DESCRIPTION

The Bus Interrupter Module (BIM) provides an interface between interrupting devices and a system bus such as the VMEbus or VERSAbus™. It generates a maximum of 7 bus interrupts on the IRQ1-IRQ7 outputs and responds to interrupt acknowledge cycles for up to 4 independent slaves. The BIM can also supply an interrupt vector during an interrupt acknowledge cycle. Moreover, it sits in the interrupt acknowledge daisychain which allows for multiple interrupts on the level acknowledged.

FEATURES

• Programmable interrupt controller for VMEbus and VERSAbus ™ systems

• Receives and prioritizes 4 independent local interrupt sources

• 7 programmable interrupt request levels for each local interrupt source

• Separate control and vector registers for each local interrupt source

• Interrupt enable and interrupt clear bits

• Two response modes: Internal (vectored mode) or external (interrupting device-sup plies-the-vector mode)

• Interrupt acknowledge daisy chain

• Flag bits with auto-clear capability

• Pin & function compatible with Motorola MC68153

• Single 5.0 volt power supply

• Advanced CMOS low-power technology