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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
Advanced Topics 8-27
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Local/BP delay:
Independent
Linked
DRS
Local
14ns
16ns
BP
1ns/DRM + 21ns
Pause and Halt Capabilities
Definitions:
•
A “Halt” disables the System and Pattern Clocks at the end of the Pattern
cycle after all Phases and Windows complete their action.
•
A “Pause” disables the System and Pattern Clocks and freezes the
Phases and Windows.
•
A “Resume” generally de-asserts a Pause or Halt and allows the normal
operation to continue….but there are exceptions.
Applications:
A Halt can be used to:
o
Replicate the function of a System Clutch
o
Halt on Error
o
Halt on a pattern using a Sync pulse or external signal
o
Establish a breakpoint
o
Do single-stepping
o
Do Probe stepping
A Pause can be used to:
o
Replicate the function of a Pattern Clutch
o
Pause the data output when doing a handshake.
o
Pause on a pattern at a Phase edge or with an external signal.
o
Insert a fixed wait time.
An external Resume can be used as a handshake resume.
CPU Halt/Single-Stepping/Resume Operations:
•
Single-stepping is a Resume/Halt combination.
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CPU Halt/Single Step Test Condition Choices (static selection):
o
None