Japanese 
English
Twin Communications of America,
Inc.
I2C BUS Monitor
Compact PDA-based I2C BUS monitor.
Four AA batteries for 8 hours or more.
Graphical user interface.
Data analysis functionalities.
Twincommunicator waves using standard digital oscilloscope .
As shown above, this unit supports I2C BUS First Mode
(400kbit/s).
Twincommunicator supports 3.3V-5.0V systems.
(Photograph above shows test with 3.3V system)
The test setup above shows 2 Twincommunicators connected to a
universal board.
One Twincommunicator controls the target device, the other monitors
the target device.
The green board on the left is the Twincommunicator board.
It is shown outside its case for demonstration purposes only.
Function Selection Screen
Simply tap the appropriate button to use the corresponding function.
Communication speeds for "Twincommunicator" can be changed on the
"Settings" sreen.
If a setup is changed, it will be changed into the speed of new
communication each time.
Restarting the application after after making such a change is
unnecessary at all.
Data can be written to the designated register of an object device in master mode.
Twincommunicator also supports reading registers of a device.
On the Data Logging screen, dataflow on a bus can be
monitored.
The slave address and sub address are set up as trigger
conditions,
and the data corresponding to the specified conidtions conditions are
displayed.
The time stamp of the resolution of 1microSec is attached to received
data.
The data of NVM can be read and it can indicate by list.
The read data can be written out to an external storage device.
Moreover, the data saved at the external storage device can be
written to NVM.
A color bar signal can be outputted as a test pattern.
Twincommunicator supports NTSC and PAL video signal.
Purchase of Philips I2C components conveys a license under the
Philips' I2C patent
to use the components in the I2C system provided the system conforms
to the
I2C specifications defined by Philips.