BCM5705
®
10/100/1000BASE-T CONTROLLER WITH INTEGRATED TRANSCEIVER
SUMMARY OF BENEFITS
FEATURES
• Single-chip device for desktop LAN on Motherboard (LOM)
or Network Interface Card (NIC) applications
• Integrated 10/100/1000BASE-T transceiver
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10/100/1000BASE-T triple-speed MAC
PCI v2.2, 32-bit/33-MHz host interface
High-speed RISC core with 24 KB caches
SMBus 2.0 controller
On-chip power circuit controller and Wake-on-LAN power
switching circuit
• Advanced power management—ACPI compliance
• Performance features
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TCP, IP, and UDP checksum
Microsoft® large send
TCP segmentation
CPU task offload
Adaptive interrupts
• Robust manageability
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Wake-on-LAN
Out-of-Box mode Wake-on-LAN
PXE 2.0 remote boot
Alert Standard Format (ASF) 1.0 support
Statistic gathering (SNMP MIB II, Ethernet-like MIB, and
Ethernet MIB [802.3x, clause 30])
• Comprehensive diagnostic and configuration software suite
• ACPI 1.1a complaint—multiple power modes
• Advanced network features
• Virtual LANs—802.1q VLAN tagging that supports 64
VLANs
• 802.3x flow control
• Cable analyzer features detect cabling problems
• 3.3V I/Os (5V tolerant)
• JTAG
• Industry’s smallest 10/100/1000 MAC+PHY solution
• Optimized for desktop LOM and NIC applications
• Enables small form factor PCs
• Ultralow power for small form factor PCs
• 0.13µ CMOS design allows industry’s lowest power
• Advanced power management
• Enables desktop PC products for all segments—allows one
board layout for both Gigabit and Fast Ethernet applications
• Completely backward compatible, with existing:
• 10/100 network infrastructure
• PCI-based desktop and mobile platforms
• Future-proof with flexible firmware architecture
• Flexible firmware adapts to changing standards
• Wirespeed custom packet filtering via onboard CPUs
• Power optimized through reduced CPU utilization
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Adaptive interrupts minimize calls to the PC’s CPU
TCP/IP offloads reduce CPU burden significantly
Reduces power consumption of PC processor
Allows use of lower power/performance PC processor
• Cable analyzer tests for network cable issues
• Customers can field-test using self-diagnostics
• Dramatically reduces customer calls, returns, and costs.
• Robust and highly manageable
• PXE 2.0, ACPI 1.1, Wake-on-LAN
• Integrated cable testing—link quality, length, pair skew, pair
polarity, and pair swap
• Flexible ASF 1.0
• Space savings for LOM
• 196-pin HBGA package
• No external memory
• Integrated power circuitry reduces BOM costs
OVERVIEW
10/100/1000
MAC
RX
Buffer
Memory
10/100/1000
PHY
TX
Memory
Controller
Processor
PCI
25 MHz
PLL
PCI
Bus
Memory
LED Control
SMBus
EEPROM
Control
LED Signals
SMB Interface
EEPROM Interface
The BCM5705 is a fully integrated 10/100/1000BASE-T Gigabit
Ethernet media access control and physical layer transceiver solution for
high-performance network applications. The BCM5705 combines a
triple-speed, IEEE 802.3™ compliant Media Access Controller (MAC),
a PCI bus interface, an on-chip buffer memory, and an integrated
physical layer transceiver in a single device. The BCM5705 is fabricated
in a low-voltage 0.13µ CMOS process, providing an ultralow power
solution. By itself, the BCM5705 provides a complete single-chip
Gigabit Ethernet NIC or LOM solution.
The BCM5705 includes a 10/100/1000-Mbps Ethernet MAC with full-/
half-duplex capability at all speeds. Support for the following 802.3
functions is featured in the MAC:
• VLAN tagging
• Layer 2 priority encoding
• Link aggregation
• Full-duplex flow control
The device provides a PCI v2.2 bus interface and integrated on-chip
buffer memory for a stand-alone operation. An embedded highperformance processor enables custom frame processing features,
including TCP segmentation.
PLL
PCI
Clk
enhancements are included to make the device even more user-friendly.
A unique integrated cable analyzer feature allows a user to self-diagnose
any issues with the network cabling that could affect the host machine.
A link quality indicator LED and a GUI application give installers an
instant visual indication of problems, which include physical wiring
defects or channel conditions, such as excessive cable length, return loss,
crosstalk, echo, and noise.
Broadcom’s remote cable management and diagnostics software can be
used with the device to provide remote management of the cable and a
first level of diagnostics and fault isolation. The BCM5705 continually
monitors various channel conditions. The optional wirespeed capability
allows the BCM5705 to force auto-negotiation to be automatically
limited by the speed that the channel can reliably support rather than the
performance of the end equipment.
Target Applications of the BCM5705
• Desktop PC NIC
• Desktop PC LOM
Software Drivers Available
• Windows® 98, NT, 2000, XP
• Linux® 2.2, 2.4
The transceiver is fully compatible with the IEEE 802.3 standard for
auto-negotiation of speed. Additionally, several Plug and Play
Broadcom®, the pulse logo, Connecting everything®, and the Connecting everything logo are among
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
®
BROADCOM CORPORATION
5300 California Avenue
Irvine, California 92617
© 2009 by BROADCOM CORPORATION. All rights reserved.
5705-PB07-R
04/02/09
Phone: 949-926-5000
Fax: 949-926-5203
E-mail: info@broadcom.com
Web: www.broadcom.com