Intel® Quartus® Prime Pro Edition User Guide: Platform Designer

ID 683609
Date 12/12/2022
Public

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6.12.6. Width Adaptation and Data Packing in Platform Designer

Data packing applies only to systems where the data width of Avalon hosts or AXI managers is less than the data width of Avalon agents or AXI subordinates, respectively.

The following rules apply:

  • Data packing is supported when hosts and agents are Avalon® memory mapped.
  • Data packing is not supported when any manager or subordinate is an AMBA* 3 AXI, AMBA* 4 AXI, or APB component.

For example, for a read/write command with a 32-bit host connected to a 64-bit agent, and a transaction of 2 burstcounts, Platform Designer sends 2 separate read/write commands to access the 64-bit data width of the agent.