Pciexpress configuration, Come-cpc2 / bios operation – Kontron COMe-cPC2 User Manual

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COMe-cPC2 / BIOS Operation

PCIExpress Configuration

Feature

Option

Description

Relaxed Ordering

Auto

Disables
Enabled

Enables/Disables PCI Express Device Relaxed Ordering.

Maximum Payload Size

Auto

128 Bytes
…

4096 Bytes

Set Maximum Payload of PCI Express Device or allow

System BIOS to select the value.

Extended Tag Field

Auto

Disables

Enabled

If Enabled, allows Device to use 8-bit TAG field as a
requester.

No Snoop

Auto

Disables

Enabled

Enables/Disables PCI Express Device No Snoop option.

Maximum Read Request Size

Auto

128 Bytes

…
4096 Bytes

Set Maximum Read Request Size of PCI Express Device or
allow System BIOS to select the value.

Active State Power Management

Disabled

Enabled

Enables/Disables PCI Express L0 and L1 link power

states.

Extended Synch

Auto

Disables

Enabled

If Enabled, allows generation of Extended
Synchronisation patterns.

PCIE Port N

Auto

Enabled

Disabled

Enables/Disables or autoconfigures the PCIE Port N

PCIE High Priority Port

Disabled

Port 0

Port 1
Port 2

…
Port 5

Select the PCIE Port that gets higher priority than the
others.

PCIE Port N IOxAPIC Enable

Disabled

Enabled

Enables/Disables the APIC Support for the PCIE Port N

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