Is AXI a bus?

Is AXI a bus?

The Advanced eXtensible Interface (AXI), part of the ARM Advanced Microcontroller Bus Architecture 3 (AXI3) and 4 (AXI4) specifications, is a parallel high-performance, synchronous, high-frequency, multi-master, multi-slave communication interface, mainly designed for on-chip communication.

What is APB and AHB buses?

Advanced Peripheral Bus (APB) is designed for low bandwidth control accesses, like register interfaces on system peripherals. The Advanced High performance Bus (AHB) is also a bus protocol introduced by ARM. It has larger bus widths compared to the previous releases. AHB is capable of waits, errors and bursts.

What is AMBA AXI?

Advanced eXtensible Interface, or AXI, is part of ARM’s AMBA specifications. The AXI is a point to point interconnect that designed for high performance, high speed microcontroller systems. AXI is arguably the most popular of all AMBA interface interconnect.

What is AXI peripheral?

AXI low-latency peripheral port. The AXI low-latency peripheral port is a dedicated memory-mapped 32-bit AXI bus. It is used to access certain peripherals with a low latency and having burst support. The AXI peripheral port has optional ECC protection on data and parity on control bits.

What is the difference between AHB and axi?

AHB or AXI Bus Arbiter. RAM, SDRAM, and Bridge Slave bus ports. Result plots and window displays for statistics. The AHB Bus latencies start out lower than the AXI Bus at 16 Byte transaction size and the AHB Bus does not exceed the AXI Bus at 64 Byte transaction size.

What is the difference between AHB and APB in Amba?

Though both the AHB and the APB belong to AMBA, they differ in many ways. When talking of the difference between the two, the AHB uses a full duplex parallel communication whereas the APB uses massive memory-I/O accesses.

What is the use of AXI to APB interconnect?

The AXI interconnect helps in scaling up connectivity for number of agents compared to previous AHB/ASB bus. An AXI to APB bridge on one of the slave port is normally used to bridge communications to a set of peripherals shared on an APB bus.

How does the AHB bus compare to the other busses?

Note: the y-axis scaling differs. The system design environment was able to provide the necessary plots to compare the two busses. The latency plots show that the AHB Bus can provide comparable, or lower, latencies up to 64 Byte transaction sizes. The AHB Bus is running at twice the speed, double the width.