Pci Express Settings - Congatec COM Express conga-TCA3 User Manual

10.4.23

PCI Express Settings

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