What is difference between AXI4 and AXI4-Lite?

What is difference between AXI4 and AXI4-Lite?

AXI4: A high performance memory mapped data and address interface. Capable of Burst access to memory mapped devices. AXI4-Lite: A subset of AXI, lacking burst access capability.

What is AXI4-Lite?

AXI4-Lite is a subset of the AXI4 protocol, providing a register-like structure with reduced features and complexity. Notable differences are: all bursts are composed by 1 beat only. all data accesses use the full data bus width, which can be either 32 or 64 bits.

What is AXI4 protocol?

The AXI4 protocol is an update to AXI3 which is designed to enhance the performance and utilization of the interconnect when used by multiple masters. It includes the following enhancements: Support for burst lengths up to 256 beats. Quality of Service signaling.

What is QoS in AXI4?

The AMBA 4 AXI protocol brings in quality of service (QoS) signaling on the AXI bus to address the challenges imposed by bandwidth and latency requirements of various IP in a SoC.

What is the difference between AXI and AXI4?

1. AXI3 supports burst lengths up to 16 beats only. While AXI4 supports burst lengths of up to 256 beats. 4.

What is AXI and APB?

The AXI (Advanced eXtensible Interface) to APB (Advanced Peripheral Bus) Bridge translates AXI4-Lite transactions into APB transactions. It functions as a slave on the AXI4-Lite interface and as a master on the APB interface. The AXI to APB Bridge main use model is to connect the APB slaves with AXI masters.

Where is AXI4 protocol used?

The protocol used by many SoC today is AXI, or Advanced eXtensible Interface, and is part of the ARM Advanced Microcontroller Bus Architecture (AMBA) specification. It is especially prevalent in Xilinx’s Zynq devices, providing the interface between the processing system and programmable logic sections of the chip.

What is the difference between AXI3 and AXI4?

AXI3 supports burst lengths up to 16 beats only. While AXI4 supports burst lengths of up to 256 beats.

What is AXI ID width?

The slave ID width is equal to the master ID width plus the LOG2 of the number masters ports of the interconnect. The AXI protocol requires this width in order to allow correct routing of the response back to the master.

What is difference between AXI3 and AXI4?

What is difference between AHB and APB?

KEY DIFFERENCES : 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. The APB is simpler than the AHB. Unlike the AHB, there is no pipelining in APB.

What is the difference between APB AHB and AXI?

In AHB, each of the bus masters will connect to a single-channel shared bus. On the other hand, the bus master in AXI will connect to a Read data channel, Read address channel, Write data channel, Write address channel and Write response channel.