BCM5238 Ver la hoja de datos (PDF) - Broadcom Corporation
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BCM5238 Datasheet PDF : 2 Pages
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BCM5238
®
10/100BASE-TX OCTAL-Φ™ TRANSCEIVER
FEATURES
• Single-chip, eight-port Fast Ethernet transceiver
• Low-power 1.8V CMOS technology
• Serial Media Independent Interface (SMII)
• Source Synchronous SMII (SSSMII)
• HP Auto-MDIX automatic crossover
• Supports 10BASE-T Polarity Correction
• Compatible with 2.5V I/O and 3.3V I/O
• Fully integrated digital adaptive equalization
• Up to 150 meters of error-free operation
• Full-duplex support
• Interrupt output capability
• 128-pin PQFP or 256-ball BGA package
• Proven Broadcom proprietary all-DSP Digi-Φ™ architecture
SUMMARY OF BENEFITS
• Target usage: Fast Ethernet switches.
• Lowest per port power solution available:< 215 milliwatts per
port.
• Smallest footprint per port available.
• Measures 14 mm ∞20 mm for eight ports.
• Single-chip device contains eight independent Fast Ethernet
transceivers.
• Performs all physical layer interface functions for 100BASE-
TX full-duplex or half-duplex Ethernet on Category 5
unshielded twisted-pair (UTP) cable and 10BASE-T full or
half-duplex Ethernet on Category 3, 4, or 5 UTP cable.
• Compliant with IEEE 802.3 standard.
• IEEE 1149.1 (JTAG) scan chain support.
• Two LED indicator pins per port.
BCM5421
Gigabit
PHY
BCM5421
Gigabit
PHY
BCM5238
OCTAL-Φ
Quad
Magnetics
Quad
Magnetics
BCM5238
OCTAL-Φ
Quad
Magnetics
Quad
Magnetics
BCM5238
OCTAL-Φ
Quad
Magnetics
Quad
Magnetics
24-Port 10/100BASE-T Ethernet Switch Example
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