PCI Express Settings
Change PCI Express Devices Settings.
PCI Express Device Register Settings
Relaxed Ordering: Enables or Disables PCI Express Device Relaxed Ordering.
Extended Tag: If ENABLED allows Device to use 8-bit Tag field as a requester.
No Snoop: Enabled or Disables PCI Express Device No Snoop option.
Maximum Payload: Set Maximum Payload of PCI Express Device or allow System BIOS to select
the value.
Maximum Read Request: Set Maximum Read Request Size of PCI Express Device or allow System
BIOS to select value.
PCI Express Link Register Settings
ASPM Support: Set the ASPM level: Force L0s - Force all links to L0s state: AUTO - BIOS auto
configure: DISABLE- Disables ASPM. WARNING: Enabling ASPM may cause some PCI-E devices to
fail.
Extended Synch: If ENBLED allows generation of extended synchronization patterns.
Link Training Retry
Defines number of retry attempts software will take to retrain the link if previous training attempt was
unsuccessful.
Link Training Time out (uS)
Defines number of Microseconds software will wait before polling “Link training” bit in link status register.
Value range from 10 to 10000 uS.
Unpopulated Links
In order to save power, software will disable unpopulated PCI Express Links. If this option save to “Disable
Link”.
Restore PCIE Registers
On non-PCI Express aware OS’s some device may not be correctly reinitial after S3. Enableling this restore
PCI Express device configurations on S3 resume.
Warning: Enabling this may cause issues with other hardware after S3 resume.
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