BCM5248 データシートの表示（PDF） - Broadcom Corporation

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BCM5248

10/100BASE-TX OCTAL-Φ™TRANSCEIVER

Broadcom Corporation 

BCM5248

®

10/100BASE-TX OCTAL-Φ™ TRANSCEIVER

FEATURES

• Eight-port 10BASE-T / 100BASE-TX / 100BASE-FX

transceiver

• Cable Auto-CheckTM diagnoses and pinpoints cable faults

• HP Auto-MDIX automatically uncrosses cable pairs

• Advanced cable diagnostics reduce support calls and lower cost

of ownership

• Optimized for use with Broadcom's StrataSwitch TM Family

• Cost-effective process technology: 0.18u CMOS

• Serial Media Independent Interface (SMII) and Source

Synchronous SMII (SSSMII)

• Fully programmable LED drivers and serial LED output

• Low power: 200mW per Port

• Low voltage core: 1.8V

• QFP or BGA package options

• Most widely deployed and reliable PHY architecture: Over

half a billion Digi-PHYTM ports shipped

SUMMARY OF BENEFITS

• Target usage: Fast Ethernet switches.

• Lower power per port: < 2 milliwatts per port.

• Smallest footprint per port available.

• Measures 14 mm x 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, 10BASE-T full or half-

duplex Ethernet on Category 3, 4, or 5 UTP cable, and

100BASE-FX full-duplex or half-duplex on fiber optic cable.

• Compliant with IEEE 802.3 standard.

• IEEE 1149.1 (JTAG) scan chain support.

• Fully customizable LED functions. Up to 8 LED signals per

port.

BCM5461

Gigabit

PHY

BCM5248

OCTAL-Φ

Quad

Magnetics

Quad

Magnetics

BCM5248

OCTAL-Φ

Quad

Magnetics

Quad

Magnetics

BCM5461

Gigabit

PHY

BCM5248

OCTAL-Φ

Quad

Magnetics

Quad

Magnetics

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

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