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BusPro-I™ Bus Analyzer, Monitor, Debugger and
Programmer
The BusPro-I has all the power,
flexibility, and features you need to monitor and debug the I2C
bus circuitry on your board. The BusPro-I can be used to
monitor and log I2C bus traffic in real-time, generate I2C
transactions to communicate with peripheral components on the
bus, and in-system program I2C compatible EEPROMs.
Because of its rich feature set,
reliability, portability, and ease-of-use, the BusPro-I can be
used in a wide variety of applications, such as product
development, prototype validation, troubleshooting, system
integration, production, and field testing. The Windows®
XP/Vista I2C Exerciser host software included with the BusPro-I provides a user-friendly GUI control and visibility of the
BusPro-I, including set-up, options, and traffic visibility
screens.
 
BusPro-I Features
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Supports I2C and SMBus
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Supports Standard-mode, Fast-mode, and Fast-mode Plus (Fm+)
with I2C bit rates up to 5 Mbit/sec
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Supports High-speed mode (Hs-mode) monitoring up to 5 Mbit/sec
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Passive traffic monitoring with unlimited state and timing
recording
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Time stamping, message filtering, and symbolic translation
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Automatic detection of bus voltage and signal thresholds
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Two general purpose I/O channels
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Programmable trigger event to highlight bus transactions of
interest
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Programmable bus voltage reference and pull-up resistors on
the SDA and SCL lines
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In-System Programming of I2C Serial EEPROMs
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Robust and portable design ideal for both lab and field work
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High-speed USB 2.0 interface
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Easily connects to PCs and workstations via high-speed USB
2.0 interface; no external power supply required
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32-Bit Windows application with an intuitive interface
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Special
Introductory Pricing now available!
Software
Major Functions of BusPro-I
I2C Monitor: Passively listens and records all I2C bus
traffic while displaying real-time data in both state and
waveform timing windows. By using the computer hard drive for
trace storage, the BusPro-I has virtually unlimited trace data
recording capability. message filtering, symbolic translation,
and event triggering are all included. During capture, bus
signal validation and protocol conformance are continually
evaluated with deviations flagged. An example screenshot of the
monitor window is shown below.
BusPro-I Bus Monitor Window
(click for a full size view)
I2C Debugger: A user interactive bus I/O access
portal. The debugger enables individual bus transfers
for immediate target communications. Looping supports
repeated I/O patterns to facilitate external signal
observations. Besides generic writing and reading of
data blocks, a growing library of standard devices is
included showing interactive screens tailored to the
device's organization (such as ADCs, DACs, flash
memories, SMBus behavior, etc.). An example screenshot
of the debugger window is shown below.
BusPro-I Debugger Window
I2C Programmer: Provides easy-to-use high-speed
in-system programming of I2C-compatible serial EEPROMs.
Two example screenshots of the programmer windows are
shown below.
BusPro-I Programmer Window
BusPro-I Programmer Read Device Contents Window
Hardware
At the core of the BusPro-I is an on-board engine whose logic performs the low
level interaction with the I2C bus. This element
receives set-up, direction, and drive data from the host
via a USB 2.0 port. Conversely, as bus activity is
detected and characterized, its transitional information
is conveyed up to the host for further processing.
Test Discrete I/O Signals Two
programmable lines can be operated under PC host software
control. They are available to stimulate the target system or
sense target conditions in coordination with the testing. Each
line is programmable as input, output, or output open-drain. One
of these outputs can be used as a dedicated trigger to
synchronize with external laboratory equipment. A second
discrete I/O can be used as an input trigger.
Adjustable Voltage Levels
The voltage levels of the discrete I/O and trigger lines are
programmable from 1.25V to 3.3V in increments of 50mV. The I2C
bus reference voltage can be programmed as target driven through
its bus pull-ups or driven from the BusPro-I analyzer. This
target reference voltage can also be measured. When the BusPro-I is programmed to source this reference level, the voltage
can be set with 100mV resolution over the range of 0.8V to 5V.
When the BusPro-I reference voltage drives the bus, one of a
set of pull-up resistors can be selected. The resistor values
span the range from 250 to 50K ohms. Additionally, individual
threshold levels can be adjusted for sensing high and low
conditions on the bus. This supports I2C bus hysteresis
requirements.
BusPro-I Hardware Configuration Window
* Note: The I2C bus is also often referred to as IIC bus,
Philips I2C bus, Inter-IC bus, 2-wire bus, 2-wire serial bus,
two-wire bus, or SMBus.
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BusPro-I Case Study
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This BusPro-I
Whitepaper provides an overview and case study of how the
BusPro-I can debug an I2C interface, quickly identifying the
issue and ultimately allowing it to be fixed. |
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CAS-1000-I2C/E
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While the BusPro-I is aimed at board level debugging, the more
advanced CAS-1000-I2C/E hardware is intended primarily for I2C
designers and test engineers who need to measure and validate
parameters on the I2C
bus. This hardware provides significantly enhanced functionality
such as master and slave emulation, bus parametric testing,
glitch injection, clock stretching, and timing skew.
Click here
for more information on the
CAS-1000-I2C/E. Visit our
I2C Bus Analyzer page for a
summary of the BusPro-I and CAS-1000-I2C/E
products. |
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Testimonials
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