TRANSPORT PRODUCTS
VSC1235, VSC1236
9.9 to 12.5 Gbps 16:1 Multiplexer with Clock Multiplier Unit and Demultiplexer with Clock Recovery Chip Set
BENEFITS: VSC1235 Full-rate Clock output for use with Clocked Laser Drivers or in RZ Signal Generation Extremely Low Clock-data Skew Clock Outputs can be Disabled to Save Power Integrated PLLs for Superior Jitter Generation and Transfer Performance Flexible Parallel Data Clocking Using Internal PLL VSC1236 A P P L I C AT I O N S : SONET OC-192, SDH STM-64 Systems 10GbE, G.975, G.709 and Proprietary FEC Systems Long Haul / Ultra Long Haul Transmission Systems Line Cards Transponders F E AT U R E S : VSC1235 16:1 Data Multiplexer PLL Based Clock Multiplier Full-rate Clock Outputs PLL Based Parallel Data Clocking Precision Integrated Phase Detectors Selectable Low Phase Noise VCOs Surpasses SONET/SDH Jitter Generation/Transfer Requirements VSC1236 1:16 Data Demultiplexer PLL Based Clock Recovery Highly Sensitive Front-end: 10mVpp Single-ended Powerful Adaptive Threshold Control Features Support of Multiple Rates with a Single Reference Surpasses SONET/SDH Jitter Tolerance Requirements True Loss of Signal Function Direct Recovery of NRZ and RZ Signals Common Features Low Power SiGe Technology No External Heatsink Required 10x10mm BGA Package Single 3.3V Power Supply PB-VSC1235,36-001 1.2W Typical Power Dissipation 10mVpp Single-ended Sensitivity 3mV Maximum Uncorrected Input Referred Offset Multi-frequency Capable with Selectable CDR VCOs Auto-sensing /16 or /512 Reference Frequency Common Specifications -5 to +90C Case Temperature Range 22ps Typical Rise/Fall Time 275mVpp Typical Clock Amplitude <-10dB Output Return Loss <0.1UIpp Jitter Generation 5ps Typical Clock-data Skew Variation VSC1236 High Sensitivity Eliminates Need for AGC/Post-amplifier Adaptive Threshold Control Features to Optimize BER Proven Performance with Degraded/Difficult Signals Such as: - Poor OSNR - Chromatic Dispersion - Differential Group Delay - RZ Signaling S P E C I F I C AT I O N S : VSC1235 1.2W Typical Power Dissipation 330mVpp Typical Data Output Amplitude
VSC1235, VSC1236
9.9 to 12.5 Gbps 16:1 Multiplexer with Clock Multiplier Unit and Demultiplexer with Clock Recovery Chip Set
GENERAL DESCRIPTION: The VSC1235 and VSC1236 is a complete highperformance multiplexer/demultiplexer chip set designed for 9.9-12.5 Gbps applications, including SONET OC-192, SDH STM-64, 10GbE, G.975, G.709 and offering enhanced capabilities specifically designed to address the needs of Ultra Long Haul (ULH) and Long Haul (LH) fiber optic transmission systems. The VSC1235 is a 16:1 Multiplexer with an integrated Clock Multiplier Unit. This device easily surpasses the jitter requirements for SONET/SDH transmission systems. Integrated phase locked loop circuits, including VCOs, are used for high-speed clock generation as well as robust low-speed data transfer. This device offers enhanced features, such as a full-rate clock output, which is specifically designed to be used in long haul and ultra long haul systems that utilize clocked laser drivers or RZ signaling. The clock output features extremely low clock-data skew variation, and can be disabled to save power. The VSC1236 is a 1:16 Demultiplexer (DMUX) with Clock and Data Recovery (CDR) unit. This device is capable of direct recovery of signals which are subject to various impairments/formats inherent in ULH/LH systems, including poor Optical Signal to Noise Ratio (OSNR) arising from optical amplification, distortion from Chromatic Dispersion, Polarization Mode Dispersion / Differential Group Delay (PMD/DGD), and RZ signaling. The highly sensitive front-end, precise phase detector / decision circuit, and adaptive threshold features eliminate the need for AGC amplifiers, post-amplifiers, filters, etc. which are traditionally needed to recover these signals. VSC1236 BLOCK DIAGRAMS: VSC1235
For more information on Vitesse Products visit the Vitesse web site at www.vitesse.com or contact Vitesse Sales at (800) VITESSE or sales@vitesse.com
(c)2004 Vitesse Semiconductor Corporation Vitesse, ASIC-Friendly, FibreTimer, TimeStream and Snoop Loop are trademarks of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their respective holders. Vitesse Semiconductor Corporation ("Vitesse") retains the right to make changes to its products or specifications to improve performance, reliability or manufacturability. All information in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change without notice at any time.
741 Calle Plano Camarillo, CA 93012, USA Tel: +1 805.388.3700 Fax: +1 805.987.5896 www.vitesse.com
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