BCM5238UA3KQMG

BCM5238UA3KQMG Datasheet


BCM5238

Part Datasheet
BCM5238UA3KQMG BCM5238UA3KQMG BCM5238UA3KQMG (pdf)
Related Parts Information
BCM5238BA3KFBG BCM5238BA3KFBG BCM5238BA3KFBG
PDF Datasheet Preview
BCM5238
10/100BASE-TX TRANSCEIVER
• 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 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 standard.
• IEEE JTAG scan chain support.
• Two LED indicator pins per port.

BCM5421 Gigabit PHY

BCM5421 Gigabit PHY

SMII

BCM5238

Quad Magnetics

Quad Magnetics

BCM5238

Quad Magnetics

Quad Magnetics

BCM5238

Quad Magnetics

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

OVERVIEW

TD+/-

RD+/-

RFF_CLK BIAS JTAG

Auto-MDIX

Clock Generator

Bias Generator

JTAG

TAP+BS

Multimode Xmt DAC

Digital Adaptive Equalizer

TXD [3:0] 4

TXEN

TXER
10BASE-T PCS
100BASE-X PCS

COL RXC CRS RXDV

RXER RXD[3:0]

MII to SMII

AutoNegotiation/ Link Integrity
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Datasheet ID: BCM5238UA3KQMG 520205