Interrupt Lines
Agilent 34950A 64-Bit Digital I/O and Counter Module User’s Guide
19
Memory Input Operations
For memory input operations, the interrupt line is an output and is set on
a pattern match or when the memory has been filled. You can set the
interrupt line to be driven or open collector using the
SENSe:DIGital:HANDshake:DRIVe
command.
When set to
ACTive
the interrupt line will be driven by the module.
The high output voltage is set for both the handshaking and interrupt line
on a bank with the
SOURce:DIGital:HANDshake:LEVel
command.
When set to
OCOLlector
the interrupt line will be driven low, but will go
to high impedance mode when in the ‘High’ state. The open collector mode
requires external pull- ups.
The
SENSe:DIGital:INTerrupt:MODE
command sets the condition that will
cause the interrupt to be asserted. When set to
MFULl
the interrupt is
given when the memory is full. When set to
COMPare
the interrupt is
asserted when the pattern is detected (see page
page 21
). When either
condition is removed, the interrupt is de- asserted.
The interrupt line is enabled by the
SENSe:DIGital:INTerrupt:ENABle
command and the status can be checked using the SCPI Status System
(refer to the
Programmer's Reference Help file
).
N O T E
The settings for drive mode, output drive level, and input threshold also
apply to the bank’s handshake lines.
