BCM8220

Features:

* OC-48/STM-16 SONET/SDH transceiver
* Selectable full-duplex transmission between standard rate of 2.488 Gbps or Forward Error Correction rate of 2.667 Gbps.
* Single-chip, integrated solution containing multiplexer (Mux),clock multiplication unit (CMU), demultiplexer (Demux), and clock data recovery (CDR) functions.
* 4-bit, 622.08/666.84-MHz, LVDS system interface
* Both line and system loopback modes
* Additional diagnostic features include lock detect and loss of signal.
* Meets SONET/SDH jitter requirements
* Low power dissipation of 550 mW typical
* Operates at 1.8V
* 1.8V or 3.3V CMOS I/O interface
* Standard CMOS fabrication process
* Two packages offered:
* 100-pin QFP package, 14 mm 14 mm 1.4 mm
* 100-pin BGA package, 11 mm 11 mm 1.71 mm




Application

* OC-48/STM-16 transmission Equipment
* SONET/SDH optical modules
* ADD/DROP multiplexers
* Digital cross-connects
* ATM switch backbones
* Terabit and edge routers
* DWDM systems




Description

The BCM8220 FEC-capable (Forward Error Correction), SONET/SDH transceiver is a fully integrated, SONET OC-48 (2.488/2.667 Gbps) interface serialization/deserialization device with an integrated clock multiplication unit (CMU) and integrated clock and data recovery (CDR) circuit. Output frequency of BCM8220 is selectable at 2.488 Gbps or 2.667 Gbps, allowing the user to use the FEC capability.

On-chip clock synthesis of BCM8220 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.