BCM5208R データシートの表示（PDF） - Broadcom Corporation

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BCM5208R

10/100BASE-TX QUAD-F™ TRANSCEIVER

Broadcom Corporation 

BCM5208R

®

BCM5208R 10/100BASE-TX QUAD-F™ TRANSCEIVER

FEATURES

• 10BASE-T/100BASE-TX IEEE 802.3u-compliant

• Full-duplex support in all modes

• IEEE 802.3u-compliant auto-negotiation

• Media Independent Interface (MII) for each port

• Shared MII serial management interface

• Fully integrated digital adaptive equalizers

• 125-MHz clock generator and timing recovery

• Integrated multimode transmit wave shaping

• Integrated baseline wander correction

• LED status pins

• Loopback mode for diagnostics

• IEEE 1149.1 (JTAG) support

• 3.3V power supply

• 208-pin PQFP package

SUMMARY OF BENEFITS

• Fully integrated TX quad PHY transceiver (MII to TX

magnetics optics)

• Decreases system cost per port

• Simplifies system and board design

• Reduces power consumption

• On-chip multimode transmit wave shaping

• Eliminates need for external filters

• Minimizes EMI

• Flexible Ethernet PHY solution

• 10BASE-T, 100BASE-TX full-duplex

• Suited for Ethernet switch products

• Digital adaptive equalization and clock recovery

• Increases SNR by 3 dB over ideal analog equalizers

• Robust performance in harsh noise environments and over

substandard cable

• Immune to on-chip noise and crosstalk

• Insensitive to variations in process, temperature, and voltage

• Cost reduction for BCM5208 designs

BCM5208R

10/100BASE-TX

QUAD-ΦTM

Transceiver

BCM5208R

10/100BASE-TX

QUAD-ΦTM

Transceiver

MAC

MAC

MAC

MAC

MAC

MAC

MAC

MAC

Switching

Engine

Switch Module

MP Memory

Logic

24-Port 10/100BASE-T Ethernet Switch Example

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