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National Instruments Corporation
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Static DIO Register-Level Programmer Manual
Chapter 1
Getting to Know Your NI 6509/651
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/6520/6521/6528 Device
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/6520/6521/6528 ..................................................................1-2
Chapter 2
Register Map and Descriptions
)Data .................................................................................................2-4
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) .....................................................................................................2-5
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) .........................................................................................2-6
) ..........................................................................................2-7
)................................................................................................2-8
).....................................................................................2-9
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)........................................................................................2-10
)....................................................................................2-11
) ....................................................................................................2-12
ID Register.......................................................................................................2-13
Clear Register ..................................................................................................2-14
Change Status Register....................................................................................2-15
Master Interrupt Control Register ...................................................................2-16
Revision Register.............................................................................................2-17
Filter Interval 32-Bit Register .........................................................................2-18
Automatic Clock Selection Register (PXI-6528 Only) ...................................2-19