External Memory Interface Handbook Volume 3: Reference Material: For UniPHY-based Device Families
5.4.3.3. AXI Interface Ports
|   Name  |  
         Direction  |  
         Description  |  
      
|---|---|---|
|   awid  |  
         Input  |  
         AXI write address channel ID bus.  |  
      
|   awaddr  |  
         Input  |  
         AXI write address channel address bus.  |  
      
|   awlen  |  
         Input  |  
         AXI write address channel length bus.  |  
      
|   awsize  |  
         Input  |  
         AXI write address channel size bus.  |  
      
|   awburst  |  
         Input  |  
         AXI write address channel burst bus.(Interface supports only INCR and WRAP burst types.)  |  
      
|   awlock  |  
         Input  |  
         AXI write address channel lock bus.(Interface does not support this feature.)  |  
      
|   awcache  |  
         Input  |  
         AXI write address channel cache bus.(Interface does not support this feature.)  |  
      
|   awprot  |  
         Input  |  
         AXI write address channel protection bus.(Interface does not support this feature.)  |  
      
|   awvalid  |  
         Input  |  
         AXI write address channel valid signal.  |  
      
|   awready  |  
         Output  |  
         AXI write address channel ready signal.  |  
      
|   wid  |  
         Input  |  
         AXI write address channel ID bus.  |  
      
|   wdata  |  
         Input  |  
         AXI write address channel data bus.  |  
      
|   wstrb  |  
         Input  |  
         AXI write data channel strobe bus.  |  
      
|   wlast  |  
         Input  |  
         AXI write data channel last burst signal.  |  
      
|   wvalid  |  
         Input  |  
         AXI write data channel valid signal.  |  
      
|   wready  |  
         Output  |  
         AXI write data channel ready signal.  |  
      
|   bid  |  
         Output  |  
         AXI write response channel ID bus.  |  
      
|   bresp  |  
         Output  |  
         AXI write response channel response bus.Response encoding information:‘b00 - OKAY‘b01 - Reserved‘b10 - Reserved‘b11 - Reserved  |  
      
|   bvalid  |  
         Output  |  
         AXI write response channel valid signal.  |  
      
|   bready  |  
         Input  |  
         AXI write response channel ready signal.Must be set to 1. Interface does not support back pressure for write response channel.  |  
      
|   arid  |  
         Input  |  
         AXI read address channel ID bus.  |  
      
|   araddr  |  
         Input  |  
         AXI read address channel address bus.  |  
      
|   arlen  |  
         Input  |  
         AXI read address channel length bus.  |  
      
|   arsize  |  
         Input  |  
         AXI read address channel size bus.  |  
      
|   arburst  |  
         Input  |  
         AXI read address channel burst bus.(Interface supports only INCR and WRAP burst types.)  |  
      
|   arlock  |  
         Input  |  
         AXI read address channel lock bus.(Interface does not support this feature.)  |  
      
|   arcache  |  
         Input  |  
         AXI read address channel cache bus.(Interface does not support this feature.)  |  
      
|   arprot  |  
         Input  |  
         AXI read address channel protection bus.(Interface does not support this feature.)  |  
      
|   arvalid  |  
         Input  |  
         AXI read address channel valid signal.  |  
      
|   arready  |  
         Output  |  
         AXI read address channel ready signal.  |  
      
|   rid  |  
         Output  |  
         AXI read data channel ID bus.  |  
      
|   rdata  |  
         Output  |  
         AXI read data channel data bus.  |  
      
|   rresp  |  
         Output  |  
         AXI read data channel response bus.Response encoding information:‘b00 - OKAY‘b01 - Reserved‘b10 - Data error‘b11 - Reserved  |  
      
|   rlast  |  
         Output  |  
         AXI read data channel last burst signal.  |  
      
|   rvalid  |  
         Output  |  
         AXI read data channel valid signal.  |  
      
|   rready  |  
         Input  |  
         AXI read data channel ready signal.Must be set to 1. Interface does not support back pressure for write response channel.  |  
      
For information about the AXI specification, refer to the ARM* website.