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AR# 30457

LogiCORE RapidIO - How does the core decide between TargetID field and TargetInfo field in the Target Response Port?

Description

Which information is embedded in the packet when generating a RESPONSE packet (FType = 13), TRESP_TID or TRESP_MSG_SEG, TRESP_MBOX and TRESP_LETTER?

See RapidIO Packet Format Block Diagram in the Logical I/O Transport Layer User Guide.

How does the core decide which port to insert into the message?

Solution

The target_info is used for message responses (ttype = 4'b0001) when Doorbell and Messaging has been enabled. In all other instances, target_TID is used.

AR# 30457
Date Created 03/12/2008
Last Updated 12/15/2012
Status Active
Type General Article