BCM5248
®
10/100BASE-TX OCTAL-Φ™ TRANSCEIVER
FEATURES
•
Eight-port 10BASE-T/100BASE-TX/100BASE-FX
transceiver
SUMMARY OF BENEFITS
•
Target usage: Fast Ethernet switches.
•
Low-power dual-supply 2.5V/1.8V CMOS technology.
•
Smallest footprint per port available.
•
Measures 14 mm x 20 mm for eight ports.
•
Single-chip device contains eight independent Fast Ethernet
transceivers.
•
HP Auto-MDIX automatically uncrosses cable pairs
•
Advanced CableChecker™ cable diagnostics software
diagnoses and pinpoints cable faults to reduce supports calls
•
Optimized for use with Broadcom's StrataSwitch™ Family
•
Cost effective process technology: 0.18u CMOS
•
Serial Media Independent Interface (SMII) and Source
Synchronous SMII (SSSMII)
•
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-duplex or
half-duplex Ethernet on category 3, 4, or 5 UTP cable, and
100BASE-FX full-duplex or half-duplex on fiber optic cable.
•
Fully programmable LED drivers and serial LED output
•
Low power: 200 mW per port
•
Low-voltage core: 1.8V
•
QFP or BGA package options
•
Most widely deployed and reliable PHY architecture: Over a
billion Broad-Φ™ ports shipped
•
Compliant with IEEE 802.3 standard.
•
IEEE 1149.1 (JTAG) scan chain support.
•
Fully customizable LED functions. Up to 8 LED signals per
port.
24-Port 10/100BASE-T Ethernet Switch Example
STRATASWITCH
BCM5461
Gigabit
PHY
GMII
EPIC
SMII
EPIC
SMII
EPIC
SMII
GMII
BCM5461
Gigabit
PHY
BCM5248
OCTAL-
BCM5248
OCTAL-
BCM5248
OCTAL-
Quad
Magnetics
Quad
Magnetics
Quad
Magnetics
Quad
Magnetics
Quad
Magnetics
Quad
Magnetics
RJ45 Stacked 2x6
RJ45 Stacked 2x6
BOARDCOM [ Broadcom Corporation. ]
