ScanWorks Processor-Controlled Test

ScanWorks Processor-Controlled Test

CPU - the most powerful instrument

Put the most powerful instrument on your board – the CPU – to work performing structural and functional diagnostics, debug routines and tests all in one pass.

Embedded in that CPU on your circuit board are the instruments that are critical for overcoming today’s design challenges. Given the complexity of board designs and chips, you need access to this on-chip technology to diagnose, debug and test your designs. One of the tools that makes up the ScanWorks platform for embedded instruments is Processor-Controlled Test (PCT). It takes advantage of the CPU’s debug port for access to the circuit board so it can perform board debug, device initialization, at-speed functional test with structural diagnostics and much more. PCT is just one of several ScanWorks tools which address every stage in a product’s life cycle.

Processor-Controlled Test Development Software

With the PCT Development software, design or test engineers can debug prototypes using low-level control of the processor, as well as develop test and diagnostics tools for manufacturing and repair facilities.

  • Control the processor directly through the JTAG port or the processor's debug port, running code at full speed
  • Write and read directly to registers or memory locations of devices connected to the processor
  • Create bus tests, memory tests and I/O scripts, using a scripting language
  • Create functional tests that do not require completed BIOS and/or operating systems, which may not yet exist during prototype testing
  • For supported processors, use an automatic test generator (ATG) to detect connected devices and select appropriate test operations
  • Save tests for specific components in a library for re-use on other boards that use those components

Processor-Controlled Test Diagnostic & Repair Software

The PCT Diagnostic & Repair software enables fast isolation of faults and the identification of their causes. Failed printed circuit boards coming off a manufacturing line or faulty product returned by a customer could be routed to a technician for diagnosis, repair and retest, transforming a liability into a revenue opportunity much sooner.

  • Diagnose failures to the bus or component level
  • Control individual tests
  • Read and write to specific registers or memory locations
  • Scope level stimulus

Processor-Controlled Test Manufacturing Software

With the PCT Manufacturing software, test operators with minimal training can apply structural and functional tests to circuit boards on the assembly line. The return on investment is very fast due to the lower costs for hardware, software and labor. Re-use of tests developed during prototype stages also keeps engineering costs down.

  • Apply any test that is exported from a PCT development environment, along with some diagnostic guidance
  • Increase structural test coverage by running functional test code at full processor speed
  • Program flash devices using the speed of the processor
  • Test production boards without the need for complex and expensive fixtures
  • Re-use test and programming actions that were already developed during a product's design stage
  • Easily train new operators on the simple graphical user interface
  • Optionally run tests from a test executive, using an API

Processor-Controlled Test Embedded Diagnostics

With embedded PCT, information about difficult-to-reproduce failures in the field can be captured for analysis.

  • Embed functional-test IP in the board to store information for use in diagnosing failures that occur in the field
  • Access diagnostics remotely, using a PC interface of test executive

Hardware for ScanWorks

Hardware for ScanWorks

The ScanWorks platform for embedded instruments is supported by a wide variety of hardware controllers and accessories with which engineers can connect ScanWorks to their unit under test (UUT). Hardware is available for development, production and repair environments. The test platform required for ScanWorks is either a standard PC or a system with a built-in (embedded) JTAG controller.


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