AIMB-584 User Manual 38
PCI Express Settings
– Relaxed Ordering [Disable]
Enables or Disables PCI Express Device Relaxed Ordering.
– Extended Tag [ Disabled ]
Enable allows Device to use 8-bit Tag field as a requester.
– No Snoop [ Enabled ]
Enables or Disables PCI Express Device No Snoop option.
– Maximum Payload [ Auto ]
Set Maximum Payload of PCI Express Device or allow System BIOS to
select the value, and the default is "Auto".
– Maximum Read Request [ Auto ]
Set Maximum Read Request Size of PCI Express Device or allow System
BIOS to select the value.
– ASPM Support [ Disabled ]
Set the ASPM Level: Force L0s - Force all links to L0s State.
AUTO - BIOS auto configure
DISABLE - Disables ASPM
– Extended Synch [ Disabled ]
Enable allows generation of Extended Synchronization patterns.
– Link Training Retry
Defines number of Retry Attempts software will take to retrain the link if previ-
ous training attempt was unsuccessful.
– Link Training Timeout (uS)
Defines number of Microseconds software will wait before polling 'Link Train-
ing' bit in Link Status register. Value range from 10 to 10000 uS.
– Unpopulated Links [ Keep Link On ]
In order to save power, software will disable unpopulated PCI Express links,
if this option set to 'Disable Link'.
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