User Manual

5-25
ASUS RS300-E11 Series
Maximum Payload [Auto]
Allows you to set Maximum Payload of PCI Express Device or allow System BIOS to
select the value.
Configuration options: [Auto] [128 Bytes] [256 Bytes] [512 Bytes] [1024 Bytes] [2048
Bytes] [4096 Bytes]
Maximum Read Request [Auto]
Allows you to set Maximum Read Request Size of PCI Express Device or allow
System BIOS to select the value.
Configuration options: [Auto] [128 Bytes] [256 Bytes] [512 Bytes] [1024 Bytes] [2048
Bytes] [4096 Bytes]
PCI Express Link Register Settings
ASPM Support [Disabled]
Allows you to set the ASPM level.
[Disabled]
Disables ASPM.
[Auto] BIOS auto configure.
[Force L0s] Force all links to L0 State.
Enabling ASPM may cause some PCI-E devices to fail.
Extended Synch [Disabled]
If this item is enabled, it will allow generation of Extended Synchronization patterns.
Configuration options: [Disabled] [Enabled]
Link Training Retry [5]
Allows you to define the number of Retry Attempts software will take to retrain the link
if previous training attempt was unsuccessful.
Configuration options: [Disabled] [2] [3] [5]
Link Training Timeout (uS) [1000]
Allows you to define the number of Microseconds software will wait before polling ‘link
Training’ bit in Link Status register.
Configuration options: [10] - [10000]
Unpopulated Links [Keep Link ON]
If this option is set to
[Disable Link], in order to save power, software will disable
unpopulated PCI Express Links.
Configuration options: [Keep Link ON] [Disabled Link]
PCI Express GEN 2 Settings
The items in this submenu allow you change PCI Express GEN Devices Settings.
PCI Express GEN2 Device Register Settings
Completion Timeout [Default]
In device Functions that support Completion Timeout programmability, allows system
software to modify the Completion Timeout value.
[Default]
50us to 50ms.
[Shorter] Software will use shorter timeout ranges supported by hardware.
[Longer] Software will use longer timeout ranges.
[Disabled] Disable completion timeout.