鈥?/div>
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
鈥?/div>
Provides increased port density per board and system.
鈥?/div>
Features low jitter: 3 mUI
RMS
typical.
鈥?/div>
CMOS-based device uses the most effective silicon economy of
scale.
鈥?/div>
Exceeds SONET jitter requirements, which allows the use of
low-cost optics.
鈥?/div>
Target applications:
鈥?/div>
OC-48/STM-16 transmission equipment
鈥?/div>
SONET/SDH optical modules
鈥?/div>
ADD/DROP multiplexers
鈥?/div>
Digital cross-connects
鈥?/div>
ATM switch backboneONET/SDH test equipment
鈥?/div>
SONET/SDH test equipment
鈥?/div>
Terabit and edge routers
Selectable divide-by-32 or divide-by-16 receiver/ transmitter
low-speed parallel output clock
鈥?/div>
Standard CMOS fabrication process
鈥?/div>
23 樓 23 mm, 208-pin BGA package
Application Block Diagram
16
16
Network Interface
Processor
BCM8212
155.52 Mbps
2.488 Gbps
BCM8212
OTX
ORX
155.52 Mbps
ORX
OTX
16
16
Network Interface
Processor
next
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