Motorola MC68328 Technical Information

MC68328 Microprocessor Application: FLEX™Alphanumeric Chip MC68175 Interface for One-Way Pager by Perry Vo Freescale Semiconductor, I

1-2 FLEX Alphanumeric Chip MC68175 Interface Introduction 1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IntroductionIntroduction FLEX Alphanumeric Chip MC68175 Interface 1-3 1.1 INTRODUCTION Combined with the Dragonball™ MC68328 microprocessor, FLEX™ O

1-4 FLEX Alphanumeric Chip MC68175 Interface IntroductionMC68175 1.5 MC68175 The FLEX one-way paging protocol is implemented in the form of the Moto

SECTION 2HARDWARE DEVELOPMENT Freescale Semiconductor, I Freescale Semiconductor, Inc.For More Inf

2-2 FLEX Alphanumeric Chip MC68175 Interface Hardware Development 2.1 FLEX DEVELOPMENT KIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Hardware DevelopmentFLEX Development Kit FLEX Alphanumeric Chip MC68175 Interface 2-3 2.1 FLEX DEVELOPMENT KIT This section briefly describes the fo

2-4 FLEX Alphanumeric Chip MC68175 Interface Hardware DevelopmentFLEX Development Kit Motorola Semiconductor Products Sector has a complete FLEX one

Hardware DevelopmentFLEX Development Kit FLEX Alphanumeric Chip MC68175 Interface 2-5 2.1.3 FLEX Development/Evaluation Board Interface The FLEX Dev

2-6 FLEX Alphanumeric Chip MC68175 Interface Hardware DevelopmentFLEX Development Kit assert the READY line low until the end of the 32-bit transfer

SECTION 3SOFTWARE DEVELOPMENT Freescale Semiconductor, I Freescale Semiconductor, Inc.For More Inf

Freescale Semiconductor, I Freescale Semiconductor, Inc.For More Information On This Product

3-2 FLEX Alphanumeric Chip MC68175 Interface Software Development 3.1 FLEX SYSTEM SOFTWARE. . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Software DevelopmentFLEX System Software FLEX Alphanumeric Chip MC68175 Interface 3-3 3.1 FLEX SYSTEM SOFTWARE FLEX System Software (FSS) from Motor

3-4 FLEX Alphanumeric Chip MC68175 Interface Software DevelopmentFLEX System Software 3.1.2 SPI Communication The FLEX Alphanumeric Chip IC communic

Software DevelopmentFLEX System Software FLEX Alphanumeric Chip MC68175 Interface 3-5 Upon reset or at power-up, the entire FLEX Alphanumeric Chip I

3-6 FLEX Alphanumeric Chip MC68175 Interface Software DevelopmentFLEX System Software Figure 3-3 FLEX Alphanumeric Chip IC Checksum Flowchart Note

Software DevelopmentFLEX System Software FLEX Alphanumeric Chip MC68175 Interface 3-7 FLEX Alphanumeric Chip is still in Reset or Disable mode. In t

3-8 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentFLEX System Software3.1.5 Receiving and Processing Paging MessagesFLEX One-Way Stack c

Software DevelopmentFLEX System SoftwareFLEX Alphanumeric Chip MC68175 Interface 3-9In the second stage, the host software periodically calls the FLEX

3-10 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFigure 3-6 shows how paging messages are

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-113.2.1 Creating the SPI DriverThe SPI int

FLEX Alphanumeric Chip MC68175 Interface iii TABLE OF CONTENTS SECTION 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

3-12 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPU if (!(gFlag1 & INITCHIP)){

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-13 /* * This is when FLEXstack send

3-14 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUExample 3-3 Function storeData /******

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-15Example 3-4 Function FlexSPITransfer/*

3-16 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUExample 3-5 Function waitForTransfer()

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-173.2.2 Configuring PORT.HThe PORT.H file

3-18 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFStkNotifyNewMsg()The FStkNotifyNewMsg()

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-19Send_4_bytes() supervises the interrupt

3-20 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPU3.2.4 Setting up Initialization BufferTh

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-21/* Create FLEXstack Driver Initializatio

iv FLEX Alphanumeric Chip MC68175 Interface Freescale Semiconductor, I Freescale Semiconductor, I

3-22 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPU/* Create Message Filter Module */ptr4 =

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-23ptr5->cmds[10] = 0x15000132;/* Warm-u

3-24 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPU3.2.5 Retrieving Paging Messages from FL

Software DevelopmentPorting FLEX One-Way Stack to the MC68328 MPUFLEX Alphanumeric Chip MC68175 Interface 3-25 /* Prepare the initialization b

3-26 FLEX Alphanumeric Chip MC68175 InterfaceSoftware DevelopmentPorting FLEX One-Way Stack to the MC68328 MPU/* Read the first message specified in t

FLEX Alphanumeric Chip MC68175 Interface v LIST OF FIGURES Figure 2-1 FLEX System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vi FLEX Alphanumeric Chip MC68175 Interface Freescale Semiconductor, I Freescale Semiconductor, I

FLEX Alphanumeric Chip MC68175 Interface vii LIST OF EXAMPLES Example 3-1 Circular Queue Definition . . . . . . . . . . . . . . . . . . . . . . . .

viii FLEX Alphanumeric Chip MC68175 Interface Freescale Semiconductor, I Freescale Semiconductor,

SECTION 1INTRODUCTION Freescale Semiconductor, I Freescale Semiconductor, Inc.For More Information