For designing AMBA APB protocol for read and write operation, we are using Moore finite state machine (FSM). To design FSM, we need a way to express the FSM in Verilog:

The APB protocol is a low-cost interface, optimized for minimal power consumption and reduced interface complexity. The APB interface is not pipelined and is a simple, synchronous protocol.

下面讲一下设计重点： 一定要做好功课在开始coding。 Flow control，APB的上级模块，需要给到流控信号，告知APB master什么时候开始传输，什么时候结束。 FSM，必须完全遵循AMBA的datasheet。 时序对齐，和FSM一样，接口时序要和APB协议对齐。

The Advanced Peripheral Bus (APB) is part of the Advanced Microcontroller Bus Architecture (AMBA) protocol family. It defines a low-cost interface that is optimized for minimal power consumption and reduced interface complexity.

2019年12月27日 · APB可以与AMBA高级高性能总线 (AHB-Lite) 和AMBA 高级可扩展接口 (AXI)连接； APB主要用于低带宽的周边外设之间的连接，例如UART、1284等，它的总线架构不像AHB支持多个主模块，在APB里面唯一的主模块就是APB 桥。

The goal of this work is to synthesize and simulate complex interface bridge between Advanced High performance Bus (AHB) and Advanced Peripheral Bus (APB) known as AHB2APB Bridge. To achieve high performance proposed architecture is FSM …

2024年11月12日 · AMBA总线是用于连接微控制器和外围设备的 总线协议，由ARM公司提出的一种片上系统SoC互联标准。 本篇博客主要介绍 APB3协议； 在这里实现一个apb_master的代码示例： [47:32]:paddr , [31:0]:pwdata. parameter RD_FLAG = 8'b0 , parameter WR_FLAG = 8'b1 , parameter CMD_RW_WIDTH = 8 , parameter CMD_ADDR_WIDTH = 16 , parameter CMD_DATA_WIDTH = 32 ,

APB is low bandwidth and low performance bus. So, the components requiring lower bandwidth like the peripheral devices such as UART, Keypad, Timer and PIO (Peripheral Input Output) …

Verification of APB protocol is achieved by using System Verilog based UVM with EDA playground simulation tool. The Advanced Peripheral Bus (APB) is part of the Advanced Microcontroller Bus Architecture (AMBA) protocol family.

2024年6月5日 · Relying upon the AHB inputs, the fsm is utilized to regulate the functionality of APB transfers. The state representation is presented in Fig. 9, how the conditional apparatus functions, with its present configuration and the AHB slave interface serving as its controllers.