Questions and answers

What is AXI stream used for?

What is AXI stream used for?

The AXI4-Stream protocol is used as a standard interface to connect components that wish to exchange data. The interface can be used to connect a single master, that generates data, to a single slave, that receives data. The protocol can also be used when connecting larger numbers of master and slave components.

What is AXI in Xilinx?

The AXI Interconnect IP connects one or more AXI memory-mapped Master devices to one or more memory-mapped Slave devices. The AXI Interconnect IP can be used from the Vivado® IP catalog as a pcore from the Embedded Development ToolKit (EDK) or as a standalone core from the CORE Generator™ IP catalog.

What is AXI Tkeep?

With packet based streams, TKEEP is used to indicate the start/end position of a packet in a stream (with all words in between set with TKEEP = all 1) Dec 31, 2018.

What is AXI MM?

Product Specification. Introduction. The AXI Memory Mapped to Stream Mapper IP (axi_mm2s_mapper) is used to encode and decode AXI4 Memory-Mapped (AXI4-MM) transactions into AXI4-Stream (AXI4-S) transfers, allowing AXI-MM transactions to be transported across AXI4-S networks.

What is the AXI capability of data interleaving?

By interleaving the two write data streams, the interconnect can improve system performance. Each AXI channel transfers information in only one direction, and there is no requirement for a fixed relationship between the various channels.

What is AXI register slice?

The AXI Register Slice core connects one AXI memory-mapped master to one AXI memory- mapped slave through a set of pipeline registers, typically to break a critical timing path. Several configuration options are available to best suit the nature of the pathway being pipelined.

What is AXI in FPGA?

The Advanced eXtensible Interface (AXI) is designed for FPGAs based on AMBA as a protocol for communication between blocks of IP. Here are some of the important features of an AXI interface: It supports burst transactions with only start address issued. There are different phases for the data and addresses.

What is AMBA protocol?

The Advanced Micro controller Bus Architecture (AMBA) bus protocols is a set of interconnect specifications from ARM that standardizes on chip communication mechanisms between various functional blocks (or IP) for building high performance SOC designs.

What is 4k boundary in AXI?

In reply to nup777: Addresses that are multiple of 4KB (say 4096, 4096*2, 4096*3 and so-on) are termed as 4KB address boundaries.

What is aligned data transfer in AXI?

If addresses are in units of bytes, byte addressable, then a byte is always aligned. Assuming a byte is 8 bits, then a 16 bit transfer would be aligned if it is on a 16 bit boundary, meaning the lower address bit is a zero.

What is the AMBA 4 AXI Stream Protocol?

The AMBA 4 AXI-Stream specification defines the AXI4-Stream protocol, which is designed for unidirectional data transfers from master to slave with greatly reduced signal routing.

Which is the main carrier of the AXI stream?

TDATA (main carrier of the information) is the primary payload of the AXI-Stream interface and is used to transport data from a source to a destination. In a data stream, the low order bytes of the data bus are the earlier bytes in the stream. Data byte: A data byte must be transmitted from source to destination.

What are the three types of BYTE in AXI4 stream?

The AXI4-Stream protocol defines three byte types: 1 Data byte: A data byte must be transmitted from source to destination. This is the actual data that Master needs to send to Slave. 2 Position byte: A position byte must be transmitted from source to destination. Defines the address. 3 Null byte: A null byte contains no information.

What are the features of the AXI4 interface protocol?

AXI4-Lite is a subset of the AXI4 protocol intended for communication with simpler, smaller control register-style interfaces in components. The key features of the AXI4-Lite interfaces are: All transactions have a burst length of one. All data accesses are the same size as the width of the data bus.