Intel D850GB Product Specification - Page 31

CNR Optional - chipset drivers

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Product Description 1.9.3 LAN Subsystem Software LAN software and drivers are available from Intel's World Wide Web site. For information about Obtaining LAN software and drivers Refer to Section 1.2, page 16 1.10 CNR (Optional) The CNR connector provides an interface that supports the audio, modem, USB, and LAN interfaces of the Intel 850 chipset. Figure 5 shows the signal interface between the riser and the ICH2. CNR Connector Intel 82801BA I/O Controller Hub (ICH2) AC '97 Interface LAN Interfaces SMBus USB Power Communication and Networking Riser (Up to two AC '97 codecs and one LAN device) OM10412 Figure 5. ICH2 and CNR Signal Interface The interfaces supported by the CNR include the following: • AC '97 interface: supports audio and/or modem functions on the CNR board. • LAN interfaces: provides one of two LAN interfaces for networking functions. Interfaces include an eight-pin interface for use with Platform LAN Connection (PLC) based devices, and a 17-pin interface for Media Independent Interface (MII) based devices (commonly referred to as a PHY). • SMBus interface: provides Plug-and-Play functionality for the CNR board. • USB interface: provides a USB interface for the CNR board. The CNR connector includes power signals required for power management and for CNR board operation. To learn more about the CNR, refer to the CNR specification.  NOTE If you install a CNR card with an audio codec that cannot support a mutilchannel audio upgrade, the D850GB board's integrated audio codec will be disabled. This only applies to D850GB boards that have both the onboard audio subystem and a CNR. For information about Obtaining the CNR specification Refer to Section 1.3, page 16 31

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Product Description
31
1.9.3
LAN Subsystem Software
LAN software and drivers are available from Intel’s World Wide Web site.
For information about
Refer to
Obtaining LAN software and drivers
Section 1.2, page 16
1.10 CNR (Optional)
The CNR connector provides an interface that supports the audio, modem, USB, and LAN
interfaces of the Intel 850 chipset.
Figure 5 shows the signal interface between the riser and the
ICH2.
Intel 82801BA
I/O Controller Hub
(ICH2)
Communication and
Networking Riser
(Up to two AC ’97 codecs
and one LAN device)
CNR Connector
AC ’97 Interface
LAN Interfaces
SMBus
Power
OM10412
USB
Figure 5.
ICH2 and CNR Signal Interface
The interfaces supported by the CNR include the following:
•
AC ’97 interface:
supports audio and/or modem functions on the CNR board.
•
LAN interfaces:
provides one of two LAN interfaces for networking functions.
Interfaces
include an eight-pin interface for use with Platform LAN Connection (PLC) based devices, and
a 17-pin interface for Media Independent Interface (MII) based devices (commonly referred to
as a PHY).
•
SMBus interface:
provides Plug-and-Play functionality for the CNR board.
•
USB interface:
provides a USB interface for the CNR board.
The CNR connector includes power signals required for power management and for CNR board
operation.
To learn more about the CNR, refer to the CNR specification.
NOTE
If you install a CNR card with an audio codec that cannot support a mutilchannel audio upgrade,
the D850GB board’s integrated audio codec will be disabled.
This only applies to D850GB
boards that have both the onboard audio subystem and a CNR.
For information about
Refer to
Obtaining the CNR specification
Section 1.3, page 16