National Instruments 370551A-01 用户手册
Chapter 1
Introduction and Quick Start
© National Instruments Corporation
1-13
Table 1-6. VME-MXI-2 Hardware Default Settings
Hardware Component
Default Setting
A16 Base Address (U20)
Hex C040
VME-MXI-2 Intermodule
Signaling (W2)
Signaling (W2)
No user-defined pin selected
MXIbus Termination
(U21 switches 3 and 4)
(U21 switches 3 and 4)
Automatic MXIbus termination:
switch 3 OFF; switch 4 ignored.
switch 3 OFF; switch 4 ignored.
Configuration EEPROM
(U21 switches 1 and 2)
(U21 switches 1 and 2)
User-modifiable; factory settings
protected: both switches OFF.
protected: both switches OFF.
DRAM SIMMs Installed
Per customer order
SIMM Size Configuration (S2)
OFF if SIMMS are 4 M
× 32 or
larger; ON if smaller than 4 M
× 32.
Table 1-7. VXI/VME-MXI-2 Configuration Editor Default Settings
Editor Field
Default Setting
Logical Address
1 (set by hardware switch)
LA Selection
Set by hardware switch
Address Space
A24*
Requested Memory
16 KB*
A16 Write Posting
Disabled
A24/A32 Write Posting
Disabled
Interlocked Mode
Disabled
VXI/VME System Controller
Auto
VXI/VME Bus Timeout Value
125
µs
VXI/VME Auto Retry
Disabled
VXI/VME Transfer Limit
256
VXI/VME Arbiter Type
Priority
VXI/VME Request Level
3
VXI/VME Fair Request
Enabled