BCM8021
®
10-GbE XAUI™ TRANSCEIVER WITH HIGH-SPEED REDUNDANCY
FEATURES
SUMMARY OF BENEFITS
•
10-GbE transceiver supporting various operating modes
•
•
•
•
IEEE 802.3™ae-compliant XAUI™ to XGMII transceiver
•
XAUI-to-XAUI retiming
Low power dissipation
•
Less than 300 mW per transceiver channel including I/O
SONET/SDH-quality jitter performance
•
Less than three picoseconds rms jitter generation
•
Exceeds SONET jitter tolerance mask
High performance programmable receive equalization and
transmit pre-emphasis
•
Transmit pre-emphasis for interoperability with CML SerDes
•
Receive equalization for copper interconnects
Enhanced test capability
•
Full loopback and on-chip PRBS generator/checker
•
IEEE (1149.1) JTAG
Compact 21-mm × 21-mm BGA package
•
No requirement for heat sink or airflow
•
Advanced 0.13µ CMOS process technology provides
unparalleled performance while achieving the lowest possible
power consumption
•
IEEE 802.3ae 10-GbE physical coding sublayer (PCS) has a
selectable 8B/10B encoding/decoding block on-chip that can
be configured to support the 10-Gbps attachment unit
interface (XAUI)
•
Superior jitter characteristics enable the serializing/
deserializing (SerDes) of data signals transmitted through
front panel or backplane networking equipment supporting
both primary and protection circuits
•
•
•
Drive PMD devices or backplane directly with no external
clean-up circuit required
•
Simplifies manufacturability with integrated built-in self-test
(BIST), high-speed and low-speed loopbacks, and
programmable PRBS generator/checker
•
Decreases complexity and reduces board space on
multichannel linecard designs
APPLICATIONS
APPLICATIONS
•
1-GbE and 10-GbE LAN, MAN, WAN switches and routers
•
Advanced test equipment (ATE)
XAUI SerDes Application Diagram
OVERVIEW
BCM8021 Block Diagram
The BCM8021 device integrates XAUI serializer/deserializer (SerDes)
channels 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 SerDes
solution for network line-card and backplane applications.
An internal MUX connects the parallel and serial ports to enable fully
redundant operation. The MUX enables an active serial link to be
switched to the parallel interface, while a protection serial link can be
continuously monitored to insure its condition. If the active link fails, the
protection link can be muxed over through external control to the parallel
interface.
On the parallel side of the device, transmitters and receivers interface
with a 32-bit wide data (XGMII) along with the clock and control
signals. The low-speed I/O supports HSTL (1.5V or 1.8V) or SSTL_2
(2.5V) interfaces.
On the serial side of the device, transmitters and receivers support XAUI
serial transmission rates. An on-chip phase lock loop (PLL) synthesizes
the supplied reference clock to support the desired transmit rate, while
vlock and data recovery (CDR) units recover the receive rate clock for
timing.
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.
Highly programmable test capabilities exist within the device to support
high-speed and low-speed loopback using generators/checkers that
support PRBS 27 to 231 patterns along with IEEE802.3ae-defined test
patterns. 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
© 2006 by BROADCOM CORPORATION. All rights reserved.
8021-PB04-R
04/14/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
DIY/开源硬件专区
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
