January 2008

v 2 . 1

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© 2008 Actel Corporation

CoreAHB2APB

Key Features

•

Supplied in SysBASIC Core Bundle

•

Bridges between Advanced Microcontroller Bus

Architecture (AMBA) Advanced High-Performance

Bus (AHB) and Advanced Peripheral Bus (APB)

•

Up to 16 APB Slave Devices Supported

•

Automatic Connection to CoreAHB and CoreAPB

in CoreConsole

Benefits

•

Allows Easy Connection of APB Devices to a

CoreMP7 or Cortex-M1 Subsystem

•

Auto Stitch in CoreConsole for Rapid Development

•

Compatible with AMBA, CoreMP7, and Cortex-M1

Supported Device Families

•Fusion

•

IGLOO™

•

IGLOOe

•ProASIC3

•ProASIC3E

Synthesis and Simulation

Support

•

Environment (IDE)

Verification and Compliance

•

Compliant with AMBA

General Description

CoreAHB2APB (AMBA Bridge) is an AHB slave that links

the AHB bus to the APB bus and acts as the Master on

the APB bus. Address decoding for the APB bus is carried

out within CoreAHB2APB, and this provides select signals

for up to 16 APB slave slots.

Read and write transfers on the AHB bus are converted

to corresponding transfers on the APB bus. High-

bandwidth peripherals, such as memory controllers, are

typically connected to the AHB, whereas the APB bus is

used for less demanding peripherals, such as watchdogs.

Unlike the AHB bus, transfers on the APB bus are not

pipelined.

Contents

General Description ................................................... 1

Connecting CoreAHB2APB in CoreConsole .............. 2

Resource Requirements ............................................. 2

Ordering Information ................................................ 2

List of Changes ........................................................... 3

Datasheet Categories ................................................. 3