What is a streaming FIFO?
The AXI Streaming FIFO allows memory mapped access to a AXI Streaming interface. The core can be used to interface to the AXI Ethernet without the need to use DMA. The principal operation of this core allows the write or read of data packets to or from a device without any concern over the AXI Streaming interface.
What is AXI4 stream?
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.
Is AXI stream memory mapped?
The “AXI Memory Mapped to Stream Mapper” must be used in pairs. They communicate between each other with an AXI4 stream interface but the interface to other blocks is memory mapped in both ends. It is only an “extension”.
What is AXI4 Xilinx?
AMBA® AXI4 (Advanced eXtensible Interface 4) is the fourth generation of the AMBA interface specification from ARM®. Xilinx Vivado Design Suite 2014 and ISE Design Suite 14 extends the Xilinx platform design methodology with the semiconductor industry’s first AXI4 Compliant Plug-and-Play IP.
What is the difference between AXI and AXI Lite?
AXI4-Lite: A subset of AXI, lacking burst access capability. Has a simpler interface than the full AXI4 interface. AXI4-Stream: A fast unidirectional protocol for transfering data from master to slave.
What is burst in AXI?
An AXI ‘burst’ is a transaction in which multiple data items are transferred based upon a single address, and it is each data item transferred that is referred to as a ‘beat’.
What is APB arm?
The Advanced Peripheral Bus (APB) is part of the Advanced Microcontroller Bus Architecture (AMBA) protocol family. It defines a low-cost interface that is optimized for minimal power consumption and reduced interface complexity.
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.
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 write strobe in AXI?
The AXI write strobe signal is used to indicate which bytes of the write data bus are valid for each transfer of data. By using them you can perform sparse data transfers. For example; when performing a write transaction on a 32 bit data bus, you will have a WSTRB signal that’s 4 bits wide.
What is the burst length of AXI4?
1 to 256 transfers
AXI3 supports burst lengths of 1 to 16 transfers, for all burst types. AXI4 extends burst length support for the INCR burst type to 1 to 256 transfers. Support for all other burst types in AXI4 remains at 1 to 16 transfers.
What is AHB and APB?
AHB stands for Advanced High-performance Bus and APB sands for Advanced Peripheral Bus. Both the Advanced High-performance Bus and the Advanced Peripheral Bus are part of the Advanced Microprocessor Bus Architecture (AMBA).
What is the latest version of AXI4-Stream FIFO?
AXI4-Stream FIFO v4.2 56 PG080 October 30, 2019 www.xilinx.com Appendix D:Additional Resources and Legal Notices 04/01/2015 4.1 • Updated the read interrupt status register (ISR) value in the Programming Sequence for TX and RX in Cut-Through Mode Table.
How do I manage the AXI4-Stream interfaces?
You can easily manage the AXI4-Stream interfaces as they are transparent. The source code for the driver is included with the Vitis Unified Software Platform installation, as well as being available in the Xilinx Github repository. /data/embedded/XilinxProcessorIPLib/drivers/llfifo
What happens if the AXI4-Stream becomes unresponsive during a transaction?
AXI4-Stream FIFO v4.2 25 PG080 October 30, 2019 www.xilinx.com Chapter 2:Product Specification Because of this mode of operation, it is possible that if the AXI4-Stream becomes unresponsive during an AXI4-Stream transaction, a reset will never occur.
Where are the RDR values stored in AXI4-Stream?
The RDR val ues are stored in the receive data FIFO by the AXI4-Stream FIFO core with the data of each pa cket. The RDR value for the subsequent packet to be processed is moved to the RDR when the previous RDR value has been read. X-Ref Target – Figure 2-16