首先分析AXI Master的工作机制 握手机制 CMD和Data的流程图: 写操作流程:write transaction flow read操作的流程图:read command timing diagram 此处应该是有错误,既然是读操作,信号名字应该为:araddr arlen... bready data flow
In the previous AXI article, a number of AXI signals were associated with each of the five channels. To understand how an interconnect handles these signals, a closer look at a simple AXI transaction is needed. Read Transactions Figure 2 shows a timing diagram of a read transaction ...
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write operation timing diagram. Read : read operation timing diagram. AXI slave design using verilog RTL axi_slave.v: AXI slave interface design file Read channel ARADDR: Specifies the address for a read transaction. ARLEN: Indicates the number of data transfers within a read burst. ...
forthereadaddressgroupofsignals.Thedefault valueis0. bam_axi_mm_araddr[n:0]OutputReadaddress.Thereadaddressgivestheaddress ofthefirsttransferinareadbursttransaction. RefertotheBAMaddressmappingfortheactual addresswidth. bam_axi_mm_arlen[7:0]OutputBurstlength.Theburstlengthgivestheexact numberoftransfersin...
AXIaddressreadID.Identificationtagforthe s_axi_aridS_AXI Ireadaddressgroupofsignals.Onlygenerated [c_s_axi_id_width-1:0](AR) whentheIDwidthissetgreaterthan0. AXIreadaddress.Theaddressprovidesthe initialaddressofthereadbursttransaction. s_axi_araddrS_AXIOnlythestartaddressoftheburstisprovided ...
Transaction Return Item Policy Implementation Items Returned During Reset Write CMD and Data Flow Diagram Write Transaction Flow Read Command Timing Diagram Read Transaction Flow BREADY Data Flow RREADY Data Flow AXI Slave Agent AXI Slave Read Driver AXI Slave Write Driver AXI Monitor...
of the qsys interconnect, which during the read transaction kept the rready asserted in that cycle, in which it received arready, but it was apparently not able to accept rvalid . As my slave (and bridge) produced RDATA in the same cycle, the bridge asserter...
If we drew this read transaction out into a state machine diagram, we might get something looking like Fig. 6 below. Fig 6. An Initial Read Finite State Machine In this diagram, the read channel starts in the idle state where theRin the bottom corner of theIdlebox indicates thatARREADYis...