OCTAL 10/100BASE-TX ETHERNET BroadR-Reach™ TRANSCEIVERThe BCM54881 is a member of Broadcom’s BroadR-Reach family of
copper PHY products. It includes eight complete 10/100BASE-TX and
BroadR-Reach transceivers integrated on a single 65 nm CMOS chip.
The BCM54881 includes eight S3MII serial media access controller
(MAC) Interfaces and eight copper ports, whereby each copper port
supports one, two, or four twisted pair line connections.
BroadR-Reach technology supports both 100-meter traditional Ethernet
services and other applications that require longer than 100-meter reach
or operation over a single twisted wire pair (such as FTTC/FFTB in
MTU/MDU and hotels). The extended reach will also broaden the range
of cable installations and CAN be used for new IP services and
applications such as Broadband access, voice over IP, Wireless access
points, and surveillance cameras.
In contrast to previous technologies that extended the range of Ethernet
over twisted pair, Broadcom’s new approach enables every
BroadR-Reach port to also support IEEE 802.3-compliant technologies
such as 10BASE-T and 100BASE-TX. As a result, BroadR-Reach
guarantees interoperability and connectivity to standard
10/100BASE-TX devices, over distances up to 100 meters, while
extending 10/100 operations over one, two, or four pairs of UTP cable up
to 1000m, depending on the quality of the cable and number of pairs
used. By Broadcom Corp.
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