Intel D850MVSE - LAN Subsystem Software; CNR (Optional); ICH2 and CNR Signal Interface

Intel Desktop Board D850MD/D850MV Technical Product Specification
36
1.11.3 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 1.3, page 18
1.12 CNR (Optional)
The CNR connector provides an interface that supports the audio, modem, USB, and LAN
interfaces of the Intel 850 chipset. Figure 10 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 Interface
SMBus
OM12277
USB
Figure 10. ICH2 and CNR Signal Interface
✏
NOTE
The USB bus is routed from the NEC USB 2.0 controller if the USB 2.0 option is supported.
The CNR supports the following interfaces:
• AC ’97 interface: supports audio and/or modem functions on the CNR board. The
D850MD/D850MV boards support six-channel audio using a CNR board.
• LAN interface: eight-pin interface for use with PLC-based devices.
• 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 multichannel audio upgrade,
the D850MD and D850MV boards’ integrated audio codec will be disabled. This only applies to
D850MD and D850MV boards that have both the onboard audio subsystem and a CNR.
For information about Refer to
The CNR specification Section 1.5, page 19