iPort/USB I2C Host Adapter

USB to I²C Host Adapter
with ASCII Fast Mode Interface

MIIC-204G

iPort/USB^TM

iPort/USB brings I²C directly to your PC. Just load our free software, plug the iPort/USB into your computer's USB port, and you will be sending and receiving I²C messages in seconds.

(Limited Availability - CALL, Replacement See iPort/USB 2 #MIIC-208)

USB-Implementers Forum (USB-IF) Certified
Microsoft Windows Hardware Quality Lab (WHQL) Certified

Which I²C Adapter is right for me.

PRODUCT HIGHLIGHTS

Add I²C to Your Windows, Linux, or Mac OSX PC.
Supports 7-bit addressing Standard (100k) and Fast (400k) Mode I²C Bus Activity.
High Performance I²C Bus Co-Processor.
Increased I²C Bus Throughput with Low Overhead.
Selectable 23KHz, 86KHz, 100KHz, and 400KHz I²C Bus Clock Rates.
Supports Bus Master and Slave, Transmit and Receive, and /INT Signaling.
Supports Multi-Master systems with Arbitration Loss Detection.
Compatible with 3-5V I²C, or 1.5-5V with our iVoLT Voltage Level Translator.
Switch controlled I²C Bus Pull-Ups.
Simple ASCII Text Ccommand Interface.
Download our free iPort Utility Pack.
Download our free iBurner EEPROM Programming Software.
Download our free Microsoft .NET Class Library.
Download our free iPortAI LabVIEW VI Library.
Download our free Message Center for Linux software.
Use our free Sample Programs and Development Tools to build custom I²C applications.
USB Bus Powered.
Virtual Com Port based driver eliminates USB complications.
Built-in ESD and Auto-Resetable Fuse Protection.
USB-IF and WHQL Certified, CE Marked.
Compatible with existing iPort/AI and iPort/AFM applications.
eXtended Commands support 2-Wire, "I²C-Like", and low level signaling.

Download PDF (400KB)

The iPort/USB is our fastest and most powerful I²C Bus host adapter. USB-IF and Microsoft WHQL Certified, the iPort/USB will operate with any Windows Vista, or XP PC. Typical applications include product development and testing, EEPROM programming, device control and sensor networking.

Over the past few years, the I²C Bus has expanded from simple control to data intensive applications. As new uses arise, bus bandwidth and message overhead have become key issues in product design and testing. The iPort/USB, our fourth generation adapter for the I²C Bus, addresses these issues by supporting several I²C bus speeds, including fast mode (400kbit/s), and USB transfer rates up to 12 Mb/s. Implemented using a high-performance bus co-processor with optimized instruction set, the adapter also includes large message buffers (256 bytes) to reduce host computer and bus overhead. In addition to operating as a bus master or slave in a multi-master system, a built-in bi-directional /INT signal line allows the device to receive or generate "slave only" device notifications.

Thanks to its USB-based Virtual Communications Port (VCP) driver, the iPort/USB will work with RS-232 based applications written for our iPort/AFM or iPort/AI I²C host adapters. When operating with new application software that uses advanced features, speed increases up to 100X faster are possible.

Master and Slave, Transmit and Receive, iPort/USB supports I²C message modes including Multi-Master, Arbitration Loss Detection, with messages from 1 to 32K bytes in length.

Start sending I²C messages in minutes using our Message Manager or Message Center applications included with each adapter. You can also use your computer's terminal emulation software (like Windows' Hyperterminal Program), or create your own custom I²C applications using any programming tool that can access your computer's (virtual) serial port.

iPort/USB ASCII Text Interface Commands
Command	Description
	Note: [CR] = Carriage Return Code or Enter Key. Syntax: [Select], (Optional), xx = [00..FE], n = [1..32767]
Ctrl/R,Ctrl/R,Ctrl/R	iPort/USB Reset This command resets the iPort/USB to its default state.
//[CR]	Status Display Display iPort/USB status information.
/B[0\|1\|2][CR]	Virtual Com Port Baud Rate Control Set the Virtual Com Port Baud Rate (0=19.2, 1=57.6, 2=115.2k)
/C[CR]	Close I²C Connection Disconnect from the I²C Bus.
/Dxx[CR]	Set Destination I²C Slave Address Set the destination I²C Slave Address for subsequent Master Transmit or Receive operations.
/E[0\|1][CR]	Echo/Prompt Control [0 = Disable, 1 = Enable] Enable/Disable data entry echo and prompts.
/F[0\|1][CR]	Virtual Com Port Flow Control [0 = XON/XOFF, 1 = RTS/CTS] Select serial communication handshaking protocol.
/G[0\|1][CR]	I²C General Call Control [0 = Disabled, 1 = Enabled] Enables/Disables iPort/USB response to I²C Bus General Call (00) messages.
/H[0\|1][CR]	Hex Only Display Control [0 = Disabled, 1 = Enabled] Controls display format of received message data.
/Ixx[CR]	Set iPort/USB’s Own I²C Slave Address Sets iPort/USB's own I²C Slave Address. iPort/USB will respond to I²C Bus messages sent to this address.
/K[0\|1\|2\|3][CR]	I²C Bus Clock Rate Control Set I²C Bus Clock Rate Control (0=23, 1=86, 2=100, 3=400 KHz)
/M[CR]	Command Menu Display Display iPort/USB's Command Menu
/N[0\|1\|A\|R][CR]	iNterrupt Signal Monitor/Control Status Sets Monitor/Control/Status /INT Line. [0=Disable, 1=Enable, A=Assert, R=Release, [CR] = Status]
/O[CR]	Open I²C Connection Activates iPort/USB as an I²C device attached to the bus.
/*Rn[CR]	Master Read Message Read the specified number of data bytes from the current Destination I²C Slave device. * = No Stop for Repeated Start
/Stext[CR]	Slave Transmit Message Write the specified data bytes to a requesting I²C Master Receiver device.
/*Ttext[CR]	Master Transmit Message Master Transmit the specified data bytes to the current Destination I²C Slave device. * = No Stop for Repeated Start
/Un[CR]	I²C Bus Time-oUt Set the I²C Bus Time-oUt in msec (0=Disable)
/V[CR]	Display iPort/USB Firmware Version (Major XX.XX Minor)
/X[CR]	eXtended Commands Direct control of I²C Clock (SCL) and Data (SDA) lines. See User's Guide for details.
/Y[CR]	Display Tx bYte Count How many bytes did slave acknowledge.

TYPICAL APPLICATIONS

Product Development: Software/Hardware Testing and Troubleshooting.
Manufacturing: Testing and Debugging, EEPROM Programming, Quality Control.
Field Service: Field diagnosis, Repair service and Verification, Product Updates.

Included Parts List:

iPort/USB I²C Bus Host Adapter (#MIIC-204)
USB Interface Cable (6 Ft.)
I²C Bus Clip Lead Cable (#CABCL)
I²C Interface Cable, 4 Ft. (iPort I²C Connector Information) (#CAB4)
/INT-Trigger Cable, 1Ft. (#AXM-12G)
Optional I²C Bus Power Supply (100-240V, 50-60Hz) (#MWT-5VAG)
iPort I²C Utility Pack for Windows (iPort Utility Pack)
User's Guide ( MIIC-204-UG.pdf )
FREE Technical Support (Contact)

Optional Add-On Parts

I²C Bus Low Voltage Level Translator. (#IVOLT)
I²C Bus Interface Cables 4, 8 Ft. (#CAB4, #CAB8)
I²C Bus Cable Entender (#CABCE)
I²C Bus Clip Lead Cable (#CABCL)
4 Channel I²C Bus Multiplexer Board (#IP-201).

Product Environmental Specifications: See Environmental Specifications FAQ

See our Online Catalog for ordering information.

I²C is just a mouse click away ^TM