BCM8212 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – TRANSCEIVER WITH INTERNAL LOOP TIMING AND PHASE DETECTOR

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 mUI_RMS 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