MCC IPort MIIC-201D/U User manual

User’s Guide
DLL/USB
I2C Host Adapter
with iPort Utility Pack Software
www.mcc-us.com

Introduction
The MCC iPort™ DLL/USB to I2C Host Adapter (#MIIC-201D/U) allows any
Windows 98se, 2000, XP, or higher PC, with a free USB port or self-powered USB
hub, to become an I2C Master or Slave device, transmitting or receiving I2C
messages between the PC and one or more I2C devices across an I2C Bus.
This user’s guide describes the installation and operation of the iPort DLL/USB I2C
Bus host adapter and the iPort Utility Pack Software for Windows.
Are you new to I2C? Want to know more? We suggest you review “What is I2C?” at
www.mcc-us.com/I2CBusTechnicalOverview.pdf.
MCC products use Philips components and are licensed to use the I²C Bus.
“Purchase of Philips I²C components conveys a license under the Philips’ I²C patent
to use the components of the I²C system, provided the system conforms to the I²C
specifications defined by Philips.”
I²C is a trademark of Philips Corporation.
09-JAN-07

Copyright© 2006 by Micro Computer Control Corporation. All rights are reserved.
No part of this publication may be reproduced by any means without the prior
written permission of Micro Computer Control Corporation, PO Box 275,
Hopewell, New Jersey 08525 USA.
DISCLAIMER: Micro Computer Control Corporation makes no representations or
warranties with respect to the contents hereof and specifically disclaims any implied
warranties of merchantability or fitness for any particular purpose. Further, Micro
Computer Control Corporation reserves the right to revise the product described in
this publication and to make changes from time to time in the content hereof
without the obligation to notify any person of such revisions or changes.
WARNING - Life Support Applications: MCC products are not designed for use
in life support appliances, devices, or systems where the malfunction of the product
can reasonably be expected to result in a personal injury.
WARNING - Radio Frequency Emissions: This equipment can radiate levels of
radio frequency energy that may cause interference to communications equipment.
Operation of this equipment may cause interference with radio, television, or other
communications equipment. The user is responsible for correcting such interference
at the expense of the user.
WARNING - Electrostatic Discharge (ESD) Precautions: Any damage caused by
Electrostatic Discharge (ESD) through inadequate earth grounding is NOT covered
under the warranty of this product. See the “Electrostatic (ESD) Precautions”
section of this guide for more information.
Printed in the United States of America

Table of Contents
Part 1 - iPort DLL/USB I2C Bus Host Adapter ..........................1
1 Overview .......................................................2
iPort DLL/USB I2CBusHostAdapter ................................2
iPortDLL/USBVirtualCommunicationsPort(VCP) ....................2
iPort Utility Pack Software .........................................3
iPort Software Development Kit for Windows ..........................3
PackingSlip.....................................................3
SystemRequirements .............................................3
2 Interconnects ....................................................3
USBConnector ..................................................4
VirtualCommunicationsPort(VCP) ...............................4
+5VDCPowerJack ...............................................4
I2C Interface Connector ............................................4
3 HardwareConfiguration ...........................................6
Pull-upResistors .................................................6
Connectingtoa3.3VoltTargetSystem ...............................6
ConnectingtoanSMBusTargetSystem...............................6
4 ESD (Electrostatic Discharge) Precautions .............................7
Host Computer Grounding .........................................7
Grounding Solutions ..............................................8
5 HardwareSet-Up.................................................8
Part 2 - iPort Utility Pack for Windows ...............................11
1 iPort Utility Pack for Windows .....................................13
iPortMessageCenter.............................................13
iPortMessageManager ...........................................14
2 SystemRequirements ............................................15
3 iPort Utility Pack Installation ......................................15
InstallingfromCD...............................................15
InstallingfromtheWeb...........................................15

4 iPortMessageCenter ............................................16
MessageCenterOperations........................................17
StartingtheMessageCenter .....................................17
SelectingtheAdapter ..........................................17
SelecttheCommunicationsPort ..................................18
OptionsMenu ................................................18
EstablishAdapterCommunicationsLink ...........................18
Entering or Editing I2CMessages .................................18
Set I2CAddress ...............................................19
SetMessageRead/WriteDirection ................................19
SpecifyRepeatedStartMessages .................................19
SetTimeDelay ...............................................20
Specify Write Data or Read Byte Count ............................20
InsertingandDeletingMessages..................................21
SavingorLoadingMessageLists .................................21
SendtheMessageList..........................................21
SpecialEventHandling.........................................21
Slave Not Acknowledging ......................................22
CommandLineArguments ........................................23
SetAdapterType..............................................24
Set RS-232 Communication Port .................................24
Set RS-232 Baud Rate ..........................................24
Set I2CBusClockRate .........................................24
Enable/INTSignalMonitor .....................................25
StopOnBusy ................................................25
StopOnArbitrationLoss .......................................25
Stop On Slave Negative Acknowledgment ..........................25
BeepOnBusy ................................................25
BeepOnArbitrationLoss .......................................26
Beep On Slave Negative Acknowledgment .........................26
BeepOn/INTAssert...........................................26
Load I2CMessageListFile......................................26
Saved I2CMessageListFile .....................................27
AutoOpen...................................................27
AutoSend ...................................................27
AutoExit....................................................27
5 iPort MessageManager ..........................................28
MessageManagerOperations ......................................29
StartingtheMessageManager ...................................29

SelecttheAdapter .............................................29
EstablishAdapterCommunicationsLink ...........................30
BasicSetup ..................................................30
AdvancedSetup ..............................................31
Adapter’s Own I2CSlaveAddress ..............................31
GeneralCallEnable .........................................31
I2CBusMasterBitRate ......................................31
I2CBusTime-Out...........................................31
EnableINTSignalMonitor ...................................31
Diagnostic Setup ..............................................32
LogFileLevel .............................................32
LogFileName .............................................32
LogFileSize...............................................32
Sending I2CMessages..........................................33
MasterOperations.............................................33
SpecifyingtheDestinationAddress ...............................33
RepeatedStartMessages........................................33
AutoRepeat..................................................34
Master Transmitting Data .......................................34
SpecifyingMasterTxMessageBytes ...........................34
Sending Master Transmit Messages .............................35
Master Receive Data ...........................................35
SpecifyingDatatoRead......................................35
Negative Acknowledge Last Byte ..............................36
Master Transmit and Receive ....................................36
SlaveOperations ..............................................36
Slave Transmit Data ...........................................36
Slave Receive Data ............................................36
6 Uninstalling Software Components ..................................37
Uninstalling iPort Utility Pack for Windows ...........................37
UninstallingiPortDLL/USBVCPDeviceDriver.......................37
iPort DLL/USB Revision Report ....................................39
Additional Information ............................................39
Appendix A - I2C Connector Information .............................40

1
Part 1 - iPort DLL/USB I2C Bus Host Adapter
Part 1
DLL/USB
I2C Bus Host Adapter
User’s Guide
Model: MIIC-201D/U

2
1 Overview
The MCC iPort DLL/USB I2C Bus Host Adapter (#MIIC-201D/U) allows any
Windows 98se, 2000, XP, or higher PC with a free USB port or self-powered USB
hub, to become an I2C Master or Slave device, transmitting or receiving I2C
messages between the PC and one or more I2C devices across an I2C Bus.
iPort DLL/USB Product Features:
• Compatible with existing iPort (#MIIC-201) applications.Upgrade existing iPort
applications from RS-232 to USB. No software changes required.
• Windows DLL Application Program Interface (API).
• Compatible with Windows 98se, 2000, XP, or higher based PC.
• Compatible with USB 2.0 Specifications.
• Supports I2C Bus Master and Slave, Transmit and Receive operations.
• User Selectable Master I2C bit rates of 12.5 KHz and 100 KHz.
• Compatible with 3.3V to 5V I2C Bus voltages.
• Includes switch-enabled internal I2C Pull-Up resistors.
• Includes our free I2C Message Center and Message Manager Windows
Applications. Get on the I2C Bus in Seconds.
• Includes our easy to use Virtual Communications Port (VCP) driver.
The I2C adapter system consists of the following components:
1.1 iPort DLL/USB I2C Bus Host Adapter
The iPort DLL/USB adapter is a bus-powered USB device that plugs into a host
computer’s USB port or self-powered USB hub and generates I2C Bus signals.
1.2 iPort DLL/USB Virtual Communications Port (VCP)
The iPort DLL/USB Virtual Communications Port (VCP) driver creates a virtual
serial port within the iPort DLL/USB device. To a Windows software application,
the VCP looks just like a legacy serial communications port, allowing standard
iPort DLL programming methods to work unchanged. No special USB
programming is required. The iPort DLL/USB VCP is available to the host
computer whenever the iPort DLL/USB is attached to the host computer.

3
1.3 iPort Utility Pack Software
This free software package includes the iPort Message Center and Message
Manager applications to help you easily send and receive I2C Bus messages.
1.4 iPort Software Development Kit for Windows
This optional software package includes:
• iPort DLL (Dynamic Linked Library) for Windows
• Programmer’s Guide
• Sample Application Programs
This iPort Software Development Kit for Windows is only needed if you are
developing a custom Windows software application for the iPort DLL/USB. Find
additional sample programs and complete projects on our web site’s Sample
Program page.
1.5 Packing Slip
This package includes the following items:
• iPort DLL/USB I2C Bus Host Adapter (#MIIC-201D/U).
• USB Interface Cable.
•I
2C Clip-Lead Cable.
•I
2C Interface Cable.
• iPort DLL/USB User’s Guide (this document).
• iPort Utility Pack for Windows CD.
• Global Power Supply (Optional supplement power for target system).
1.6 System Requirements
a. A host computer with one free USB port or self-powered USB hub.
b. Windows 98se, 2000, XP or higher.
2 Interconnects
The iPort DLL/USB includes three interconnections:

4
2.1 USB Connector
The USB connector provides connection from the I2C adapter to a USB port on the
host computer or self-powered USB hub. The iPort DLL/USB operates as a
bus-powered USB device, with limited target system power. Additional target
system power can be provided via an included external power supply.
2.1.1 Virtual Communications Port (VCP)
The iPort DLL/USB provides a Virtual Communications Port (VCP) interface via a
host computer driver. Application programs running on the host computer
communicate with the iPort DLL/USB via the standard iPort DLL.
2.2 +5VDC Power Jack
The iPort DLL/USB is a bus-powered USB device. When deriving power from the
Universal Serial Bus only, a limited amount of power is available to a target system
via +5V wire in the I2C Interface Connector. Additional power for a target system
can be provided via the +5VDC Power Jack. When connected to the +5VDC Power
Jack, an external power supply will remove all target system power load from the
USB and replace it with power from the external power supply. See the “Hardware
Setup” section for additional details.
2.3 I2C Interface Connector
The I2C adapter includes a four wire, positive locking, modular receptacle connector
(see Appendix A) for interfacing to an external I2C Bus. Lines provided include I2C
Clock (SCL), I2C Data (SDA), Ground, and +5V.
Minimum wiring for I2C communications include I2C Clock, Data, and Ground.