bcm5481 Broadcom Corp., bcm5481 Datasheet
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bcm5481
Manufacturer Part Number
bcm5481
Description
Bcm5481 - 10/100/1000base-t Gigabit Copper Transceiver
Manufacturer
Broadcom Corp.
Datasheet
1.BCM5481.pdf
(2 pages)
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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
Trace matched output impedance
Line-side loopback
Low electromagnetic interference (EMI) emissions
Cable-plant diagnostics
Robust CESD tolerance
Support for jumbo packets up to 10 KB
IEEE 1149.1 (JTAG) boundary scan
64-pin MLP, 68-pin MLP, 100-pin FBGA, and 100-pin QFP
packages
General Gigabit Ethernet Connectivity
- Less than 700 mW per port
- Advanced power management
- Cable plant analyzer function detects cable plant impairments
- Link quality indication LED
- Automatic detection and correction of wiring pair swaps, pair
- Automatic MDI/MDIX crossover at all speeds
10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
skew, and pair polarity
F E A T U R E S
®
BCM5481
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Simplifies system and board design.
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.
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.
- Reduced I/O pin requirements with RGMII (over 50%).
- On-chip RGMII timing delay
- Prevents erroneous equipment return due to bad cable
- Prevents manufacturing fall-out due to bad cable plants.
S U M M A R Y O F B E N E F I T S
plants.
10/100 Mbps P HY
Oc tal
1000BASE-T Gigabit Uplink
24F E +2G
S witch
10/100 Mbps P HY
Oc tal
10/100 Mbps P HY
Oc tal
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bcm5481 Summary of contents
Page 1
... IEEE 1149.1 (JTAG) boundary scan • 64-pin MLP, 68-pin MLP, 100-pin FBGA, and 100-pin QFP packages General Gigabit Ethernet Connectivity BCM5481 • Simplifies system and board design. - Reduced I/O pin requirements with RGMII (over 50%). ...
Page 2
... IEEE requirements for Echo, NEXT, and FEXT. Low power is a key factor in implementing Gigabit small form factor NICs and uplinks and, at less than 700 mW per port, the BCM5481 has the industry's lowest power. Also, the BCM5481 has extremely low EMI emissions, which reduces the design constraints required to meet EMI emissions specifications ...