BCM8228
®
VARIRATE™ MULTI-RATE TRANSCEIVER WITH SONET RATE
ADAPTATION AND PM
BCM8228 Application Diagram
•
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
Compliant with Optical Internetworking Forum (OIF),
Telcordia, ITU-T, and IEEE 802.3 standards
Reduces design cycle and time to market
Enables new multirate and multiservice features while
retaining existing architectures
Integrated performance monitoring ensures higher reliability
without sacrificing cost or real estate
High level of integration allows for higher port density
solutions
Bit order swap allows for ease of PCB design
Uses the most effective silicon economy of scale for CMOS-
based devices
Low power consumption eliminates the need for external
cooling sources
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
FEATURES SUMMARY OF BENEFITS
Framer
or ASIC
Framer
or ASIC
Optical
Module
Optical
Module
BCM8228BCM8228
Optical
Module
BCM8228BCM8228
Optical
Module