DOUT - 1.1 English

Soft-Decision FEC Integrated Block LogiCORE IP Product Guide (PG256)

Document ID

PG256

Release Date

2022-10-19

Version

1.1 English

Interface

Specifies the DOUT and DOUT_WORDS interface configuration. When Unconfigured, the full interfaces are exposed as detailed in Port Descriptions. When Pre-configured, the interface is simplified as per the Vivado® IDE settings.

Lanes

Specifies the number of DOUT lanes exposed on the IP instance (1, 2, or 4).

Words configuration

Specifies if the DOUT_WORDS configuration: Fixed, Per Block, or Per Transaction.

When Fixed, the DOUT_WORDS AXI4-Stream interface is removed from the IP instance and is driven with the specified number of words. The DOUT AXI4-Stream interface transmits with the specified number of words.

When Per Block or Per Transaction is selected, the DOUT_WORDS AXI4-Stream interface is present:

Per Block configures the IP instance to expect a single DOUT_WORDS value per output code block.
Per Transaction configures the IP instance to expect one DOUT_WORDS value per output transaction on the DOUT AXI4-Stream interface.

Number of words

Specifies the fixed number of words that is expected on the DOUT interface for every transaction. This is used when the words configuration is set to Fixed.