Best-in-class Arm® AMBA® AHB Verification IP (VIP) for your IP, SoC, and system-level design testing.

Cadence provides a mature and comprehensive Verification IP (VIP) for the AHB specification which is part of the Arm® AMBA® family of protocols. Incorporating the latest protocol updates, the Cadence® Verification IP for AHB provides a complete bus functional model (BFM), integrated automatic protocol checks, and coverage model. Cadence provides an integrated solution for interconnect verification that verifies the correctness and completeness of data as it passes through the system and performance analysis that provides automated generation of testbenches. It also provides a ready-to-use Test Suite that is composed of semi-directed tests with a limited level of randomness. The VIP for AMBA AHB is it applicable to intellectual property (IP), system-on-chip (SoC), and system-level verification and is compatible with the industry-standard Universal Verification Methodology (UVM) and runs on all leading simulators.

Supported specification: AMBA AHB v2.0, AMBA 3 AHB-Lite Protocol v1.0, AMBA 5 AHB5 update, and Armv6 AMBA Extensions

AMBA AHB diagram

Product Highlights

  • Can be configured either as AHB or AHB-Lite Verification IP
  • Supports seamless integration in SystemVerilog, UVM, OVM, e, and SystemC verification environments
  • Generates all types of AHB transactions
  • Provides full control over bursts, transfers, and responses (timing, data, address, and control signals)
  • Supports full or partial randomization of data items
  • Supports error injection
  • Includes a set of callbacks which provide access at various protocol events for transaction modification, scoreboarding, and debugging
  • Includes comprehensive checking and coverage model
  • Includes embedded memory model in Subordinate models
  • Embedded memory models are settable and accessible via backdoor
  • Packet tracker for ease of debugging
  • Seamless integration with System Verification Scoreboard (SVD)

Key Features

The following table describes key features from the specifications that are implemented in the VIP:

Feature Name


Multiple Agents

  • Can support any number of agents

Data and Address Widths

  • Supports all legal data and address widths

Automatic subordinate Responses

  • Configurable option to use automatic subordinate responses

Delay Control

  • Support to set the delay between the items on the channels

Manager Signals Control

  • Support for control over the values of burst signals in the read and write address channel and over the values of transfer signals in the write data channel

Memory Monitoring

  • Memory can be set using backdoor access

Subordinate Response Control

  • Support for control over the signals in the read data channel

Subordinate Memory Emulation

  • Data consistency check for subordinates using memories

Transaction Types

  • Supports monitoring and driving of all read and write transactions

Hunalign and Hstrb

  • Support for Hunalign and Hstrb signals. To handle unaligned accesses and mixed-endian accesses, enables the use of byte lane strobes to indicate which byte lanes are active in a transfer

Subordinate Responses

  • Supports all Subordinate Responses - OKAY, ERROR, SPLIT, RETRY, and XFAIL (XFAIL is relevant only for ARMv6 AMBA Extensions)

Lite Cortex-M3

  • Support retraction as defined in the Arm Cortex® -M3 spec


  • Support for Secure Transfers, Exclusive Transfers, Extended Memory Types, Multiple Subordinate Select, User Signaling, and Single-Copy Atomicity features introduced in AMBA5 AHB

Exclusive Accesses

  • Support for exclusive access (Armv6 AMBA extension)

Level 2 Cache

  • Level 2 Cache Support (Armv6 AMBA extension)

Simulation Test Suite

Comprehensive testsuite with coverage model for simple and fast design and verification bring-up.

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