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Functional Architecture Intel® Server Board SE7520JR2
Revision 1.0
C78844-002
64
CKE O Clock Enable for Memory
CS#[1..0] O Chip Select for Memory
DQM[7..0] O Memory Data Byte Mask
DSF O Memory Special Function Enable
HCLK O Memory Clock
[11..0] O Memory Address Bus
MD[31..0] I/O Memory Data Bus
RAS# O Row Address Select
WE# O Write Enable
3.4.7.3 Dual video
The BIOS supports single and dual video modes. The dual video mode is enabled by default.
• In single mode (Dual Monitor Video=Disabled), the onboard video controller is disabled
when an add-in video card is detected.
• In dual mode (Onboard Video=Enabled, Dual Monitor Video=Enabled), the onboard
video controller is enabled and will be the primary video device. The external video card
will be allocated resources and is considered the secondary video device. BIOS Setup
provides user options to configure the feature as follows:
•
Onboard Video
Enabled
Disabled
Dual Monitor Video
Enabled
Disabled
Shaded if onboard video is set
to "Disabled"
3.4.8 Network Interface Controller (NIC)
The Intel 82546GB dual-channel gigabit network interface controller supplies the baseboard
with two network interfaces. The 82546GB is a highly integrated PCI LAN controller in a 21 mm
2
PBGA package. Each channel is capable of supporting 10/100/1000 operation and alert-on-LAN
functionality. Both channels can be disabled by using the BIOS Setup utility, which is accessed
during POST. The 82546GB supports the following features:
• 64-bit PCI-X Rev. 1.0 master interface
• Integrated IEEE 802.3 10Base-T, 100Base-TX and 1000Base-TX compatible PHY
• IEEE 820.3ab auto-negotiation support
• Full duplex support at 10 Mbps, 100Mbps and 1000 Mbps operation
• Integrated UNDI ROM support
• MDI/MDI-X and HWI support
• Low power +3.3 V device