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| GIGABIT PRODUCTS GIGABIT PRODUCTS VSC7166 OC-192 Very Short Reach (VSR) Converter IC F E AT U R E S : 10 Gigabits Per Second of Aggregate Data Throughput SONET Frame Transport Mechanisms 8B/10B Encoder/Decoder LVDS Input and Output Signaling CRC-based Bit Error Correction Algorithm Protection Switching Mechanism Recovers any Lost Channel BENEFITS: Allows the Use of Inexpensive, Currently Available Parallel Optical Modules Error Detection/Correction for a Robust Link Inter-channel Deskewing Capability Error Diagnostics to Improve Links Patchcord Reversal Protection for Mistake-proof Installation 8B/10B Encoding for DC Balance, Effective Clock Recovery Selectable Input Terminations for Maximum Data Transfer Integrity Robust Loss of Synchronization (LOS) and Loss of Frame (LOF) State Machines Conforms to OIF-VSR4-01.0 JTAG Boundary Scan Two Recovered Clock-based Outputs User Specified High-speed and Low-speed Input Terminations 1.8V and 2.5V Power Supplies 256 Pin Thermally Enhanced BGA VSC7166: SONET INTERFACE Serial Register Interface Parallel Optics OC-192 Framer VSC7166 Tx Parallel Optics Rx Parallel Optics Rx Parallel Optics Tx VSC7166 OC-192 Framer PB-VSC7166-001 VSC7166 OC-192 Very Short Reach (VSR) Converter IC GENERAL DESCRIPTIONS The VSC7166 is used to interface between OC-192 Framers and Parallel Optical Modules. In the Serializer, 16-bit OC-192 data from the Framer is mapped and encoded onto twelve 1.244 Gb/s, 8b/10b outputs, with 1 of the twelve outputs being used for XOR protection and another of the twelve for EDC. In the Deserializer, the twelve 1.244 Gb/s inputs are decoded and remapped to SFI-4 OC-192 data for the Framer. The redundant channel permits data to be reconstructed in the deserializer even if a channel fails. The 16bit 622 MHz signals and the 12 1.244 Gb/s interfaces both utilize LVDS signaling. These devices are intended for high-speed Router-to-Router and DWDM/Sonet Terminal-to-Router connections. The VSC7166 is designed to conform to the Optical Internetworking Forum's (OIF) OIF-VSR4-01.0 Implementation Agreement. S P E C I F I C AT I O N S : Ten 1.244Gb/s Data Channels 80 Expanding use of the Internet has caused very high volumes of data traffic to become concentrated at places such as central offices (CO's), points of presence (POP) and portal sites. At these sites many pieces of equipment such as high-speed routers, Dense Wavelength Division Multiplexing (DWDM) equipment and Add/Drop Multiplexors (ADM) are located in close proximity (co-located) and must be connected by extremely high throughput data links. At the core of the network such high volume data traffic is efficiently handled using Synchronous Optical Network (SONET) links. To date, these links have been optimized for long haul transmission where the high cost of traditional lasers has not been a factor. For short reach links between co-located equipment it is highly desirable to use much less expensive arrays of Vertical Cavity Surface Emitting Lasers (VCSEL's). An integrated circuit is necessary to form the interface between the traditional SONET network and VCSEL based optical modules and the VSC7166 fulfills this role. VSC7166 BLOCK DIAGRAM Aggregate 10Gb/s Data Throughput 16 8 Framer and Byte Clock DIP/N(15:0) 8 XOR 8B/10B Enclode 120 1.24Gb/s Tranceivers Tx 12 To Transit Optics Clock Frequency Tolerance: +/-200 ppm 1.8V and 2.5V Power Supplies Up to 80ns Inter-channel Deskewing 2.0W Power Dissipation (Typical) ON/P(11:0) EDC Transmitter Receiver Byte Mux 27mm x 27mm, 256-pin Thermally Enhanced Ball Grid Array (TBGA) OP/N(15:0) 16 CRC Check Protection Switching PRBS Check 96 Alignment Buffer 96 8B/10B Decode & LOSyn 120 1.24Gb/s Tranceivers Rx IN/P(11:0) JTAG Boundary Scan Processor Interface Block PF Your Partner for Success. 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 741 Calle Plano Camarillo, CA 93012 Tel: 805.388.3700 Fax: 805.388.7565 www.vitesse.com (c)2002 Vitesse Semiconductor Corporation |
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