Specifications

Intel
®
810E2 Chipset Platform
R
90 Design Guide
Figure 51. Intel
®
82562EH Termination
1
2
3
4
5
6
TabTab
1
2
3
4
5
6
TabTab
8
Phone / modem
Shield ground
Line
8
7
7
IO_subsys_82562EH_term
1500 pF 1500 pF
6.8 µH
6.8 µH
6.8 µH 6.8 µH
0
T
10
9
1
2
3
B6008
rx_tx_p
rx_tx_n
0.022 µF
51.1 Ω
51.1 Ω
806 Ω
806 Ω
A+3.3 V
Tip
Ring
The filter and magnetics component T1 integrates the required filter network, high-voltage impulse
protection, and transformer to support the HomePNA LAN interface.
One RJ-11 jack (labeled “LINE” in the previous figure) allows the node to be connected to the
Phoneline, and the second jack (labeled “PHONE” in the previous figure) allows other down-line devices
to be connected at the same time. This second connector is not required by the HomePNA. However,
typical PCI adapters and PC motherboard implementations are likely to include it for user convenience.
A low-pass filter, setup in-line with the second RJ-11 jack, also is recommended by the HomePNA to
minimize interference between the HomeRun connection and a POTs voice or modem connection on the
second jack. This restricts of the type of devices connected to the second jack as the pass-band of this
filter is set approximately at 1.1 MHz. Refer to the HomePNA website (www.homepna.org
) for up-to-
date information and recommendations regarding the use of this low-pass filter to meet HomePNA
certifications.