PHY 8-CH 100Mbps 10/100BASE Transceiver

The 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, Broad-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.Additionally, BroadR-Reach technology works in Power over Ethernet (PoE)-enabled platforms providing a new generation of IP services and applications such as security camera surveillance.BroadR-Reach technology addresses key issues that affect deployment of IP services in today’s enterprise. For example, since many traditional digital PBX phone systems use twisted pair cables that will not support standard IEEE 802.3 Ethernet PHY technology, BroadR-Reach would be a good solution for migrating to IP-based telephony systems by leveraging the current infrastructure..

• Eight 10BASE-T/100BASE-TX and BROadR-Reach™ transceivers in a single fully integrated 65 nm CMOS chip
• Full duplex operation at the rate of 10 Mbps and 100 Mbps over one, two, and four pair of unshielded twisted pair cable up to 1000m, depending on cable quality.
• Full duplex 100 Mbps and 10 Mbps operation over point-to-point coax cable
• S3MII interface
• Internal 100O twisted pair termination resistors
• Supports 100BASE-FX on copper interface
• Enhanced LED driver modes
• Fully compliant with IEEE 802.3™, IEEE 802.3u, and IEEE 802.3ab standards
• Line-side loopback
• Low EMI emissions
• Hardware-accelerated CableChecker™ diagnostics
• Robust cable-sourced electrostatic discharge (CESD) tolerance
• Support for jumbo packets
• IEEE 1149.1 (JTAG) and 1149.6 (AC-JTAG) boundary scan