bcm54981 Broadcom Corp., bcm54981 Datasheet

bcm54981

Manufacturer Part Number

bcm54981

Description

Bcm54981 - Octal-port 10/100/1000base-t Gigabit Copper Transceiver With Remote Phy

Manufacturer

Broadcom Corp.

Datasheet

1.BCM54981.pdf (2 pages)

Current page: 1 of 2
Download datasheet (91Kb)

OCTAL-PORT 10/100/1000BASE-T GIGABIT ETHERNET TRANSCEIVER

•

Eight 10BASE-T/100BASE-TX/1000BASE-T Gigabit

Ethernet transceiver in a fully integrated 90 nm CMOS single

chip

Fully compliant with IEEE 802.3™, IEEE 802.3u, and

IEEE 802.3ab standards

Low power: 500 mW per port

SGMII and SerDes MAC interface options

Supports 10/100/1000BASE-T and 100BASE-FX on copper

interface

Internal 100Ω Twisted Pair termination resistors

Reverse MDI capability

Enhanced LED driver modes

Line-side loopback

Low electromagnetic interference (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

Ethernet@Wirespeed™ and Super-Isolate mode support

Remote PHY management capability allows PHY register

access through SGMII interface without the need of MDIO/

MDC.

F E A T U R E S

BCM54981 System Diagram

BCM54981

10/100/1000BASE-T

Gigabit Ethernet

BCM54981

•

Transceiver

BCM54981

Energy efficient, low-cost, and low-power octal-port

integration enables single-row, high-port density switches

Provides compatibility with IEEE standard devices operating

at 10 Mbps, 100 Mbps, and 1000 Mbps at half-duplex and full-

duplex

Low-cost solution for unmanaged switch applications

Lowers system bill of materials (BOM) cost and simplifies

system design

Eases system level debug

Internal 100Ω Twisted Pair termination resistors eliminate

the need for external resistors. Saving eight resistors per port.

Ability to reverse MDI, which results in ease of board design

and simplifies the layout in high-port density switch designs.

Enables use of low-cost magnetics, even in high-density (48+)

designs

CableChecker characterizes cable plant condition and

immediately indicates cabling issues

Operates with larger packets for wider range of packet-

protocol support and improved efficiency

Ease of manufacturing with JTAG support, simplified power

supply, and multiple MAC interfaces

- CableChecker detection of cable plant impairments

- Prevents erroneous equipment return due to bad cable

- Prevents manufacturing fallout due to bad cable plants

S U M M A R Y O F B E N E F I T S

plants

Related parts for bcm54981

bcm54981 Summary of contents

Page 1

... Prevents manufacturing fallout due to bad cable plants • Operates with larger packets for wider range of packet- protocol support and improved efficiency • Ease of manufacturing with JTAG support, simplified power supply, and multiple MAC interfaces BCM54981 System Diagram BCM54981 BCM54981 10/100/1000BASE-T Gigabit Ethernet Transceiver ...

Page 2

... Low power is the key to implementing high-density Gigabit Ethernet switches, and at less than 500 mW per port the BCM54981 has the smallest footprint and lowest power in the industry. In addition, the BCM54981 has extremely low EMI emissions, which reduces the design constraints required to meet EMI radiation specifications ...

Related keywords

bcm54981 datasheet
bcm54981 data sheet
bcm54981 pdf datasheet
bcm54981 component
bcm54981 part
bcm54981 distributor
bcm54981 RoHS
bcm54981 datasheet download