I2C Bus/SMBus Monitor

I²C Bus/SMBus Monitor

USB Interface: Part Number #MIIC-101GU

RS-232 Interface: Part Number #MIIC-101G

The MIIC-101 Bus Monitor is a Stand-Alone or Remote Troubleshooting Tool for the I²C Bus (Inter Integrated Circuit Bus), SMBus (System Management Bus), PMBus (Power Management Bus), and other standard or customer derived protocols.

When connected to an active bus, the MIIC-101 Bus Monitor can collect, display or upload information on all bus activity.

For additional selection information, see our "Which I²C Bus Monitor is Right For Me" FAQ.

PRODUCT HIGHLIGHTS

Stand Alone or Remote I²C Bus, SMBus, PMBus, or Derived Protocol Troubleshooting Tool.
USB or RS-232 Interface Versions.
Real Time Trace to 100 kbit/s.
Supports General Calls, and Multi-Master/Multi-Slave Addressing.
Displays Start/Stop Events, Device Addresses, Read/Write Requests, Acknowledgments, and Data.
Optional I²C Analyzer Software Package.

I2C Bus/SMBus Monitor User's Guide (PDF)

KEY FEATURES

I²C Bus, SMBus, PMBus, or Derived Protocol Compatible.
Operating Modes include: Line Status, Forward/Backward Trace, View and Remote.
Monitor ALL or SELECTED Bus Address.
Stores up to 2700 messages Stand-alone. Unlimited storage in Remote Mode.
Real-Time Trace to 100Kbit/s.
Supports General Calls, and 7 bit Addressing.
Displays Start/Stop Events, Device Addresses, Read/Write Requests.
Built-in Alphanumeric Display and Keypad supports Byte, Message and Buffer Scrolling for stand-alone handheld portable operation.
Optional Windows-based I²C Analyzer Software Package lets you see message traffic on your PC's screen, provides extended message filtering, and can record messages to disk.
Powered by internal Battery, external 5v Supply, or 5v I²C Bus Power.
Compatible with 3.3v to 5v bus pull-ups.

TYPICAL APPLICATIONS

Development: Software/Hardware Troubleshooting.
Manufacturing: Testing and Debugging, Quality Control.
Field Service: Field diagnosis, Repair Service, Verification.

PRODUCT SPECIFICATIONS

I/O PORTS

I²C Bus/SMBus

A test cable provides connection to the network under test. Test clips are provided for:

SCL Clock Line
GND Ground Line
SDA Data Line
+5 External Supply

Host Computer Interface

USB (#MIIC-101GU) or RS-232 (#MIIC-101G) interface cable provides connection to PC Host system.

ADDRESS SELECTION

Bus activity can be monitored on a selective or non selective basis. Messages to all or a specified bus address can be captured in the trace buffer.

OPERATING MODES

View Status Mode

In View Status Mode, the unit displays bus line levels. Displayed information includes:

V
SCL
SDA
TRIG +5v
I2C Clock
I2C Data
Trigger

Forward Trace Mode

Forward Trace collects a trace of up to 2700 bus messages with optional Pre Trigger.

Backward Trace Mode

Backward Trace maintains a trace of up to the last 2700 bus messages with optional Post Trigger.

#MIIC-101GU or #MIIC-101G

View Mode

View Mode displays captured bus activity on the built-in display. Displayed information includes:

Start/Stop Events
Message and Byte Number
Destination Addresses
Read/Write Requests
Receiver Acknowledgments
Transmitted Data in Hex and ASCII

Both forward and reverse scrolling of captured data bytes or messages is supported.

Display syntax:

I2C Event
Start of Buffer
Start Read w/Ack
Data w/Ack
Stop Condition
End of Buffer Display
-START OF TRACE-
MMMM:START AA RA
MMMM:NNN DD 'C'A
MMMM:STOP
--END OF TRACE--

where:

MMMM
NNN
AA
DD
C
R/W
N/A Trace Message Number
Transaction Byte Number
Device Address
Data in Hexadecimal
Data in ASCII
Read/Write Request
Receiver Non/Acknowledgment

Optional Windows-based I²C Analyzer Software Package available.

POWER

Internal 9V battery (included), +5V bus power, or external power supply (included).

Included Parts List:

I²C/SMBus Monitor. (#MIIC-101).
USB (#MIIC-101/USB) or RS-232 (#MEE-PS) Interface Cable.
I²C Bus Clip Lead Cable (#CABCL)
I²C Bus Interface Cable. (#CAB4).
External Trigger Cable (#AXM-12G)
Global Power Supply (#MWT-5VAG).
User's Guide (MIIC-101-UG.PDF)
FREE Technical Support (via phone, fax, or email)

Optional Add-On Parts:

I²C/SMBus Analyzer Software (#SMB-SW).
I²C Bus ESD and Over-current Protection Device (#IPROTX)
I²C Bus Low Voltage Level Translator (#IVOLT)
I²C Bus Interface Cable (#CAB4, CAB8).

Product Environmental Specifications: See Environmental Specifications FAQ

See our Bus Monitor FAQ for answers to your technical questions, or our Online Catalog for ordering information.

I²C is just a mouse click away ^TM