iPort/AFM I2C Host Adapter

RS-232 to I²C Host Adapter
with ASCII Fast Mode Interface

MIIC-203

iPort/AFMTM

iPort/AFM brings I²C directly to any computer with a legacy or add-on RS-232 serial port. Just plug an iPort/AFM into your computer's serial port, load our free software, and you will be sending and receiving I²C Bus messages at up to 400Kbit/s in seconds.

(Limited Availability - CALL, Replacement See iPort/AFM 2 #MIIC-213)

Which I²C Adapter is right for me.

PRODUCT HIGHLIGHTS

Turn ANY Computer's legacy or add-on RS-232 Serial Port into an I²C Bus Port.
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.
Selectable 19,200, 57,600, and 115,200 RS-232 Baud 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.
Compatible with existing iPort/AI applications.
eXtended Commands support 2-Wire, "I²C-Like", and low level signaling.

Download PDF (400KB)

The iPort/AFM is our fastest and most powerful I²C Bus host adapter. Its RS-232 serial port interface and simple ASCII commands allows the iPort/AFM to operate with any operating system, and its compatible with most embedded systems. Applications include product development and testing, EEPROM loading, 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/AFM, our third generation adapter for the I²C Bus, addresses these issues by supporting several bus speeds, including fast mode (400kbit/s), and three RS-232 transfer rates up to 115.2K baud. 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.

The iPort/AFM will work with any application written for our iPort/AI, only 4 to 40X faster. When operating with new applications written specifically for the iPort/AFM, speed increases up to 100X faster are possible.

Master and Slave, Transmit and Receive, iPort/AFM 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 serial port.

iPort/AFM 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/AFM Reset This command resets the iPort/AFM to its default state.
//[CR]	Status Display Display iPort/AFM status information.
/B[0\|1\|2][CR]	RS-232 Baud Rate Control (iPort/AFM Enhanced Feature) Set the RS-232 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]	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/AFM 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/AFM’s Own I2C Slave Address Sets iPort/AFM's own I²C Slave Address. iPort/AFM will respond to I²C Bus messages sent to this address.
/K[0\|1\|2\|3][CR]	I²C Bus Clock Rate Control (iPort/AFM Enhanced Feature) Set I²C Bus Clock Rate Control (0=23, 1=86, 2=100, 3=400 KHz)
/M[CR]	Command Menu Display Display iPort/AFM's Command Menu
/N[0\|1\|A\|R][CR]	iNterrupt Signal Monitor/Control Status (iPort/AFM Enhanced Feature) Sets Monitor/Control/Status /INT Line. [0=Disable, 1=Enable, A=Assert, R=Release, [CR] = Status]
/O[CR]	Open I²C Connection Activates iPort/AFM 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 (iPort/AFM Enhanced Feature) Set the I²C Bus Time-oUt in msec (0=Disable)
/V[CR]	Display Firmware Version (iPort/AFM Enhanced Feature) (Major XX.XX Minor) (NEW for Version 2.0 or later)
/X[CR]	eXtended Commands (iPort/AFM Enhanced Feature) Direct control of I²C Clock (SCL) and Data (SDA) lines. See User's Guide for details. (NEW for Version 2.0 or later)
/Y[CR]	Display Tx bYte Count (iPort/AFM Enhanced Feature) How many bytes did slave acknowledge? (NEW for Version 2.0 or later)

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/AFM I²C Bus Host Adapter (#MIIC-203)
Global Power Supply (100-240V, 50-60Hz) (#MWT-5VAG)
DB-9 Serial Port Adapter Cable (#C9F25M1)
I²C Interface Cable, 4 Ft. (iPort I²C Connector Information) (#CAB4)
/INT-Trigger Cable, 1Ft. (#AXM-12G)
iPort I²C Utility Pack for Windows (iPort Utility Pack)
User's Guide ( MIIC-203-UG.pdf )
FREE Technical Support (Contact)

Optional Add-On Parts

I²C Bus ESD and Over-current Protection Device. (#IPROTX)
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