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Smarty's avatar
Smarty
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4 years ago
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PCI Express Stratix 10 HIP PME_to_ACK / PME_to_turnoff messages

Hi all, I am designing a S10 design with PCIe HIP. On Cyclone 5 / Arria 10 it was possible to detect the PME_turn_off message with the outport pme_to_sr of the HIP. Also it was possible to gener...
  • SengKok_L_Intel's avatar
    SengKok_L_Intel
    4 years ago

    Please refer to section 6.1.23.2, it state that the PME_TO_Ack generation from application layer on the Avalon ST Tx interface. Wherer the pme_turn_off message can be observed from the Avalon-ST RX interface.


    Regards -SK


Smarty's avatar
Smarty
Icon for New Contributor rankNew Contributor
4 years ago

Hi,

I was already aware of this table but it does not address my questions.

Short explanation:

apps_pm_xmt_turnoff : This input is to send the PME_Turn_Off_Message. This is typically required for a rootport because the rootport sends this message to the endpoint. An endpoint needs to detect, if the PM_Turn_Off_Message was received (from the rootport).

If the PM_Turn_Off_Message was received (when in endpoint mode) this requires an output on the PCIe HIP core. Therefore pme_to_sr (Arria 10 / Cyclone 5) is an output.

In Table 47 I cannot find an input to the HIP core that sends the PME_to_ACK Message (in Arria 10 / Cyclone V this port was called pme_to_cr)

Regards