BCM5461
®
10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
FEATURES
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Fully-integrated 10BASE-T/100BASE-TX/1000BASE-T Gigabit
Ethernet transceiver
GMII, RGMII, RTBI, and MII MAC Interface options
On-chip low-voltage regulators
Fully compliant with IEEE 802.3, 802.3u, and 802.3ab standards
0.13µ CMOS—low power and cost
Low power
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Less than 700 mW per port
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Wake on LAN support
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Advanced power management
Trace matched output impedance
Line-side loopback
Low EMI emissions
Cable-plant diagnostic
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Cable-plant analyzer function detects cable plant impairments
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Link quality indication LED
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Automatic detection and correction of wiring pair swaps, pair skew,
and pair polarity
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Automatic MDI/MDIX crossover at all speeds
Robust CESD tolerance
Support for jumbo packets up to 9 KB
IEEE 1149.1 (JTAG) boundary scan
128-pin MQFP, 117-pin BGA, and 100-pin FBGA packages
SUMMARY OF BENEFITS
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Simplifies system and board design.
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Reduced I/O pin requirements with RGMII (over 50%).
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Clock timing can be adjusted to eliminate board trace delays
required by the RGMII specification.
Provides interoperability with IEEE standard devices operating at 10,
100, and 1000 Mbps at half- and full-duplex.
Lowers system BOM cost and simplifies system design.
Requires no airflow or heatsink.
Provides compliance with PCI 2.2 and PC99/PC2000.
Eases system level debug.
Reduces system design constraints to meet EMI emissions standards.
Cable diagnostic function characterizes cable plant condition and
immediately indicates cabling issues.
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Prevents erroneous equipment return due to bad cable plants.
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Prevents manufacturing fall-out due to bad cable plants.
High CESD tolerance prevents equipment damage and return.
Operates with larger packets for wider range of packet protocol
support and improved efficiency.
Ease of manufacturing with JTAG support, simplified power supply,
and multiple MAC interfaces.
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Transformer
RJ-45
Main Control Board
Peripheral Board #1
Peripheral Board #2
BCM5464
BCM5461
BCM5645
24FE+2G
Switch
Transformer
RJ-45
BCM5461
BCM5461
BCM5461
BCM5248
Octal
10/100 Mbps PHY
BCM5248
Octal
10/100 Mbps PHY
BCM5248
Octal
10/100 Mbps PHY
Gigabit Backplane Communication
1000BASE-T Gigabit Uplink
BOARDCOM [ Broadcom Corporation. ]
