SUPER MICRO Computer X9SPV-F, X9SPV-LN4F user manual PCI Express GEN 2 Settings

X9SPV-F/LN4F Motherboard User Manual

Maximum Read Request

This feature selects the setting for the PCI Express maximum Read Request size. The options are Auto, 128 Bytes, 256 Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.

ASPM Support

Set this item to the desired ASPM (Active State Power Management) level. The options are Disabled, Auto and Force L0s.

Extended Synch

Select Enabled for Extended Synchronization support, which will extend the same synchronization patterns for the PCI-E device. The options are Disabled and Enabled.

Link Training Retry

This feature allows the user to decide how many attempts a software program can make before time-out for the program. The default setting is 5. The options are Disabled, 2, 3, and 5.

Link Training Timeout (US)

This feature allows the user to decide how many microseconds a software pro- gram should wait before polling the 'Link Training' bit in the Link Status Register. The range is between 10 to 1000. The default setting is 500.

Unpopulated Links

Select Disable Link to disable the unpopulated PCI-E links (connections) to save power. The options are Keep Link ON and Disable.

PCI Express GEN 2 Settings

Completion Timeout

For device functions that support completion timeout programmability, this fea- ture allows system software to modify the completion timeout value. If Default is selected, the timeout value is 50us to 50ms. If Shorter is selected, the software will use shorter timeout ranges supported by the hardware. If Longer is selected, software will use longer ranges supported by the hardware. The options are Default, Shorter, Longer, and Disabled.

ARI Forwarding (Available when supported by the hardware)

If set to Enabled, the downstream port disables it's traditional Device Number field (0 enforcement) when turning a Type1 Configuration Request into a Type0

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