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