Arria V Avalon-ST Interface for PCIe Solutions User Guide

ID 683733
Date 6/03/2020
Public

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Document Table of Contents

9.1.2. Power Management Messages

Table 70.  Power Management Messages

Message

Root Port

Endpoint

Generated by

Comments

App Layer

Core

Core (with App Layer input)

PM_Active_State_Nak

TX

RX

No

Yes

No

PM_PME

RX

TX

No

No

Yes

PME_Turn_Off

TX

RX

No

No

Yes

The pme_to_cr signal sends and acknowledges this message:

  • Root Port: When pme_to_cr is asserted, the Root Port sends the PME_turn_off message.
  • Endpoint: When PME_to_cr is asserted, the Endpoint acknowledges the PME_turn_off message by sending a pme_to_ack message to the Root Port.

PME_TO_Ack

RX

TX

No

No

Yes