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.