Quartus® Prime Pro Edition User Guide: Platform Designer

ID 683609
Date 7/08/2024
Public

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5.1.3.4. AXI Translator

AMBA* 4 AXI allows omitting signals from interfaces. The translator bridges between these “incomplete” AMBA* 4 AXI interfaces and the “complete” AMBA* 4 AXI interface on the network interfaces.
Attention: If you connect an Avalon® agent or to a host, or connect an AXI subordinate to a manager, without response ports, the interconnect could ignore transaction responses, such as SLAVEERROR or DECODEERROR. This situation could lead to returning invalid data to the manager or host.

The AXI translator is inserted for both AXI managers and subordinates and performs the following functions:

  • Matches ID widths between the manager and subordinates in 1x1 systems.
  • Drives default values as defined in the AMBA* Protocol Specifications for missing signals.
  • Performs lock transaction bit conversion when an AMBA* 3 AXI manager connects to an AMBA* 4 AXI subordinate in 1x1 systems.