BCM5226R データシートの表示（PDF） - Broadcom Corporation

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BCM5226R

10/100BASE-TX/FX HEX-Φ™ TRANSCEIVER

Broadcom Corporation 

BCM5226

PRODUCT

®

Brief

10/100BASE-TX/FX HEX-Φ™ TRANSCEIVER

BCM5226 FEATURES

• 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

• 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.

Quad BCM5208 Versus HEX BCM5226 Comparison

6 Active PHY components

+ 6 MACs including switch fabric

Switch Fabric and System Logic

QUAD MAC

QUAD MAC

24x16=384 MII Pins

BCM5208

Port 1

BCM5208

Port 24

4 Active SMII PHY components

+ SMII MACs embedded in switch chip

Switch Fabric with Embedded MACs

24x2=48 SMII Pins

BCM5226 BCM5226 BCM5226 BCM5226

Port 1

Port 24

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