Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/19/2024
Public

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4.3.4.3.1.5. SYSCO Interface for TCU

This interface allows the TCU to remove itself from a coherency domain in response to a request on the LPI interface. The coherence signals are given in the following table.

Table 84.  TCU SYSCO signal connectivity

Signal Name

IO

Connectivity

Description

syscoreq

O

Connected to NCore

System coherency request

  • HIGH: To indicate that the manager is requesting to enter the coherency domain
  • LOW: To indicate that the manager is requesting to exit the coherency domain

syscoack

I

Connected to NCore

System coherence acknowledge.

This input transitions to the same level as syscoreq when the request enter or exit the coherence domain is complete