Avalue EQM-A50M - Manual (Page 21)

User ’s Manual
EQM-A50M User ’s Manual 21
3.6.2.1.1 PCI Subsystem Settings
Item Options Description
Relaxed Ordering
Enabled
Disabled[Default]
Enables or Disable PCI Express Device
Relaxed Ordering.
Extended Tag
Enabled
Disabled[Default]
If ENABLED allows Device to use 8-bit Tag
field as a requester.
No Snoop
Enabled[Default]
Disabled
Enables or Disables PCI Express Device No
Snoop option.
Maximum Payload
Auto[Default]
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes
Set Maximum Payload of PCI Express Device
or allow System BIOS to select the value.
Maximum Read Request
Auto[Default]
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes
Set Maximum Read Request Size of PCI
Express Device or allow System BIOS to
select the value.
ASPM Support
Disabled[Default]
Auto
Force L0s
Set the ASPM Level: Force L0s – Force all
links to L0s State : AUTO – BIOS auto
configure: DISABLE – Disables ASPM.
Extended Synch
Enabled
Disabled[Default]
If ENABLED allows generation of Extended
Synchronization patterns.
Link Training Retry
Disabled
2
3
5[Default]
Defines number of Retry Attempts software
will take to retrain the link if previous training
attempt was unsuccessful.
Link Training Timeout (uS) 10-1000
Defines number of Microseconds software will
wait before polling
‘Link Training’ bit in Link
Status register. Value range from 1 to 100 uS.
Unpopulated Links
Keep Link ON[Default]
Disable Link
In order to save power, software will disable
unpopulated PCI Express links, if this option
set to
‘Disable Link’.