General Description
The VSC8110 is an ATM/SONET/SDH compatible transceiver integrating high speed clock generation with 8 bit serial-to-parallel and parallel-to-serial data conversion. The high speed clock is generated using an on-chip PLL which is selectable for 155.52 or 622.08 Mhz operation. The part can be used with 19.44, 38.88, 51.84 or 77.76 Mhz external reference clocks. The demultiplexer contains SONET/SDH frame detection and recovery. In addition, the device provides both facility and equipment loopback modes. The part is packaged in a 100PQFP with integrated heat spreader for optimum thermal performance and reduced cost. The VSC8110 provides an integrated solution for ATM physical layers and SONET/SDH systems applications.

FEATUREs
• Integrated PLL for Clock Generation - No External Components
• SONET/SDH Frame Recovery
• Provides Equipment and Facilities Loopback
• Low Power - 1.98 Watts Maximum
• Dual Supply Operation- +2, +5 Volts
• 100 PQFP Package
• Operates at Either STS-3/STM-1 (155.52 Mb/s) or STS-12/STM-4 (622.08 Mb/s) Data Rates
• Compatible with Industry ATM UNI Devices
• On Chip Clock Generation of the 155.52 Mhz or 622.08 Mhz High Speed Clock
• Reference Clock Frequencies Selectable for 19.44, 38.88, 51.84 and 77.76 Mhz
• 8 bit Parallel TTL Interface