Lan Subsystem Software; Cnr (Optional); Ich4 And Cnr Signal Interface - Intel D845EPT2 Specification

1.11.3 LAN Subsystem Software

LAN software and drivers are available from Intel's World Wide Web site.
For information about
Obtaining LAN software and drivers

1.12 CNR (Optional)

The Communication and Networking Riser (CNR) connector provides an interface that supports
the audio, modem, and LAN interfaces of the Intel 845E chipset. Figure 7 shows the signal
interface between the riser and the ICH4.
The interfaces supported by the CNR include the following:
•
AC '97 interface: supports audio and/or modem functions on the CNR card.
•
LAN interfaces: an eight-pin interface for use with Platform LAN Connection (PLC) based
devices.
•
SMBus interface: provides Plug-and-Play functionality for the CNR card.
The CNR connector includes power signals required for power management and for CNR card
operation. To learn more about the CNR, refer to the CNR specification.
The onboard two-channel audio subsystem can be upgraded to four- or six-channel audio using a
CNR audio upgrade card in a slave configuration. CNR audio upgrade cards are available in
multiple configurations from several vendors supporting analog or S/P-DIF digital connections.
For information about
CNR audio upgrade cards
✏
NOTE
If you install a CNR card that cannot support a multichannel audio upgrade, the Desktop Boards'
integrated audio codec will be disabled. This only applies to D845EBG2 and D845EPT2 boards
that have both the onboard audio subsystem and a CNR.
AC '97 Interface
Intel 82801DB
LAN Interface
I/O Controller Hub
(ICH4)
SMBus
Figure 7. ICH4 and CNR Signal Interface
Product Description
Refer to
Section 1.3, page 17
Communication and
Networking Riser
(Up to two AC '97 codecs
and one LAN device)
OM14262
Refer to
http://developer.intel.com/technology/cnr/
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