Writing Data To Control Register; Control Register Bit Definitions - HP E1399A User Manual

Writing Data to Control Register

Control Register Bit
Definitions
Chapter 3
The breadboard module contains circuitry for a control register. You can
write to this register from the backplane over data lines D0-D15. The data is
passed to the internal data bus DB0-DB15 and then clocked into the control
register for use by the custom circuitry on the breadboard at access points
CR2-CR7.
Table 3-3 shows the definitions preassigned to control register data bits per
the VXIbus Specification (Section C.2.1.1.2).
Table 3-3. Control Register Bit Definitions
Data Bit(s) Definitions
CR0 CRESET (1=Reset the module; User defines reset actions)
CR1 SYSFAIL inhibit (1=Inhibit setting of SYSFAIL* Reset, 0=Safe)
CR2 - CR14 Device Dependent (User assignable)
CR15 (1=Enable access to A24/A32 Registers; 0=Disable)
You may connect any of the control register outputs to your custom
circuitry using the control register access points (CR0-CR15) shown in
Figure 3-3.
Figure 3-3. Control Register Access Points
Using the HP E1399A 41