Broadcom 2.488/2.667-Gb/s SONET/SDH Transceiver - BCM8220
The world's lowest-power, highest-integrated and smallest OC-48 SONET transceiver chip. The BCM8220 requires only one-fourth the power dissipation of competitive solutions. It is also the world's first OC-48 transceiver to feature a pin-efficient, four-bit, 622.08 Mb/s LVDS interface, which is the preferred interface standard for next-generation SONET equipment.
The BCM8220 FEC-capable (forward error correction), SONET/SDH transceiver is a fully integrated, SONET OC-48 (2.488/2.667 Gb/s) interface serialization/deserialization device with an integrated clock multiplication unit (CMU) and integrated clock and data recovery (CDR) circuit. Output frequency is selectable at 2.488 Gb/s or 2.667 Gb/s, allowing the user to use the FEC capability. On-chip clock synthesis is performed by the high-frequency, low-jitter, phase-locked loop on the BCM8220 transceiver chip, allowing the use of slower 77.76/155.52 MHz (83.35/166.71 MHz) external transmit clock references.
Features
- OC-48/STM-16 SONET/SDH transceiver
- Selectable full-duplex transmission between standard rate of 2.488 Gb/s or Forward Error Correction rate of 2.667 Gb/s
- Single-chip integrated solution containing multiplexer (Mux), clock multiplication unit (CMU), demultiplexer (Demux) and clock data recovery (CDR) functions
Applications
- Add/Drop Multiplexers
- ATM Switch Backbones
- EDGE and Terabit Routers
- Digital Cross Connects
- Network Interface Cards (NICs)
- Hubs/Repeaters
- Transmission Equipment
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