Kontron KTQ77/Flex User Manual page 71

KTD-N0848-B
Function
Relaxed Ordering
Extended Tag
No Snoop
Maximum Payload
Maximum Read Request
ASPM Support
Extended Synch
Link Training Retry
Link Training Timeout
(uS)
Unpopulated Links
Restore PCIe Registers
Note1: Use either digit keys to enter value or +/- keys to increase/decrease value. Don't use mix of digit
keys and +/- keys.
Page 71
Selection
Disabled
Enabled
Disabled
Enabled
Disabled
Enabled
Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes
Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes
Disabled
Auto
Force L0s
Disabled
Enabled
Disabled
2
3
5
100 (note1)
Keep Link ON
Disable Link
Enabled
Disabled
BIOS - Advanced
Description
Enables or Disables PCI Express Device
Relaxed Ordering.
If ENABLED allows Device to use 8-bit Tag
field as a requester.
Enables or Disables PCI Express Device No
Snoop option.
Set Maximum Payload of PCI Express
Device or allow System BIOS to select the
value.
Set Maximum Read Request Size of PCI
Express Device or allow System BIOS to
select the value.
Set the ASPM Level: Force L0s
- Force all links to L0s State: Auto – BIOS
auto configure: Disable – Disabled ASPM
If ENABLED allows generation of Extended
Synchronization patterns.
Defines number of Retry Attempts software
will take to retrain the link if previous training
attempt was unsuccessful.
Defines number of Microseconds software
will wait before polling ´Link Training´ bit in
Link Status register. Value range from 1 to
100uS.
In order to save power, software will disable
unpopulated PCI Express links, if this option
set to ´Disabled Link´.
On non-PCI Express aware OS's (Pre
Windows Vista) some devices may not be
correctly reinitialized after S3.
Enabling this restores PCI Express device
configurations on S3 resume. Warning:
Enabling this may cause issues with other
hardware after S3 resume.
KTQ77/Flex Users Guide