Product Description
37
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 6. ICH2 and CNR Signal Interface
✏
NOTE
The USB interface from the ICH2 to the CNR is not supported on this board.
The interfaces supported by the CNR connector include (but are not limited to) 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.
The CNR connector includes power signals required for power management and for CNR board
operation.
1.12 Hardware Management Subsystem (Optional)
The hardware management features enable the board to be compatible with the Wired for
Management (WfM) specification. The board has several hardware management features,
including the following:
• Hardware monitoring
• Chassis intrusion detect connector
• Fan control and monitoring (implemented on the SMSC LPC47M102 I/O controller)
For information about Refer to
The WfM specification Table 3, page 16
Fan control functions of the SMSC LPC47M102 I/O controller Section 1.11, page 36
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