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| Dual Speed 10-bit Serializer/Deserializer VSC7145 Storage Communication Products Product Brief Features and Benefits * Dual Speed Operation: - Fibre Channel: 1.06/2.12 Gb/s - Gigabit Ethernet: 1.25 Gb/s - InfiniBandTM: 2.5 Gb/s * 10-bit, SSTL_2 or SSTL_3 Interface * HSPI Interface Compliant * ASIC-FriendlyTM Timing to the Transmitter * Separate Transmitter/Receiver Rate Controls support Auto Speed Negotiation * No Passives needed on High Speed Signals * On-chip, 100 Ohm Termination * Write Pre-Emphasis in Transmitter * Cable Equalization in Receiver * Analog/Digital Signal Detection * Flexible Reference Clock * Single 3.3V Supply, 800mW * 64-pin, 14 mm PQFP Package * Pin Compatible to Agilent HDMP-263x General Description The VSC7145 is a dual-speed Fibre Channel, Gigabit Ethernet and InfiniBand Serializer/Deserializer (SerDes) optimized for performance and power in an industry-standard pinout. It accepts 10-bits of SSTL, 8B/ 10B encoded transmit data, latches it synchronously to the Transmit Byte Clock (TBC) and serializes it onto the SO differential output at a baud rate which is 10, 20 or 40 times the REFCLK frequency. The VSC7145 samples serial receive data on the SI input, recovers the clock and data, deserializes it onto a 10-bit SSTL bus and outputs two recovered clocks at 1/10th or 1/20th of the baud rate. Both disparities of the K28.5 characters are detected and used for aligning the serial data to the parallel output bus. Independent speed selectors control the transmitter and receiver separately to support industry-standard automatic speed negotiation protocols. A combined analog/digital signal detect circuit indicates the presence of valid signal levels on the SI input. The VSC7145 contains on-chip PLL circuitry for synthesis of the bit rate transmit clock, and extraction of the clock from the received serial stream. The parallel bus of the VSC7145 is compliant with the High Speed Parallel Interface (HSPI) standard developed by the T11.2 Fibre Channel Committee. InfiniBandTM/SM is a trademark and service mark of the InfiniBand Trade Association ASIC-FriendlyTM is a trademark of Vitesse Semiconductor Corporation www.vitesse.com Dual Speed 10-bit Serializer/Deserializer Product Brief VSC7145 Storage Communication Products Specifications * Data Rate: 1.0 - 2.5 Gb/s * REFCLK: 52.5 to 126 MHz * Frequency Offset: +/-200 ppm * Fast Locking: <300 data edges * Transmitter Output: 1.0V p-p Minimum * Receiver Input: 200mV p-p Minimum * 3.3V +/- 5% Supply * 0 - 70C Ambient Operation VSC7145 Block Diagram 10 R(0:9) QD Q Serial to D Parallel QD 0 1 = SI+ SI- RXRATE RBCSYNC RBC0 RBC1 COMDET ENCDET RX_LOS EWRAP Comma Detect Clock Recovery Signal Detect T(0:9) REFCLK1 REFCLK0 REFRATE TBC TXRATE 10 DQ Parallel to Serial TXCAP0 0.1uF TXCAP1 DQ SO+ SOEQAMP Clock Multiplier x10/x20/x40 Applications * Fibre Channel -Host Adapters -Hubs/Switches -RAID systems * Gigabit Ethernet -NICs -Switches -Proprietary Uplinks * InfiniBand -Host Channel Adapters -Target Channel Adapters -Switches * Proprietary Serial Links Dual Speed Auto Negotiation Fibre Channel Application VSC7145 T(0-9) TBC EN_CDET EWRAP TXRATE 1.06 / 2.12 Gb/s Link SO+ SO- Protocol Controller CAP0 R(0:9) RXRATE CAP1 RBC0 RBC1 RX_LOS SI + COMDET REFRATE SI RBCSYNC REFCLK 0.1uF Optical GBIC 106.25MHz OSCILLATOR Product Options Part Number VSC7145RU-30 VSC7145RU-31 VSC7145RU-34 Low Speed I/O SSTL_2 SSTL_3 SSTL_2 Speed (Gb/s) 1.05 - 1.26 (Half Speed) or 2.10 - 2.52 (Full Speed) HS Termination 100 Ohms Compatibility Agilent HDMP-2630 Agilent HDMP-2631 Agilent HDMP-2634 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 www.vitesse.com (c) Copyright 2000 Vitesse Semiconductor Corporation and the Vitesse logo are all registered trademarks of Vitesse Semiconductor Corporation |
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