LANfinity™ CN7221
Home Networking Physical Layer Device with
Integrated Analog Front End Circuitry
This document describes the
CN7221
Home Networking Physical Layer
(PHY) with Integrated Analog Front End (AFE). It includes device pinouts,
signal descriptions, and timing diagrams. The
CN7221
allows home
networks to operate over common telephone wires at 1 Mbps. The
CN7221
simplifies system designs and improves their reliability by
eliminating the need for a separate AFE comprised of discrete
components.
The
CN7221
supports the emerging home phoneline networking standard
proposed by the Home Phoneline Networking Alliance (HomePNA).
Conexant has announced plans to release a family of multifunction home
phoneline networking chipsets. The first products to be announced in this
family include the
RS7111A
1/10/100 PCI/CardBus Multifunction
Controller, the
RS7220
Home Networking PHY, the
RS7112
Multifunction
Controller with Integrated PHY, and the
CN7221
Home Networking PHY
with Integrated AFE (see Ordering Information, page 2).
The HomePNA phoneline network utilizes existing telephone wiring to
connect computers and devices without interrupting phone service.
Industry-standard home networking products will enable a variety of home
computing opportunities including
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shared Internet access using a single phone line
printer/peripheral sharing
file and application sharing
networked gaming
Features
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Supports the HomePNA 1.0 specification for
a home phoneline network
1 Mbps data rate
Integrated Analog Front End
Configurable transmit power level; high- and
low-power
Configurable transmit data rate; low- and
high-speed
32-pin TQFP package
HomePNA 1.0 Specification
Features
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Meets HomePNA certification test
requirements
Uses existing phonelines, no new wires
required
Compatible with existing services
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Internet access, voice services, and
home network coexist on the same wire
Robust protocol assures performance over
poor wiring infrastructure
FCC Part 15- and Part 68-compliant
The
CN7221
can be combined with the
RS7112
Multifunction PCI/CardBus
Controller and Conexant’s host-controlled (HCF) V.90/K56flex modem to
provide a variety of home networking plus 56 Kbps modem solutions.
Data Sheet
Conexant Proprietary Information
Dissemination or use of this information is not permitted without the written permission of Conexant Systems, Inc.
Order No. LAN-056
Rev. A, March 12, 1999
CONEXANT [ CONEXANT SYSTEMS, INC ]
