VSC8115 Datasheet (STS-12/STS-3 Multi Rate Clock and Data Recovery Unit)

Part: VSC8115
Manufacturer: Vitesse Semiconductor
Size: 139.29 KB

VSC8115 Key Features

19.44 MHz reference frequency LVTTL input
Lock Detect output pin monitors data run length
Data is retimed at the output
Active HIGH Signal Detect LVPECL input
Low jitter, high-speed outputs support LVPECL and low-power LVDS
Low power: 188 mW typical
3.3 V power supply
20-pin TSSOP package
Requires one external capacitor
PLL bypass operation facilitates board debug

Related Vitesse Semiconductor Datasheets

Part Number	Description
VSC8111	ATM/SONET/SDH 155/622 Mb/s Transceiver Mux/Demux
VSC8113	ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux
VSC8117	ATM/SONET/SDH 622/155 Mb/s Transceiver Mux/Demux
VSC8122	Multi-Rate SONET/SDH Clock and Data Recovery IC
VSC8124	Target Specification

VSC8115 Description

The VSC8115 functions as a clock and data recovery (CDR) unit for SONET/SDH-based equipment to derive highspeed timing signals. The VSC8115 recovers the clock from the scrambled non-return to zero (NRZ) data operating at 622.08 Mbps (STS-12/OC-12/STM-4) or 155.52 Mbps (STS-3/OC-3/STM-1). After the clock is recovered, the data is retimed using an output flip-flop.