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BCM8212 Datasheet, PDF (1/1 Pages) Broadcom Corporation. – TRANSCEIVER WITH INTERNAL LOOP TIMING AND PHASE DETECTOR | |||
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BCM8212
®
TRANSCEIVER WITH INTERNAL LOOP TIMING AND PHASE DETECTOR
FEATURES
SUMMARY OF BENEFITS
⢠2.488-Gbps SONET/SDH transceiver with dual differential
serial I/O
⢠Fully integrated CDR, MUX, DEMUX, and CMU with 16-bit,
155.52-MHz LVPECL interface
⢠On-chip, PLL-based clock generator
⢠Internal phase detector and charge pump for cleanup PLL
⢠Line and system loopback modes
⢠Loss-of-signal output (LOSB) and input (LOSIB)
⢠TX and RX lock detect
⢠Elastic buffering with FIFO overflow alarm
⢠Selectable 77.76/155.52-MHz reference clock
⢠Selectable RX clock and RX data squelch on LOS
⢠Selectable loop timing mode
⢠Dual 2.5V/3.3V supplies
⢠Power dissipation: 1.2W typical
⢠Selectable divide-by-32 or divide-by-16 receiver/ transmitter
low-speed parallel output clock
⢠Standard CMOS fabrication process
⢠23 ¥ 23 mm, 208-pin BGA package
⢠Low power consumption eliminates external heat sinks, fans
for system airflow, and expensive high current power supplies.
⢠Supports SONET dual-fiber ring architecture.8212-PB05-R
⢠High integration reduces design cycle and time to market.
⢠Provides increased port density per board and system.
⢠Features low jitter: 3 mUIRMS typical.
⢠CMOS-based device uses the most effective silicon economy of
scale.
⢠Exceeds SONET jitter requirements, which allows the use of
low-cost optics.
⢠Target applications:
⢠OC-48/STM-16 transmission equipment
⢠SONET/SDH optical modules
⢠ADD/DROP multiplexers
⢠Digital cross-connects
⢠ATM switch backboneONET/SDH test equipment
⢠SONET/SDH test equipment
⢠Terabit and edge routers
Application Block Diagram
16
155.52 Mbps
16
OTX
ORX
2.488 Gbps
ORX
OTX
16
155.52 Mbps
16
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