一般SoC都是通过它们的寄存器进行访问。 下面是一个APB slave 的verilog实例,大家可以在此基础上,设计自己APB slave接口的自定义模块控制器. // Sample APB register code // Standard read/write registers // Adress offset from psel: // 0x00 : 32 bit read of status32 port // 0x04 : 32 bit read...
从图中可发现除了PWRITE信号是倒过来有效外,APB 读操作时序图和APB写操作时序图非常相似,在这里不再作详细的解释。 要特别注意的是,在 T3 后,也就是在进入ACESS周期后,APB Slave必须要将 Master 所要读取的数据准备好,以便 Master 可以在 ACESS 周期末被 T4 正时钟沿触发时正确的将数据读取。
在APB总线系统中,只有一个master,其他都是slave 特点: APB可以工作在高频率下: 协议简单: 无复杂的时序 同步总线 总线上所有的transaction都依赖于时钟上升沿 一主多从: 在APB总线中,只有一个主机,其他都是从机。一般情况下,APB挂在AHB总线系统下,通过AHB-APB Bridge将事务在AHB apb协议的一些特点 APB主要...
AHB2APB Bridge规格说明 Bridge是APB总线上唯一的主机(也可以通过设计使APB支持多个Master) AHB2APB Bridge接口 Bridge是连接AHB总线和APB总线的桥梁,所以接口有AHB总线和APB总线 Bridge是APB总线的Master,是AHA的Slave psel - 有多少个外设就有多少个psel信号 penable - 时钟选通信号 AHB2APB Bridge状态机 Bridge...
一、简介 APB主要用来连接高性能低带宽的外围设备,在APB总线系统中,只有一个master,其他的都是slave。 特点: ① 可工作在高频下; ② 协议简单:无复杂的时序; ③ 同步总线:总线上所有的transaction(读写操作)都依赖于时钟的上升沿; ④ 一主多从:一般情况下,APB挂在AHB总线系统下,通过AHB-APB Br... ...
APB master and slave developed in System Verilog. Source codes included apb_master : APB master apb_slave0.sv: APB slave with zero wait states apb_slave.sv : APB slave with one wait state tb.sv : Testbench Comments All source codes are fully synthesizable and tested. All source codes are...
5、AHB_to_APB Bridge的Verilog实现 //---// File : ahb_to_apb.v// Author : TG// Key Words :// Modification History :// Date By Version Change Description// 2022-04-27 TG 1.0 original/// Editor : VSCode, Tab Size(4)// Description : Simple AHB to APB bridge.// The bridge requ...
Verilog prajwalgekkouga/AHB-to-APB-Bridge Star58 Code Issues Pull requests The AHB to APB bridge is an AHB slave and the only APB master which provides an interface between the highspeed AHB and the low-power APB. Read and write transfers on the AHB are converted into equivalent transfers ...
APB I2C Master/Slave Controller Overview The I2C Interface provides full support for the two-wire I2C synchronous serial interface, compatible with the ACCESS. Bus physical layer, with additional support for the SMBus protocol, including Packet Error Checking (PEC). Through its I2C compatibility, ...
I2C Master & Slave Single/Dual/Quad/Octal SPI Master & Slave 16550-compatible UART 32GPIOs Real-Time Clock Watchdog Timer Generic Timer Programmable Interrupt Controller Other peripherals with a 32-bit APB interface can be connected to the subsystem, via a configurable number of extra 32-bit AP...