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Pci express gen 2 settings – Avalue EBM-A50M User Manual

Page 47

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User

’s Manual

EBM-A50M User

‟s Manual

47

3.6.2.1.2 PCI Express GEN 2 Settings

Item

Options

Description

Completion Timeout

Default

Shorter

Longer

Disabled

In Device functions that support
Completion Timeout programmability,
allows system software to modify the
Completion Timeout value.

“Default” 50us

to 50ms

ARI Forwarding

Disabled [Default]

Enabled

If supported by hardware and set to
“Enabled”, the Downstream Port disables
its traditional Device Number field being 0
enforcement when turning a Type1
configuration Request into a Type0
Configuration Request, permitting access
to Extended Functions in an ARI Device
immediately below the Port.

AtomicOp Requester

Enable

Disabled

Enabled

If supported by hardware and set to
“Enabled”, this function initiates AtomicOp
Requests only if Bus Master Enable bit is
in the Command Register Set

AtomicOp Egress

Blocking

Disabled

Enabled

If supported by hardware and set to
“Enabled”, outbound AtomicOp Requests
via Egress Ports will be blocked.

IDO Request Enable

Disabled

Enabled

If supported by hardware and set to
“Enabled”, this permits setting the number
of ID-Based Ordering (IDO) bit (Attribute
[2]) requests to be initiated.

IDO Completion Enable

Disabled

Enabled

If supported by hardware and set to
“Enabled”, this permits setting the number
of ID-Based Ordering (IDO) bit (Attribute
[2]) requests to be initiated.