Programmable Interrupt Controller - i82C59A Cycle-by-Cycle Equivalent

Estimate your chip with this semiconductor IP

Digital Blocks

IP Name

DB8259A

Provider

Digital Blocks

Description

Programmable Interrupt Controller - i82C59A Cycle-by-Cycle Equivalent

Categories

IP Catalog : Digital Core IP : Controllers : Interrupt

IP Catalog : Digital Core IP : Controllers : Peripheral

IP Catalog : On-Chip Bus IP : AMBA AHB/APB

Portability

ASIC, FPGA, Structured

Process Node

all

Type

Soft IP

Maturity

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Overview

The Digital Blocks DB8259A Programmable Interrupt Controller IP core is a full function equivalent to the Intel 8259A / Intersil 82C59A / NEC uPD8259A devices.

The DB8259A RTL Verilog / VHDL outputs were compared to the Intel 8259A device on a cycle-by-cycle basis as captured & represented by the Digital Blocks testbench suite.

DB8259A Programmable Interrupt Controller manages up to eight vectored priority interrupts for a microprocessor. Using multiple instantiations of the DB8259A core and programming it to cascade mode enables up to sixty-four vectored priority interrupts. More than sixty-four vectored interrupts can be accomplished by programming the DB8259A core to Poll Command Mode. Interrupt sources may be either edge or level triggered.

Features

MCS-80/85 and 8088/8086 processor modes

Fully Nested Mode and Special Fully Nested Mode

Special Mask Mode / Buffered Mode / Poll Command Mode

Cascade Mode with Master or Slave selection

Automatic End-of-Interrupt Mode

Specific and Non-Specific End-of-Interrupt Commands

Automatic & Specific Rotation

Edge and level triggered interrupt input modes

Reading of Interrupt Request Register (IRR) and In-Service Register (ISR)

Writing and reading of Interrupt Mask Register (IMR) through data bus

Deliverables

VHDL or Verilog Source

Comprehensive testbench suite with expected results

Synthesis scripts

Installation Guide

Technical Reference Manual

Market Category

Automotive, Communications, Consumer Electronics, Data Processing, Industrial and Medical, Military/Civil Aerospace

Datasheet

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Bus Interface

We have the following processor interfaces for this IP - ISA, AMBA APB / AHB / AXI, CoreConnect, OCP, Avalon

Protocols

AMBA 4.0 AHB
AMBA 4.0 AXI
CoreConnect
ISA
OCP

Gate Count

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QIP Rating

This IP is not yet QIP rated.

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