BOARDCOM BCM5226 10/100 base tx/fx hex transceiver Datasheet

BCM5226
PRODUCT
Brief
®
1 0 / 1 0 0 B A S E - T X / F X H E X - Φ™ T R A N S C E I V E R
B C M 5 2 2 6
F E AT U R E S
• 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™
S U M M A R Y
O F
B E N E F I T S
• 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.
• IEEE 1149.1 (JTAG) scan chain support.
architecture
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
Switch Fabric with Embedded MACs
QUAD MAC
QUAD MAC
24x16=384 MII Pins
24x2=48 SMII Pins
BCM5208
Port 1
BCM5208
Port 24
BCM5226
Port 1
BCM5226
BCM5226
BCM5226
Port 24
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