MLX LIN MASTER

MLX LIN MASTER Datasheet

Part	Datasheet
MLX LIN MASTER	MLX LIN MASTER (pdf)

Related Parts	Information
MASTER-INTERFACE CABLE	MASTER-INTERFACE CABLE

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Melexis USB LIN master Version Melexis USB LIN Master Documentation For Melexis USB LIN master used in demo setups and development kits Page 1 of 13 Application note Oct/06 Melexis USB LIN master Version Table of Contents General description 3 Hardware 3 Installation of the LIN master 4 Installing the USB 4 Installing the LIN master application software 6 LIN commander 7 Lin Schedules and LIN Sequences 9 Log window 9 Start working with the LIN commander 9 Reprogramming of Melexis modules using the LIN Master 10 Appendix A Possible LIN 11 References 13 Disclaimer 13 Page 2 of 13 Application note Oct/06 Melexis USB LIN master Version The Melexis USB LIN master can be used for all applications requiring a LIN master. It is designed to support the automatic configuration algorithms as they are defined by the LIN consortium. The Melexis Lin master is fully configurable by software through the USB port and supports all practical baud rates on the LIN bus. Hardware The LIN master consists of a microcontroller connected to the TH8061 physical layer interface of Melexis. It can be connected to the PC using the USB port. The LIN bus and power supply can be connected through connectors at one side of the device. There are 5 control LEDs: PC connected indicates that the PC is connected and the USB link is active. PC communication indicates that there is communication between the PC and the master. M2S indicates that a message with data field send by the master is travelling over the bus. S2M indicates that a message with data field send by a slave is travelling over the bus. Vbus indicates that the LIN bus is powered and that messages can be send. The internal microcontroller and LEDs are powered by the USB bus. When the USB plug is connected, communication with the microcontroller over the USB line is possible. The LIN bus itself is not powered by the USB interface. Therefore an extra power supply has to be foreseen. The LIN bus voltage will be 1 diode voltage lower than the external power supply. As soon as the power supply is above 8V, the green LED will be on. When the LIN voltage is lower than 7V, the internal microcontroller will still send the requested LIN message to the physical layer. Because of the fact that the physical layer is not powered according to the LIN specifications, the signals on the LIN bus will not be valid. But the fact that the LIN voltage is out of spec does not block the functionality of the master. Even when the LIN voltage is out of spec, the microcontroller drives the physical interface of the LIN bus. After connecting the USB cable, the microcontroller is powered. All 5 LEDs will be on for approximately 10 seconds. After those 10 seconds, some of the LEDs will flash and only the PC connected LED will be on. If the external power is connected, the green Vbus LED will be on too. From now on, all LEDs will react on PC and LIN messages. Pinout of the different connectors - Red banana connector = battery voltage 12V typical. - Black banana connector = ground - Yellow banana connector = LIN bus Software This chapter describes the necessary steps to install the device drivers and all the software necessary to communicate with the LIN master. All software is written for Windows XP Pro. It might be possible that is it working under other versions of windows, but this cannot be guaranteed. Page 3 of 13 Application note Oct/06 Melexis USB LIN master Version Installation of the LIN master This chapter describes the necessary installations to do to be able to work with the LIN master. Note that both software and device drivers installations are required in order to work with the device and must be done before the first time you connect the LIN Master to the PC. Also, to be able to successfully accomplish these installations you need administrative rights on the PC. Installing the USB driver Insert the CD into your PC An autorun popup screen will appear Click on the “Install USB driver” button to start the installation A welcome window will appear. Click “Next” button to continue You’ll see a window with the license agreement and a few installation windows popping up. Accept the license and ignore all the windows. Page 4 of 13 Application note Oct/06 Melexis USB LIN master Version

PDF Datasheet Preview

Melexis USB LIN master

Version

Melexis USB LIN Master

Documentation

For Melexis USB LIN master used in demo setups and development kits

Page 1 of 13

Application note Oct/06

Melexis USB LIN master

Version

Table of Contents

General description 3 Hardware 3

Installation of the LIN master 4 Installing the USB 4 Installing the LIN master application software 6

LIN commander 7 Lin Schedules and LIN Sequences 9 Log window 9 Start working with the LIN commander 9 Reprogramming of Melexis modules using the LIN Master 10

Appendix A Possible LIN 11 References 13 Disclaimer 13

Page 2 of 13

Application note Oct/06

Melexis USB LIN master

Version

The Melexis USB LIN master can be used for all applications requiring a LIN master. It is designed to support the automatic configuration algorithms as they are defined by the LIN consortium. The Melexis Lin master is fully configurable by software through the USB port and supports all practical baud rates on the LIN bus.

Hardware

The LIN master consists of a microcontroller connected to the TH8061 physical layer interface of Melexis. It can be connected to the PC using the USB port. The LIN bus and power supply can be connected through connectors at one side of the device. There are 5 control LEDs:

PC connected indicates that the PC is connected and the USB link is active. PC communication indicates that there is communication between the PC and the master. M2S indicates that a message with data field send by the master is travelling over the bus. S2M indicates that a message with data field send by a slave is travelling over the bus. Vbus indicates that the LIN bus is powered and that messages can be send.

The internal microcontroller and LEDs are powered by the USB bus. When the USB plug is connected, communication with the microcontroller over the USB line is possible. The LIN bus itself is not powered by the USB interface. Therefore an extra power supply has to be foreseen. The LIN bus voltage will be 1 diode voltage lower than the external power supply. As soon as the power supply is above 8V, the green LED will be on. When the LIN voltage is lower than 7V, the internal microcontroller will still send the requested LIN message to the physical layer. Because of the fact that the physical layer is not powered according to the LIN specifications, the signals on the LIN bus will not be valid. But the fact that the LIN voltage is out of spec does not block the functionality of the master. Even when the LIN voltage is out of spec, the microcontroller drives the physical interface of the LIN bus.

After connecting the USB cable, the microcontroller is powered. All 5 LEDs will be on for approximately 10 seconds. After those 10 seconds, some of the LEDs will flash and only the PC connected LED will be on. If the external power is connected, the green Vbus LED will be on too. From now on, all LEDs will react on PC and LIN messages.

Pinout of the different connectors - Red banana connector = battery voltage 12V typical. - Black banana connector = ground - Yellow banana connector = LIN bus

Software

This chapter describes the necessary steps to install the device drivers and all the software necessary to communicate with the LIN master. All software is written for Windows XP Pro. It might be possible that is it working under other versions of windows, but this cannot be guaranteed.

Page 3 of 13

Application note Oct/06

Melexis USB LIN master

Version

Installation of the LIN master

This chapter describes the necessary installations to do to be able to work with the LIN master. Note that both software and device drivers installations are required in order to work with the device and must be done before the first time you connect the LIN Master to the PC. Also, to be able to successfully accomplish these installations you need administrative rights on the PC.

Installing the USB driver

Insert the CD into your PC An autorun popup screen will appear

Click on the “Install USB driver” button to start the installation A welcome window will appear. Click “Next” button to continue

You’ll see a window with the license agreement and a few installation windows popping up. Accept the license and ignore all the windows.

Page 4 of 13

Application note Oct/06

Melexis USB LIN master

Version

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MLXLINMASTER Datasheet file may be downloaded here without warranties.

Datasheet ID: MLXLINMASTER 647786