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10.4.23 PCI Express Settings
Feature
Options
Description
Relaxed Ordering
Disabled
Enabled
Enable or disable 'Relaxed Ordering' for the PCIe device.
Extended Tag
Disabled
Enabled
Enable this feature to use 8-bit tag field as a requester.
No Snoop
Disabled
Enabled
Enable or disable 'No Snoop' for the PCIe device.
Maximum Payload
Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
1096 Bytes
Select the maximum payload for the PCIe device manually or set to 'Auto'.
Maximum Read Request
Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
1096 Bytes
Select the maximum read request size for the PCIe device or set to 'Auto'.
ASPM Support
Disabled
Auto
Force L0s
Select the ASPM Level:
'Disabled' - Disables ASPM.
'Auto' - BIOS auto configure.
'Force L0s' - Forces all links to L0s state.
Extended Synch
Disabled
Enabled
Enable this feature to allow the generation of extended synchronization patterns.
Link Training Retry
Disabled
2
3
5
Select the number of retry attempts by the software to retrain the link.
Link Training Timeout (uS)
10 - 10000
Enter duration in microseconds for the software to wait before polling ‘Link Training’ bit in
the link status register. Default: 1000
Unpopulated Links
Keep Link ON
Disabled
Set to 'Disabled' to disable unpopulated PCIe links.
Restore PCIE Registers
Enabled
Disabled
If the non-PCI aware operating system does not properly reinitiliaze devices after S3, enable
this feature to restore PCIe device configurations on S3 resume.
Note:
This feature may cause issues with other hardware after S3 resume.
