IP Module - CoreABC
CoreABC is a simple, low gate count controller for Advanced Microcontroller Bus Architecture (AMBA®) advanced peripheral bus (APB) based designs. In particular, it is targeted to control CoreAI and CorePWM in mixed-signal applications, but it can be used to control any APB or APB3 bus IP core. CoreABC supports a comprehensive assembler-based configurable instruction set architecture and extensive and flexible configuration of size and feature options allowing it to be tuned to meet the resource constraints and processing power requirements of a wide variety of applications. The instructions executed are either held in a small internal ROM constructed from logic tiles ("hard" configuration), stored in RAM blocks internal to CoreABC ("soft" configuration), or in Fusion or SmartFusion devices, in on-chip nonvolatile memory ("NVM" configuration). The core is easy to configure and program offering efficient local control for use in real-time applications in Actel FPGAs.

The core consists of six main blocks:
- Instruction block
- Sequencer
- ALU and flags
- Storage
- ACM
- APB controller
- AMBA3 APB master interface controller
Key Features:
- Deterministic operation
- Very fast real-time I/O response
- Hard, soft or NVM program code storage
- Low-cost control implementation
- Can be used in devices without on-chip memory
- Highly configurable
- 8-, 16- or 32-bit APB interface
- Easy to implement and program
- Supports Actel's IGLOO/e, IGLOO PLUS, ProASIC3/E, ProASIC3L, SmartFusion, Fusion, Axcelerator, RTAX-S, and ProASICPLUS families
- See the handbook for device utilization and performance details