BCM8704 [BOARDCOM]
QUAD XAUI/CX4/LX4 1.0-3.2-GBPS RETIMER/SWITCH; QUAD XAUI / CX4 / LX4 1.0-3.2 Gbps的重定时器/ SWITCH
| 型号： | BCM8704 |
| 厂家： | 
Broadcom Corporation. |
| 描述： | QUAD XAUI/CX4/LX4 1.0-3.2-GBPS RETIMER/SWITCH |
| 文件： | 总2页 (文件大小：187K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
BCM8040
®
QUAD XAUI™/CX4/LX4 1.0–3.2-GBPS RETIMER/SWITCH
S U M M A R Y O F B E N E F I T S
F E A T U R E S
•
•
Eight independent retimer channels supporting multiple data
rates from 1.0 to 3.2 Gbps, including 1.06 Gbps, 1.25 Gbps,
2.12 Gbps, 2.488 Gbps, 2.5 Gbps, 2.667 Gbps, 3.125 Gbps, and
3.1875 Gbps
• One device supports a variety of applications including Gigabit
Ethernet, 1× and 2× Fibre Channel, OC-48 SONET (with/without
FEC), InfiniBand®, 10-GbE, 10-Gigabit Fibre Channel, or others.
• Flexible architecture supports programmable configurations
enabling an aggregate usable data rate of over 40 Mbps. Built-in
redundancy mode provides high availability to support critical line
side or backplane applications. The high-speed to high-speed
retimer mode extends the use of longer traces on line-card designs.
Multiconfigurable to support various operating modes
•
•
•
Eight independent 1.0- to 3.2-Gbps retiming channels (single
clock domain)
Dual XAUI™/CX4/LX4 to XAUI/CX4/LX4 retiming
channels with redundancy compatible to IEEE802.3™ae
Dual XAUI/CX4/LX4 to XAUI/CX4/LX4 retiming switch
• Advanced 0.13µ CMOS process technology provides unparalleled
performance while achieving the lowest possible power
consumption.
•
•
Low power dissipation
Less than 400 mW per retiming/switch channel including I/O
•
Eases linecard designs to allow for multiple connectors or low-cost
PCB materials such as FR4.
•
•
•
High-performance programmable receive equalization and
transmit pre-emphasis
Drive PMD devices or backplane directly with no external cleanup
circuit required.
•
•
Transmit pre-emphasis for interoperability with CML SerDes
Receive equalization for copper interconnects
Simplifies manufacturability with integrated built-in self-test
(BIST), full loopbacks, and programmable PRBS generator/
checker.
•
•
Enhanced test capability
•
Full loopback, BIST, 10G BERT, and random Ethernet packet
generation
Decreases complexity and reduces board space on multichannel
linecard designs.
•
Compact 23-mm × 23-mm package with no external
components required
A P P L I C A T I O N S
•
No requirement for heat sink or airflow
• 1-GbE and 10-GbE LAN, MAN, WAN switches and routers
1×, 2×, or 10-Gigabit Fibre Channel, InfiniBand, SONET network cards
•
40-Gbps backplanes and backplane extenders
•
• Advanced test equipment (ATE)
Dual Independent XAUI Cross-Link Application Diagram
O V E R V I E W
BCM8040 Block Diagram
The BCM8040 device integrates four independent XGXS (XGMII
transmit rate, while clock and data recovery (CDR) units recover the
receive rate clock for timing. The interface can support single-channel
(octal) or dual-channel quad (XAUI) differential CML I/O.
eXtender sublayer) cores leveraging Broadcom’s high-performance
mixed-signal design experience along with advanced 0.13µ CMOS
process technology. This, combined this with a robust architecture
offering the highest degree of flexibility, results is a highly
programmable, lowest power retimer solution for network line card and
backplane applications.
For high-speed serial copper connections, the device incorporates both
transmit pre-emphasis on the transmit channels and receive equalization
on the receive channels. Transmit pre-emphasis is programmable to
improve the overall cable reach and compensate for electrical
imperfections associated with traces and connectors. Receive
equalization provides optimal performance over a variety of receive
interfaces.
An internal MUX connects each serial channel to enable fully redundant
operation. The MUX enables an active serial link to be switched to the
primary channel, while a protection serial link can be continuously
monitored to insure its condition. If the active link fails, the protection
link can be switched over through external control to ensure continued
system operation.
Highly programmable test capabilities within the device support
loopbacks using generators/checkers that provide PRBS 27 to 231
patterns along with IEEE802.3ae defined test patterns.
Each transmitter and receiver interface supports serial transmissions
rates ranging from 1 Gbps to 3.2 Gbps. An on-chip phase lock loop
(PLL) synthesizes the supplied reference clock to support the desired
A complete evaluation kit, including an evaluation board, related
software, and documentation is available upon request.
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
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
© 2006 by BROADCOM CORPORATION. All rights reserved.
8040-PB06-R
04/14/06
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