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| TRANSPORT PRODUCTS VSC8228 Dual Channel Multirate Signal Conditioner and Retimer BENEFITS: 4Provides Fibre Channel and Gigabit Ethernet Signal Conditioning, Improving the Signal Integrity 4Offers flexible implementation. FibreTimer in Retimer Mode Minimizes the Jitter Generation, While Maintaining High Jitter Tolerance. In Repeater Mode Offers Low Latency Signal Cleanup. Bypass Mode Allows Support for Rates in not Directly by the CDR. 4Supports Exteneded Trace Lengths Over Copper Backplanes and Cables, Ideal for Backplane and Rack-to-rack Applications 4Supports enhanced receiver diagnostic capabilities. F E AT U R E S : 4Provides SerDes to SGMII Gigabit Ethernet interface conversion. 4Dual Clock and Data Recovery Architecture for Gigabit Ethernet and Fibre Channel Applications 4FibreTimerTM Configurable Clock Recovery Unit (CRU): Repeater, Retimer, or Bypassed BLOCK DIAGRAM: 4Programmable Input Signal Equalization, Output De-emphasis, and Output Drive Levels 4Analog Signal Detect and Protocol Monitor Indicators 4Optional Half-rate SGMII Clock and Repeated Reference Clock Output 4Built In Self Test Which can Generate and Detect an Unframed 2^7, 2^23, and 2^31 Pseudorandom Bit Stream (PRBS), a User Defined Pattern, and the Fibre Channel CRPAT, CJTPAT, and CSPAT Patterns PIO0, M0, MOSI, SDA PIO1, M1, SCK PIO2, RESET, MISO PIO3, SSN PIO4 PIO5, M2 PIO6, M3 Serial Interface and Control Logic RXCLKP RXCLKN REFCLK 4Enables Comprehensive System Diagnostic Capabilities. The Extended Pattern Support Reduces the Need for External test Equipment VSC8228 RXINP RXINN CDR with Retimer RXOUTP RXOUTN A P P L I C AT I O N S : RXEMP 4Fibre Channel Switches, Disk Arrays, RAID Subsystems, Host Bus Adapters 4Gigabit Ethernet Line Cards 4Blade Server Backplanes RXASD RXSDU EXOEN LOS and Protocol Error Logic RXRATE0 RXRATE1 RXRP APPSEL CDR with Retimer TXINP TXINN S P E C I F I C AT I O N S : 4Single 1.2 V and/or 1.8 V Supply 410mm x 10mm 64-pin TQFP Package 4SPI or Two-wire Serial Interface 4Typical Power: 360 mW TXOUTP TXOUTN RXASD RXSDU TXRATE0 TXRATE1 TXRP LOS and Protocol Error Logic TXASD TXSDU PB-VSC8228-001 VSC8228 Dual Channel Multirate Signal Conditioner and Retimer GENERAL DESCRIPTION: The VSC8228 is a dual repeater/retimer for Fibre Channel, Gigabit Ethernet, SONET/SDH, and Infiniband applications. The VSC8228 contains dual FibreTimerTM clock recovery units (CRU) for bidirectional signal conditioning in system interconnect and serial backplane applications. The device supports rates from 125 Mbps up to 4.25 Gbps. Using a single reference clock for acquisition, the VSC8228 retransmits the incoming serial data synchronously to the reference clock in retimer mode or to the incoming data in repeater mode. In the retimer mode, add/drop elasticity buffers insert/delete Fibre Channel fill words to account for timing differences in the incoming data and local reference clock. An analog signal detect function is integrated into both channels. In the retimer mode, the device monitors the incoming data for run-length violations and K28.5- symbols. The inputs on both the transmit and receive channels can be looped back to the outputs of the opposite channels for diagnostic purposes. The device provides a built-in pattern A P P L I C AT I O N D I A G R A M : The device may be powered from a single 1.2 V supply, single 1.8 V supply, or both a 1.2 V and 1.8 V supply. The 1.8 V supply is required to meet the LVPECL output swing levels. The device has current-mode logic (CML) inputs and outputs that can be AC-coupled for LVPECL and LVDS compatibility. The IC is packaged in a compact 10mm x 10mm, 64-pin TQFP package. Typical power dissipation for a 1.2 V supply is 360 mW. A high degree of signal integrity is maintained via differential I/O, on-chip input and output terminations, input equalization, and output de-emphasis. The programmable input equalization circuit compensates for the frequency limitations of long printed circuit board (PCB) traces, backplanes, connectors, and cables. Equalization, de-emphasis, output drive levels, data rate, and other features are configured through industry standard serial interfaces (Two-wire or SPI). generator and checker. An optional half-rate clock for SGMII applications is provided on the receive channel output. Optical Module VSC8228 Line Card Switch ASIC Backplane Switch Fabric 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)2005 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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