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

ID 683364
Date 12/15/2018
Public
Document Table of Contents

4.6. Avalon® -ST Delay Core

Figure 138.  Avalon® -ST Delay CoreThe Avalon® -ST Delay Core provides a solution to delay Avalon® -ST transactions by a constant number of clock cycles. This core supports up to 16 clock cycle delays.

The Avalon® -ST Delay core adds a delay between the input and output interfaces. The core accepts transactions presented on the input interface and reproduces them on the output interface N cycles later without changing the transaction.

The input interface delays the input signals by a constant N number of clock cycles to the corresponding output signals of the output interface. The Number Of Delay Clocks parameter defines the constant N, which must be from 0 to 16. The change of the in_valid signal is reflected on the out_valid signal exactly N cycles later.