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3.4
GUI Rail Configuration Window
Max Time for Regulation
Ramp Time registers
Out of Regulation Time
Out Of Regulation Width
registers
UV Threshold
Under Voltage Thresholds
registers
Active Low (Rail Polarity)
Enable Polarity register
OV Threshold
Over Voltage Thresholds
registers
Sequencing Conditions
Sequence Event Parameters
registers (ENABLE bits)
Sequencing Conditions
Sequence Event Data registers
(RAILDATA bits)
Sequencing Conditions
Sequence Event Link registers
(PARENTRAIL bits)
Alarm Processing
Sequence Event Data
registers (SEQPARAM bits)
Rails/GPOs to shutdown
Dependency Masks
registers (RAIL & GPO bits)
Sequence after Shutdown
Sequence Event Link
registers (RESEQ bit)
Rail Configuration Window
Sequence Event Parameters
registers (RAIL/GPO bits)
Voltage Divider
Used by GUI to calculate scale
factor for displayed Rail
Voltage & internal UV/OV trip
Log Errors to Flash
Save Rail Log registers
3.4.1
General Rail Windows Selections
GUI Overview
•
Store to Buffer and Close Buttons
—The Store to Buffer button saves the current window entries to a
GUI buffer and the Close button closes the window without saving the form entries.
The Rail Configuration window on the GUI is shown in
and permits you to configure these
UCD9080 items:
Figure 5. GUI Rail Configuration Window
•
Active Low (Polarity)
—specify enable pin polarity.
•
UV/OV Threshold
—specify undervoltage and overvoltage trip points. Note that UV values of zero
essentially cause the device to ignore any undervoltage conditions and that OV values which are
excessively high cause the device to ignore any undervoltage conditions.
•
Out of Reg Time (ms)
—specify the maximum amount of time (or glitch width) that the rail can be out
of the UV/OV range before an alarm is declared.
•
Max Time for Regulation (ms)
—specify the maximum amount of time a rail is allowed to achieve
regulation (rail voltage must be within the UV/OV range) before an alarm is declared.
•
Log Errors to Flash
—log rail errors to nonvolatile memory for later evaluation.
•
Voltage Divider
—specify the user rail voltage divider values. The GUI uses these values to properly
scale and display the voltages received through the UCD9080 monitors. Note that zero value divider
resistor values cause the divider ratio to be evaluated as unity (no scaling).
•
Sequence after Shutdown
—specify the UCD9080 ENx and GPOx output to be marked to
re-sequence the system (as defined by the current sequencer configuration) if they are specified as a
dependency in the DependencyMasks register.
UCD9080 Power Supply Sequencer and Monitor Evaluation Module
8
SLVU184A – March 2007 – Revised February 2008
