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Configuring the RF Switch 15
Chapter 1
Setting the Interrupt
Request Level
Interrupts are enabled at power-up, after a SYSRESET, or after resetting the
module via the Control Register (see Appendix B). If interrupts are enabled,
the system generates an interrupt after writing to any relay control register.
The interrupt is generated approximately 13 msec after writing to the register
to indicate the end of relay closure/settling time.
As shown in Figure 1-5, the Interrupt Request Level switch selects the
priority level that will be asserted. The Interrupt Request Level switch is set
in position 1 as shipped from the factory. For most applications this priority
level should not be changed. The interrupts are disabled when set to
position 'X'. To change the setting, set the switch to the level required.
NOTE Interrupts can also be disabled using the Control Register (see Appendix
B). Also, consult your mainframe manual to make sure backplane
jumpers/switches are configured correctly.
Figure 1-5. Setting the Interrupt Request Level Switch
Interrupt request Level
Rotary Switch Location
Interrupt Request (IRQ)
Level 0 = Interrupt Disabled