Intel® L- and H-tile Avalon® Memory-mapped+ IP for PCI Express* User Guide

ID 683527
Date 10/19/2021
Document Table of Contents Read Data Mover Status Avalon-ST Source

Table 13.  Read Data Mover Status Avalon-ST Source Interface
Signal Name Direction Description
rddm_tx_data_o[18+<PFNUM_WIDTH>-1:18] Output These bits contain the function number.
rddm_tx_data_o[17:0] Output

[17:16] : reserved

[15] : reserved
Note: When the Enable Completion Checking option in the Avalon® -MM Settings tab of the GUI is On, this bit becomes the completion timeout error flag.

[14:12] : application specific

[11:9] : reserved

[8] : priority

[7:0] : descriptor ID

rddm_tx_valid_o Output Valid status signal.

This interface does not have a ready input. The application logic must always be ready to receive status information for any descriptor that it has sent to the Read Data Mover.

The Read Data Mover copies over the application specific bits in the rddm_tx_data_o bus from the corresponding descriptor. A set priority bit indicates that the descriptor is from the priority descriptor sink.

A status word is output on this interface when the processing of a descriptor has completed, including the reception of all completions for all memory read requests.

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