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| 型號(hào)： | HW2000 |
| 廠商： | Lineage Power |
| 英文描述： | Home Phoneline Networking Physical Layer(主電話線網(wǎng)絡(luò)物理層) |
| 中文描述： | 家庭電話線網(wǎng)絡(luò)物理層（主電話線網(wǎng)絡(luò)物理層） |
| 文件頁(yè)數(shù)： | 2/6頁(yè) |
| 文件大?。?/td> | 142K |
| 代理商： | HW2000 |
2
Lucent Technologies Inc.
HW3000M/HW2000 Home Wire
Home Phoneline Networking Physical Layer
Preliminary Product Brief
August 2000
Description
The Lucent Technologies Microelectronics Group’s
HW3000M/HW2000 Home WirePHY is a highly inte-
grated solution designed to quickly add high-speed net-
working over existing, residential telephone wiring to
existing products, such as 10/100 Mbits/s Ethernet
designs. The Home Wire PHY provides a direct con-
nection to an external IEEE 802.3 MAC or to a USB-to-
Ethernet controller through its IEEE802.3u-compatible
MII. The Home WirePHY provides automatic rate
adaptation, instantaneously adjusting to the changing
electrical characteristics of the home phoneline com-
munications channel, in order to select the optimal
speed which can reach a maximum of 16 Mbits/s.
The two-device HW3000M/HW2000 Home WirePHY
fully supports the HomePNAInterface Specification
2.0. The HomePNAwas formed to develop specifica-
tions for interoperable, home networked devices that
use existing residential telephone wiring, regardless of
the topology. The chip set is also fully compliant with
the HomePNAPHY Specification Revision 1.1, in order
to provide backwards compatibility with existing appli-
cations and home phoneline networks built around
HomePNA1.1 technology.
In order to provide a robust, cost-effective, and simple-
to-use home phoneline networking solution, the Home
WirePHY is compatible with the existing IEEE802.3u
MII specification. Up to 25 PCs, peripherals, or network
devices can be installed on a single home phoneline
network that can span up to 1000 feet between the two
farthest points.
The HW3000M/HW2000 Home Wire PHY is fully com-
patible with existing phone services such as voice, fac-
simile, V.90/V.92 modem connections, ISDN voice and
data, ADSL, and G.Lite. Products based on the Home
WirePHY will not compromise or interrupt any of these
services. Frequency division multiplexing (FDM) tech-
nology is used to simultaneously support existing and
emerging telephone services along with networked
HomePNAdata traffic. The frequency ranges for
HomePNAbased products have been carefully
selected to avoid interference from these various ser-
vices that may be encountered in a typical home. As
shown in Figure 1, signals from the Home Wire PHY
are centered at 7 MHz, with the signal ranging from
4.25 MHz to 9.75 MHz. This frequency range is well
above the frequencies used for existing phone ser-
vices.
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