BCM8228
®
VARIRATE™ MULTI-RATE TRANSCEIVER WITH SONET RATE
ADAPTATION AND PM
FEATURES
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Highly integrated rate adaptation device that maps a single STS-3/
STM-1 or a single STS-12/STM-4 stream into STS-48/STM-16 frames
Channel Add/Channel Extract functionality for mapping and
extracting lower SONET rates
Fully integrated serial clock and data recovery (CDR) 155-Mbps/622-
Mbps/2.488-Gbps SONET/SDH transceiver
Retiming functionality for GbE(SGMII)/FC(CML)/2xFC(CML)/
ESCON(CML)/FICON(CML) rates
Retiming functionality for STS-3/STM-1, STS-12/STM-4 and STS-48/
STM-16 rates (CML)
MUX/DEMUX functionality for STS-3/STM-1, STS-12/STM-4, and
STS-48/STM-16 rates (4-bit LVDS)
MUX/DEMUX functionality for GbE (TBI)/ESCON (10-bit)/FICON
(10-bit)
Pass-through functionality for other rates (DVB, HDTV etc.)
Performance Monitoring (PM) for SONET with optional Section
overhead insertion
Redundant receive inputs and transmit outputs to facilitate protection
switching designs
2-wire/4-wire serial interface for register access and PM count retrieval
Powers down unused blocks via register access
PRBS generators and detectors for inbound/outbound SONET and
inbound/outbound GbE
Polarity reversal for differential signals (low and high speed)
Bit order swapping for parallel bus (4-bit and 10-bit)
Exceeds SONET requirements for jitter generation, jitter transfer, and
jitter tolerance
Core supply: 1.8V
I/O power supplies: CML at 1.8V, CMOS at 1.8V or 3.3V
Low power consumption ~1.1W
Standard CMOS process in 196-pin BGA package
SUMMARY OF BENEFITS
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Compliant with Optical Internetworking Forum (OIF),
Telcordia, ITU-T, and IEEE 802.3 standards
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Reduces design cycle and time to market
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Enables new multirate and multiservice features while
retaining existing architectures
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Integrated performance monitoring ensures higher reliability
without sacrificing cost or real estate
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High level of integration allows for higher port density
solutions
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Bit order swap allows for ease of PCB design
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Uses the most effective silicon economy of scale for CMOS-
based devices
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Low power consumption eliminates the need for external
cooling sources
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Target Applications
- Multiservice platforms
- Multiple rate SONET/SDH transmission equipment
- SONET/SDH/GbE/FC Multiservice boxes
- ADD/DROP Multiplexers
- Optical and Digital cross-connects
- SONET test equipment
- Terabit routers
- Edge routers
- Repeaters
BCM8228 Application Diagram
BCM8228
Optical
Module
Optical
Module
BCM8228
Framer
or ASIC
BCM8228
Framer
or ASIC
Optical
Module
Optical
Module
BCM8228
OVERVIEW
RCK4O
Div4
4
IB OC3/12
to STS48
Mapper
16
16x5
FIFO
16:4
MUX
Out
Reg
LVDS 4-BIT
OUTPUT
1:4
DMUX
SONET/
GE
CDR
High-Speed
Serial Input
lock_det
10:1
MUX
1:10
DMUX
8b10
ERROR
DETECT
TBI
Reg
Wptr
4:1
DMUX
4x9
FIFO
Rptr
Div4
4
TCK4I
OB STS48 16
to OC3/12
4:16
Mapper
DMUX
In
Reg
LOA
Det
LVDS 4-BIT
INPUT
High-Speed
Serial Input
Reg
Par
to
Ser
Wptr
10x5
FIFO
Div10
Rptr
SONET/
GE
CDR
ser to
par
Div 4
ser to
par
Div 10
1-BIT INPUT
8b10b
Error
Detect
TBI
In
Reg
The
BCM8228
VariRate™ device is a highly integrated variable-rate
transceiver/mapper operating at STS-48/12/3, GbE, FC/2xFC (Fibre
Channel), ESCON, and FICON data rates. The device has an integrated
serial clock and data recovery (CDR) circuit, loss-of-signal (LOS)
detection circuitry as well as an advanced feature set including
performance monitoring and a serial interface (2-wire or 4-wire) for
register access. The
BCM8228
provides high-jitter tolerance and low-
jitter generation to comply with Optical Internetworking Forum (OIF),
IEEE 802.3, Telcordia, ANSI, and ITU-T standards.
The
BCM8228
reference clock input frequency is user-selectable to the
line rate divided by either 16 or 10. It can be powered with a single 1.8V
supply or dual 1.8/3.3V supply without any special power supply
sequencing requirements. Power consumption of the device is typically
1.1W. The power-down control register turns off any unused blocks.
The
BCM8228
is packaged in a 15 x 15 mm, 196-pin BGA.
Broadcom
®
, the pulse logo, and
Connecting everything
®
are trademarks of Broadcom Corporation and/
or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the
property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2004 by BROADCOM CORPORATION. All rights reserved.
8228-PB04-R
02/10/04
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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