Intel® Quartus® Prime Pro Edition User Guide: Platform Designer
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7.8.2.1. Avalon® Packets to Transactions Converter IP Data Packet Formats
The Avalon® Packets to Transactions Converter IP expects incoming data streams to be in the formats shown in the table below.
|   Byte  |  
        Field  |  
        Description  |  
     
|---|---|---|
|   Transaction Packet Format  |  
     ||
|   0  |  
      Transaction code |   Type of transaction.  |  
     
|   1  |  
        Reserved  |  
        Reserved for future use.  |  
     
|   [3:2]  |  
      Size |   Transaction size in bytes. For write transactions, the size indicates the size of the data field. For read transactions, the size indicates the total number of bytes to read.  |  
     
|   [7:4]  |  
      Address |   32-bit address for the transaction.  |  
     
|   [n:8]  |  
      Data |   Transaction data; data to be written for write transactions.  |  
     
|   Response Packet Format  |  
     ||
|   0  |  
      Transaction code |   The transaction code with the most significant bit inversed.  |  
     
|   1  |  
        Reserved  |  
        Reserved for future use.  |  
     
|   [4:2]  |  
      Size |   Total number of bytes read/written successfully.  |