About this book

This Technical Reference Manual is for the Cortex®‑A32 processor. It provides reference documentation and contains programming details for registers. It also describes the memory system, the caches, the interrupts, and the debug features.

Product revision status

The rmpn identifier indicates the revision status of the product described in this book, for example, r1p2, where:

rmIdentifies the major revision of the product, for example, r1.
pnIdentifies the minor revision or modification status of the product, for example, p2.

Intended audience

This manual is written for system designers, system integrators, and programmers who are designing or programming a System-on-Chip (SoC) that uses the Cortex®‑A32 processor.

Additional reading

This book contains information that is specific to this product. See the following documents for other relevant information.

ARM publications
  • ARM® AMBA® AXI and ACE Protocol Specification AXI, AXI4, and AXI4-Lite, ACE and ACE-Lite (ARM IHI 0022).
  • ARM® AMBA® APB Protocol Specification (ARM IHI 0024).
  • ARM® AMBA® ATB Protocol Specification (ARM IHI 0032).
  • ARM® Low Power Interface Specification Q-Channel and P-Channel Interfaces (ARM IHI 0068).
  • ARM® Architecture Reference Manual ARMv8, for ARMv8-A architecture profile (ARM DDI 0487).
  • ARM® Generic Interrupt Controller Architecture Specification (ARM IHI 0069).
  • ARM® Embedded Trace Macrocell Architecture Specification ETMv4 (ARM IHI 0064).
  • ARM® CoreSight™ Architecture Specification (ARM IHI 0029).
  • ARM® Cortex-A Series Programmer’s Guide for ARMv8-A (ARM DEN 0024).

The following confidential books are only available to licensees:

  • ARM® Cortex®‑A32 Configuration and Sign-off Guide (ARM 100244).
  • ARM® Cortex®‑A32 Processor Integration Manual (ARM 100245).
  • ARM® Cortex®‑A32 Processor Cryptographic Extension Technical Reference Manual (ARM 100242).
  • ARM® Cortex®‑A32 Processor Advanced SIMD and Floating-point Support Technical Reference Manual (ARM 100243).
  • ARM® AMBA® 5 CHI Protocol Specification (ARM IHI 0050).
  • ARM® ARMv8 AArch32 UNPREDICTABLE behaviors (PRD03-GENC-010544).
Other publications
This section lists relevant documents published by third parties:
  • ANSI/IEEE Std 754-2008, IEEE Standard for Binary Floating-Point Arithmetic.


ARM floating-point terminology is largely based on the earlier ANSI/IEEE Std 754-1985 issue of the standard. See the ARM® Architecture Reference Manual ARMv8, for ARMv8-A architecture profile for more information.
Non-ConfidentialPDF file icon PDF versionARM 100241_0001_00_en
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