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6.1 Configuration of MP1777A Status Registers
Status registers excluding the registers specified by
IEEE488.2
are configured
as
follows.
Condition Transition Event Event enable
register filter register register
. .
.
.
-
Summary Message
Fig. 6-2 Block Diagram of each Status Register
Table 6-1
Definitions of Register and Filter
Register and Filter Definition
Condition register
Monitors the device status and performs real-time change in accordance with the device
Transition filter
status.
For this reason, this register does not store the status.
Sets the condition register details to the event register
The transition filter comes in three modes, depending on the changes of the condition regis-
ter to be evaluated.
Positive direction change: The event becomes true only when the corresponding condition
changes from false to true.
Negative direction change: The event becomes true only when the corresponding condition
changes from true to false
Both direction change:
The event becomes true when
a
change into the positive or
negative direction takes place.
Event register
Stores the output of the transition filter.
Event enable register
Selects the bit of
corresponding
Event Reg~ster to trigger a sh~ft of summary message to true.