCI), using the data transfer functions of the data transfer controller (DTC). Figure 1 shows
the configuration.
• SCI channel 0 and the DTC are used.
• The SCI communication format is 8-bit fixed.
• The DTC is used to transfer the SCI transmit and receive data. The DTC uses two channels, one for SCI transmit
and one for SCI receive.
• The DTC is activated for transmit operation by an SCI transmit data empty interrupt request. The DTC is activated
for receive operation by an SCI receive data full interrupt request.
• The SCI transmit and receive data count is 32 bytes.
Figure 1 Example of Clock Synchronous Serial Data Transmit/Receive Using DTC
1.2 Module Used
• Data transfer controller (DTC)
• Serial communication interface (SCI) channel 0
1.3 Applicable Conditions
MCU:
SH7137
Operating frequencies: Internal clock (Iφ) = 80 MHz
Bus clock (Bφ) = 40 MHz
Peripheral clock (Pφ) = 40 MHz
MTU2 clock (MPφ) = 40 MHz
MTU2S clock (MIφ) = 80 MHz
C compiler:
Renesas Technology High-performance Embedded Workshop, Ver. 4.05.01.001, Renesas
Technology SuperH RISC engine Family C/C++ Compiler Package, Ver. 9.03, Release 00
Compile options:
High-performance Embedded Workshop default settings
REJ06B0890-0100/Rev.1.00
July 2009
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