BCM5208R
®
BCM5208R 10/100BASE-TX QUAD-F™ TRANSCEIVER
FEATURES
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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
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Fully integrated TX quad PHY transceiver (MII to TX
magnetics optics)
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Decreases system cost per port
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Simplifies system and board design
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Reduces power consumption
On-chip multimode transmit wave shaping
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Eliminates need for external filters
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Minimizes EMI
Flexible Ethernet PHY solution
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10BASE-T, 100BASE-TX full-duplex
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Suited for Ethernet switch products
Digital adaptive equalization and clock recovery
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Increases SNR by 3 dB over ideal analog equalizers
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Robust performance in harsh noise environments and over
substandard cable
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Immune to on-chip noise and crosstalk
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Insensitive to variations in process, temperature, and voltage
Cost reduction for BCM5208 designs
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MAC
BCM5208R
10/100BASE-TX
QUAD-Φ
TM
Transceiver
MAC
MAC
MAC
Switching
Engine
Switch Module
MP
MAC
Memory
Logic
BCM5208R
10/100BASE-TX
QUAD-Φ
TM
Transceiver
MAC
MAC
MAC
24-Port 10/100BASE-T Ethernet Switch Example