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AHB to APB Bridge
Design IP
Overview

SmartDV’s AHB to APB Bridge IP is a high-performance solution that enables seamless communication between the high-speed AMBA AHB bus and the low-power APB peripheral bus. It efficiently translates AHB transactions into APB-compliant accesses, making it ideal for integrating low-bandwidth peripherals such as UARTs, GPIOs, and timers into high-performance SoC designs. Commonly used in microcontroller subsystems, consumer electronics, and embedded processing units, the bridge simplifies peripheral access while maintaining system efficiency and performance.

Designed for flexibility, the IP core is highly configurable to meet specific design requirements, supporting both ASIC and FPGA implementations while optimizing for area, power, and performance.

AHB-APB Bridge
Benefits
  • AHB to APB Connectivity – Enables connection of APB2, APB3, and APB4 slaves to an AHB master, allowing seamless protocol bridging within SoC architectures
  • Support for Pipelined AHB Transfers – Accepts pipelined AHB transfers and supports single and fixed-size incrementing bursts for efficient data flow
  • Error Handling with Timeout Support – Includes data phase timeout to trigger error responses when APB slaves fail to respond, improving system robustness
  • Highly Configurable Interface
    • Customizable AHB and APB data bus widths and endianness
    • Independent configuration of APB address and data widths
    • Supports up to 16 APB slave connections with user-defined base address and address space per slave
    • Optional use of PSTRB signal per APB slave for precise data strobes
Compliance and Compatibility
  • Compliant with AMBA 2, AMBA 3, and AMBA 5 AHB specifications
  • Compliant with AMBA 2, AMBA 3, and AMBA 4 APB specifications
  • Compatible with all major EDA synthesis, simulation, and linting flows