Advantech ARK-5261, User Manual

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43 ARK-5261 User Manual
Chapter 3
A
MI BIOS
Setup
PCI Express Device Register Settings:
 Relaxed Ordering
This item allows users to enable or disable relaxed ordering.
 Extended Tag
This item allows users to enable or disable extended tags.
 No Snooping
This item allows users to enable or disable the No Snooping function.
 Maximum Payload
This item allows users to set the maximum payload for PCI Express devices or
authorize the system BIOS to select the value.
 Maximum Read Request
This item allows users to set the maximum read request size for PCI Express
devices or authorize the system BIOS to select the value.
PCI Express Link Register Settings:
 ASPM Support
This item allows users to enable or disable ASPM support.
 Extended Synch
This item allows users to enable or disable the Extended Synch function.
 Link Training Retry
This item allows users to define the number of retry attempts for software link
training.

Link Training Timeout (uS)
This item allows users to define the number of microseconds the software will
wait before polling the “Link Training” bit in the link status register. Values range
from 10 to 10000 uS.
 Unpopulated Links
To save power, the software will disable unpopulated PCI Express links if this
option set as “Disable Link”.