ScanWorks 3.3 Memory Access Verification
(MAV) action examines a board's netlist and, after accessing
its model library, automatically determines how the
memory chips on the printed circuit board (PCB) are
connected to adjacent boundary-scan devices. With this
information, MAV is able to automate the process of
verifying the boundary-scan access to the memory chips
on the PCB, streamlining the set-up and verification
process for memory interconnect testing. In addition,
MAV can provide diagnostics on memory devices down to
the level of an address, a data signal or, in some cases,
the control signal net.
Scripting automates test development
flow
The new scripting capability in ScanWorks
3.3 is based on familiar test control languages like
Tcl and Perl. With it, test engineers can automate many
of the steps in the test development process and optimize
test execution.
Scripting allows engineers or test
technicians to define certain tasks for ScanWorks to
perform automatically, relieving engineers from the
burden of data gathering, data preparation, data logging
for further analysis, data updates and other actions.
In addition, the ScanWorks scripting capability can
interface with other applications in the organization
so that test results can be seamlessly communicated
across the company or into another application. Follow-up
steps that depend upon test results also can be defined
and linked together with the ScanWorks scripting language.
For more information on ScanWorks'
Process Automation Scripting, click
here.
Differential signal test
The interconnect test capabilities
of ScanWorks 3.3 have been expanded to include full
testing and diagnostics on DC-coupled differential signal
pairs. Differential signals are high-speed, two-line
interconnects between chips on a printed circuit board.
In some cases, typical boundary-scan interconnect tests
could miss certain defects on a differential connection.
Now, ScanWorks' interconnect test tool is able to reliably
detect "stuck-at" faults and open circuits
on both differential signals and isolate the fault to
the signal pair. Differential signal test is another
step in ASSET's strategy to continually improve ScanWorks,
leading eventually to the ability to test AC-coupled
interconnects.
Web-based Model Library
ScanWorks 3.3 provides customers with
current maintenance contracts access to an extensive
library of models needed for boundary-scan test generation,
including BSDL files, Flash memory models, memory models,
and non-boundary-scan models. ScanWorks users can search
for and select the model of interest, review it’s
contents, and download it to their local library if
they need it. Models are provide with various levels
of validation, which is clearly indicated in the description
of the model. Model library users can add notes to describe
special characteristics of the devices modeled or they
can add new models to the library. The web-based library
is currently stocked with thousands of BSDL files and
non-boundary-scan models, and hundreds of memory and
flash models.
Availability
ScanWorks 3.3 is available now. For
more information, click
here.
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