Advantech SOM-6894, User Manual, Page: 51 / 84

43 SOM-6894 User Manual
Chapter 3
A
MI BIOS
Prefetchable Memory
This item allows users to select Prefetchable Memory range for this root
bridge.
Reserved I/O
This item allows users to select Reserved I/O (4k/8k/12k/16k…/48k) range
for this root bridge.
PCIE LTR
This item allows users to enable or disable PCIE LTR.
PCIE LTR Lock
This item allows users to enable or disable PCIE LTR Configuration Lock.
Snoop Latency Ocerride
This item allows users to select Snoop Latency Ocerride for PCH PCIE.
Non Snoop Latency Ocerride
This item allows users to select Non Snoop Latency Ocerride for PCH PCIE.
– PCI Express Root Port 4 Configuration
Figure 3.28 PCI Express Root Port 4 Configuration
PCI Express Root Port 4
This item allows users to enable or disable PCI Express Root Port.
ASPM Support
This item allows users to set the ASPM level.
Force L0s- Force all links to L0s state.
Auto-BIOS auto configure
Disable- disables ASPM
L1 Substates