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5.1.4 Sending I

C Messages

5.1.4.1 Master Operations

5.1.4.1.1 Specifying the Destination Address

The Destination Address is the I

C slave address of the slave device being

addressed on the bus. All slave addresses are displayed as even numbers (00...FE),

representing the 7 most significant bits of the 8-bit slave address transmitted on the

bus (aaaa aaa0).

The I

C adapter automatically supplies the 8

, least significant, Read/Write bit

when it sends the slave address across the bus. For master write operations, the

Read/Write bit is always transmitted as a logical 0 (aaaa aaa0). For master read

operations, the Read/Write bit is always transmitted as a logical 1 (aaaa aaa1).

On the main screen, use the I

C Destination Address list control to set the slave

address of the slave device you want to address on the bus.

5.1.4.1.2 Repeated Start Messages

C Bus communications support an operation called Repeated Start. In this

operation, a message is sent across the bus beginning with a Start Condition, but

without a Stop Condition at the end of the message. The next message sent across

the bus begins with a Start Condition, in this case a Repeated Start.

An I

C Bus master, that successfully sends a message on the bus, owns the bus until

that master sends a message with a terminating Stop Condition. The Repeated Start

operation allows the bus master to retain control of the bus while sending one or

more messages on the bus. This prevents other bus masters, in a multi-master

system, from accessing the bus and interfering with message sequences.

The Message Manager supports Repeated Starts with the doStop checkbox. Sending

an I

C message with doStop checked will cause the message to be terminated with a

Stop Condition. Sending an I

C message with doStop unchecked will cause the

message to end without a Stop Condition, allowing the next message to be sent with

a Repeated Start.

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Fujitsu siemens computers B15-1 User Manual (24 pages)

Brand: Fujitsu-siemens-computers | Category: Monitors | Size: 0.27 MB |

Contents

Introduction

Important notes

Cleaning

Transport

Power cable

Energy Star Guidelines

CE marking

Disposal and recycling

Connecting the monitor

Colour monitor B15-1

Ê Remove the cover (1)

Operation of the monitor

Switching the monitor on/off

Notes on power management

Changing the monitor settings

A26361-K905-Z100-2-5E19

Removing the monitor base

Technical data

Preset operating modes

Trouble shooting

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MCC MIIC-203 Guida Utente Pagina 40

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Fujitsu siemens computers B15-1 User Manual (24 pages)

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MCC MIIC-203 Guida Utente Pagina 40

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Fujitsu Siemens Computers B15-1 manuals

Fujitsu siemens computers B15-1 User Manual (24 pages)

Table of contents

More products and manuals for Monitors Fujitsu Siemens Computers