What is AHB protocol?

AHB is a bus protocol introduced in Advanced Microcontroller Bus Architecture version 2 published by ARM Ltd company. In addition to previous release, it has the following features: large bus-widths (64/128/256/512/1024 bit).

How does AHB bus work?

A number of control signals are used to define the direction, width, and type of the data transfer. The AHB decoder receives the address signal from the master and decodes it into slave select signals. The slave responds to the master via an HRESP signal and the data transfer between master and slave begins.

What is APB bus used for?

APB : The Advanced Peripheral Bus (APB) is used for connecting low bandwidth peripherals. It is a simple non-pipelined protocol that can be used to communicate(read or write) from a bridge/master to a number of slaves through the shared bus.

What is AHB bus matrix?

The bus matrix module, BusMatrix , enables multiple AHB masters from different AHB buses to be connected to multiple AHB slaves on multiple AHB slave buses. It enables parallel access to a number of shared AHB slaves from a number of different AHB masters.

Is the AHB bus synchronous?

The bi-directional AHB/AHB Bridge is used to interconnect high-speed and low-speed AMBA AHB buses. The bridge supports synchronous clocks with any frequency ratio between the two interconnected buses.

What is the bandwidth of AHB?

The protocol allows for the AHB data bus to be 8, 16, 32, 64, 128, 256, 512 or 1024-bits wide. However, it is recommended that a minimum bus width of 32 bits is used and it is expected that a maximum of 256 bits will be adequate for almost all applications.

Is AHB full duplex?

AHB has full-duplex parallel communication whereas the APB has massive memory-I/O accesses. The Advanced High-performance Bus is capable of waits, errors, and bursts.

Where is ahb used?

AHB:- It is used for High-Frequency Design and it supports multiple Bus Master, Burst transfer, and pipelined operations. Common AHB Slaves are internal memory devices, external memory interface,s and high bandwidth peripherals.

What is bus wiring?

A bus wire is nothing more than a wire, or pair of wires, that carries power from the source around your layout. It can be tapped by feeder wires to connect it to the layout at any interval. These work for track, switches, accessories, etc.