BCM5481
®
10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
FEATURES
•
Fully integrated 10BASE-T/100BASE-TX/1000BASE-T Gigabit
Ethernet transceiver
•
GMII, RGMII, 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
-
Advanced power management
•
Trace matched output impedance
•
Line-side loopback
•
Low electromagnetic interference (EMI) emissions
•
Cable-plant diagnostics
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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 10 KB
•
IEEE 1149.1 (JTAG) boundary scan
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64-pin MLP, 68-pin MLP, 100-pin FBGA, and 100-pin QFP
packages
SUMMARY OF BENEFITS
•
Simplifies system and board design.
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Reduced I/O pin requirements with RGMII (over 50%).
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On-chip RGMII timing delay
•
Provides interoperability with IEEE standard devices
operating at 10 Mbps, 100 Mbps, and 1000 Mbps at half- and
full-duplex.
•
Lowers system bill of materials (BOM) cost and simplifies
system design.
•
Requires no airflow or heatsink.
•
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.
-
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.
Trans forme r
BCM5481
Transformer
Trans forme r
BCM5645
MAC
BCM5481
RJ-45
24F E +2G
S witch
BCM5481
BCM5248
Oc tal
10/100 Mbps P HY
BCM5248
Oc tal
10/100 Mbps P HY
BCM5248
Oc tal
10/100 Mbps P HY
General Gigabit Ethernet Connectivity
1000BASE-T Gigabit Uplink
R J -45
R J -45