Renesas Asynchronous SH7145F Uživatelský manuál stáhnout pdf

APPLICATION NOTE

REJ06B0352-0100O/Rev.1.00 March 2004 Page 1 of 16

SH7145F

Synchronous Serial Data Transmission

Summary

The SH7144 series is a single-chip microprocessor based on the SH-2 RISC (Reduced Instruction

Set Computer) CPU core and integrating a number of peripheral functions.

This application note describes synchronous serial data transmission using the SCI (Serial

Communication Interface) module of the SH7145F. It is intended to be used as reference by users

designing software applications.

The program examples contained in this application note have been tested. However, operation

should be confirmed before using them in an actual application.

Device for Which Operation Has Been Confirmed

SH7145F

Contents

1. Specifications................................................................................................ 2

2. Functions Used............................................................................................. 3

3. Operation....................................................................................................... 6

4. Software........................................................................................................ 7

5. Flowcharts..................................................................................................... 10

6. Program Listing............................................................................................. 13

1 2 3 4 5 6 ... 15 16

Shrnutí obsahu

Strany 1 - APPLICATION NOTE

APPLICATION NOTEREJ06B0352-0100O/Rev.1.00 March 2004 Page 1 of 16SH7145FSynchronous Serial Data TransmissionSummaryThe SH7144 series is a single-chip

Strany 2 - 1. Specifications

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 10 of 165. Flowcharts(1) Main Routinemain()init_sci()trans_sci()t

Strany 3 - 2. Functions Used

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 11 of 16(2) SCI1 Initialize RoutineNoYesCancel SCI0 module standb

Strany 4

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 12 of 16(3) Data Transmit RoutineNoYesWrite transmit data to TDR_

Strany 5 - Table 1 Function Allocations

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 13 of 166. Program Listing/**************************************

Strany 6 - 3. Operation

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 14 of 16while(1); /* LOOP */}/***********************************

Strany 7 - 4. Software

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 15 of 16/**************************************Interrupt handling

Strany 8

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 16 of 161. These materials are intended as a reference to assist

Strany 9

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 2 of 161. SpecificationsAs shown in figure 1, synchronous serial

Strany 10 - 5. Flowcharts

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 3 of 162. Functions UsedIn this task example the SCI (Serial Comm

Strany 11 - (2) SCI1 Initialize Routine

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 4 of 16• Receive Shift Register (RSR_0)This register is used to r

Strany 12 - (3) Data Transmit Routine

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 5 of 16Table 1 shows the function allocations for the task exampl

Strany 13 - 6. Program Listing

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 6 of 163. OperationFigure 3 shows the operation of synchronous mo

Strany 14

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 7 of 164. Software(1) Module DescriptionsTable 3 lists the module

Strany 15

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 8 of 16Table 5 On-Chip Register DescriptionsRegisterBitSet Value

Strany 16

SH7145FSynchronous Serial Data TransmissionREJ06B0352-0100O/Rev.1.00 March 2004 Page 9 of 16RegisterBitSet Value FunctionSMR_0 MP 0 Multiprocessor mod