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VXI-MXI User Manual vi © National Instruments Corporation
Chapter 4
Register Descriptions
......................................................................................................... 4-1
Register Maps ................................................................................................................ 4-1
Register Sizes..................................................................................................... 4-1
Register Description Format .............................................................................. 4-1
Hard and Soft Reset ........................................................................................... 4-1
VXIbus Configuration Registers.................................................................................... 4-4
VXIbus ID Register ........................................................................................... 4-4
Device Type Register......................................................................................... 4-6
VXIbus Status/Control Register......................................................................... 4-7
VXIbus Extender Registers............................................................................................ 4-9
MODID Register................................................................................................ 4-9
Logical Address Window Register .................................................................... 4-10
A16 Window Map Register ............................................................................... 4-14
A24 Window Map Register ............................................................................... 4-18
A32 Window Map Register ............................................................................... 4-22
INTX Interrupt Configuration Register ............................................................. 4-26
INTX Trigger Configuration Register ............................................................... 4-27
INTX Utility Configuration Register................................................................. 4-28
Subclass Register ............................................................................................... 4-30
MXIbus Defined Registers............................................................................................. 4-31
MXIbus Status/Control Register........................................................................ 4-31
MXIbus Lock Register....................................................................................... 4-36
MXIbus IRQ Configuration Register................................................................. 4-37
Drive Triggers/Read LA Register ...................................................................... 4-39
Trigger Mode Selection Register ....................................................................... 4-41
Interrupt Status/Control Register ....................................................................... 4-45
Status/ID Register .............................................................................................. 4-48
MXIbus Trigger Configuration Register............................................................ 4-49
Trigger Synchronous Acknowledge Register .................................................... 4-50
Trigger Asynchronous Acknowledge Register .................................................. 4-50
IRQ Acknowledge Registers.............................................................................. 4-51
Chapter 5
Programming Considerations
........................................................................................ 5-1
System Configuration .................................................................................................... 5-1
Planning a VXIbus/MXIbus System Logical Address Map .............................. 5-1
Base/Size Configuration Format............................................................ 5-3
High/Low Configuration Format ........................................................... 5-5
Steps to Follow When Planning a System Logical Address Map.......... 5-5
Worksheets for Planning Your VXIbus/MXIbus Logical Address Map........... 5-13
Alternative Worksheets for Planning Your VXIbus/MXIbus Logical
Address Map ...................................................................................................... 5-18
Planning a VXIbus/MXIbus System A16 Address Map ................................... 5-21
Worksheets for Planning Your VXIbus/MXIbus A16 Address Map ................ 5-29
Multiframe RM Operation ............................................................................................. 5-35
Configuring the Logical Address Window ........................................................ 5-35
Configuring the Logical Address Window Example............................. 5-36
Configuring the A24 and A32 Addressing Windows ........................................ 5-38
System Administration and Initiation ................................................................ 5-39