Interrupt Controller Technical Specification

Overview

This document specifies the Interrupt Controller (RV_PLIC) functionality. This module conforms to the Comportable guideline for peripheral functionality. See that document for integration overview within the broader top level system.

Features

• RISC-V Platform-Level Interrupt Controller (PLIC) compliant interrupt controller
• Support arbitrary number of interrupt vectors (up to 255) and targets
• Support interrupt enable, interrupt status registers
• Memory-mapped MSIP register per HART for software interrupt control.

Description

The RV_PLIC module is designed to manage various interrupt sources from the peripherals. It receives interrupt events as either edge or level of the incoming interrupt signals (intr_src_i) and can notify multiple targets.

Compatibility

The RV_PLIC is compatible with any RISC-V core implementing the RISC-V privilege specification.