Kontron COMe-bID7 User Manual page 80

Sub-Screen Second Level
Sub-screen
PCI Express GEN
2 Settings
www.kontron.com
Further Sub-Screens/Description
[Auto, 128 Bytes, 256 Bytes, 512 bytes, 1024
bytes, 2048 Bytes, 4096 Bytes]
Maximum Read [Auto, 128 Bytes, 256 Bytes, 512 bytes, 1024
Request bytes, 2048 Bytes, 4096 Bytes]
ASPM Support [Enabled, Disabled]
Warning
Enabling ASPM may cause some PCI-E devices to fail.
Extended Synch Allows Extended synchronization patterns.
[Enabled, Disabled]
Link Training Defines te number of retry attempts taken
Retry by Software to retain the link if a previous
training attempt was unsuccessful
[Disables, 2, 3, 5]
Link Training Defines number of mssec the software
Timeout waits before polling link training bit in Link
status register. Range is from (10 µsec. to
10000 µsec).
[1000]
Unpopulated Setting disable link disables unpopulated
Links PCI express links to save power
[Keep Link On, Disable Link]
Completion Allows System software to modify the
Timeout completion timeout value. Default range 50
µs to 50 ms. Available for device function
that support Completion timeout
programmability.
[Default, Shorter, Longer, Disabled]
ARI Forwarding 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. Default value:
Disabled
[Enabled, Disabled]
Atomic Op If enabled and the function is supported by
Requester the hardware, AtomicOp requests are
Enable initiated only if bus master enable bit is set
in the command register.
[Enabled, Disabled]
AtomicOP Egress If enabled and the function is supported by
Block the hardware, outbound AtomicOp requests
via Egress ports are blocked.
[Enabled, Disabled]
IDO request If enabled and the function is supported by
Enable the hardware, the number of ID-based
ordering (IDO) bit (attribute [2]) requests to
be initiation is allowed to be set.
COMe-bID7 User Guide Rev. 1.2
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