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  • TI Thinks Resolved

XIO2001: ASPM

Guru 11735 points

Replies: 12

Views: 534

Part Number: XIO2001

HI Sir 

About XIO2001 errata and ASPM issue 

1. What's the situation that XIO2001 will initial upstream memory write function?

2. If PCI device is not a bus master ,is this ASPM issue exist ?

our application is a PCIe to PCI riser card 

www.ti.com/.../scpz008b.pdf

  • Kai,

    1. What's the situation that XIO2001 will initial upstream memory write function?

    XIO2001 will initiate a upstream memory write whenever there is data passing from a downstream device to the upstream memory space.

    2. If PCI device is not a bus master ,is this ASPM issue exist ?

    The issue will still exist when PCI device is not the master.

    Please follows the errata to avoid this issue.
  • In reply to Malik Barton57:

    HI Malik 

    When we disable ASPM and use Intel Skylake platform with WIN10 OS to test ,The system will hang ,please refer to below picture 

    But we use older platform ,the system will workable 

    Do you have any idea or any register can solve this issue ?

  • In reply to Kai Hsiao:

    Kai,

    I am reviewing the information provided and will provide more details as soon as possible.
  • In reply to Malik Barton57:

    Kai,

    Can the customer provide the entire PCIe trace for their test? There seems to be some information missing from the picture above. Also could you confirm with the customer that ASPM_CTRL_DEF_OVRD = 00? If ASPM is disabled the Link should stay up and both XIO2001 and Host should stay in L0 mode.
  • In reply to Malik Barton57:

    Hi Malik

    If any data i need to provide 

    Please kindly let me know 

    Thanks 

  • In reply to Malik Barton57:

    Hi Malik

    OK!! Let me check it
  • In reply to Kai Hsiao:

    Kai,

    I will wait for your reply.
  • In reply to Kai Hsiao:

    Hi Kai,

    Is the XIO2001 connected to a "PCIe only" port on their system, or a port with multiple functionality like PCIe/USB/SATA/etc.?

    Regards,
    I.K.
  • In reply to I.K. Anyiam:

    Hi Kai,

    Any updates on this issue?

    Regards,
    I.K.
  • In reply to I.K. Anyiam:

    Hi I.k

    I will check ,Thanks for your take care

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