BCM5226
®
10/100BASE-TX/FX HEX-Φ™ TRANSCEIVER
FEATURES
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Single-chip six-port Fast Ethernet transceiver
HP Auto-MDIX
Low-power 2.5V CMOS technology
Compatible with 2.5V I/O and 3.3V I/O
Reduced Media Independent Interface (RMII)
Serial Media Independent Interface (SMII)
Fully integrated digital adaptive equalization
On-chip multimode transmit waveshaping
Edge-rate control eliminates external filters
Integrated baseline wander correction
Full-duplex support
Twisted-pair or fiber support on any or all ports
Interrupt output capability
Loopback mode for diagnostics
160-pin PQFP (BCM5226R)
128-pin PQFP (BCM5226S)
Proven Broadcom proprietary DSP Digi-Φ™ architecture
SUMMARY OF BENEFITS
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Target usage: Fast Ethernet switches.
Low power < 300 milliwatts per port.
Auto-MDIX detects and corrects cabling errors.
Provides robust performance over a broad range of operating
conditions.
Single-chip device contains six independent Fast Ethernet
transceivers.
Performs all physical layer interface functions for 100BASE-
TX full-duplex or half-duplex Ethernet on Category 5 twisted-
pair cable and 10BASE-T full- or half-duplex Ethernet on
Category 3, 4, or 5 cable.
Permits transmission over fiber-optic cabling when paired
with an external fiber-optic transceiver.
Compliant with IEEE 802.3 standard.
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IEEE 1149.1 (JTAG) scan chain support.
Quad BCM5208 Versus HEX BCM5226 Comparison
6 Active PHY components
+ 6 MACs including switch fabric
4 Active SMII PHY components
+ SMII MACs embedded in switch chip
Switch Fabric and System Logic
QUAD MAC
QUAD MAC
Switch Fabric with Embedded MACs
24x16=384 MII Pins
24x2=48 SMII Pins
BCM5208
Port 1
BCM5208
Port 24
BCM5226
Port 1
BCM5226
BCM5226
BCM5226
Port 24
BOARDCOM [ Broadcom Corporation. ]
