Specifications

Intel
®
810E2 Chipset Platform
R
Design Guide 81
3.21.1.2. Point-to-Point Interconnect
The following guidelines are for a single-solution motherboard. Either 82562EH, 82562ET or CNR is
installed.
Figure 46. Single-Solution Interconnect
lan_p2p
ICH2
Platform LAN
Connect
(PLC)
LAN_TXD[2:0]
LAN_RXD[2:0]
LAN_RSTSYNC
LAN_CLK
L
Table 23. Single-Solution Interconnect Length Requirements
Configuration L Comment
Intel
®
82562EH 4.5” to 10” Signal lines LAN_RXD[2:1] and LAN_TXD[2:1] are not connected.
Intel
®
82562ET 3.5” to 10”
CNR 3” to 9” The trace length from the connector to LOM should be 0.5” to 3.0”
3.21.1.3. LOM/CNR Interconnect
The following guidelines allow for an all-inclusive motherboard solution. This layout combines the
LOM, dual-footprint, and CNR solutions. The resistor pack ensures that either a CNR option or a LAN
on Motherboard option can be implemented at one time, as shown in the following figure. This figure
shows the recommended trace routing lengths.
Figure 47. LOM/CNR Interconnect
lom-cnr_conn
ICH2
Res.
Pack
CNR PLC Card
B
A
PLC
C D