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APB Interrupt Controller (70123)
The interrupt controller monitors interrupts from all other modules within the system and issues interrupt requests to the processor when necessary. The interrupt controller is scalable to support from 1 to 32 interrupt sources. It also provides enable set and enable clear mechanisms to prevent dangerous read-modify-write operations. It provides active high & active low IRQ & FIQ interrupt request outputs.
Features
- Programmable Interrupt Controller
- Scalable (from 1 to 32 interrupts)
- Optional programmable interrupt
- AMBA APB interface
- Easily cascaded to support more interrupts
- Separate interrupt enable set and clear mechanisms
- FIQ and IRQ outputs
- Single bit enable and clear control
Deliverables
- Verilog Source
- Complete Test Environment
- APB Bus Functional Model
- C-Sample Code
Block Diagram of the APB Interrupt Controller (70123) IP Core
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