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| NETWORK PRODUCTS VSC8239 9.953 Gbps to 11.3 Gbps Dual XFP Signal Conditioner BLOCK DIAGRAM: LOLN PIO4, LOL_POL RX_BYPSEL[ 3:0] BYP LOGIC TX_LOL RX_GAIN RX_BOOST DAC DAC RXFILT DAC RX_BW RX_OC DAC Receive Data Out RD+ RD- OD CK/4 VGA RX CDR RXIN+ RXIN- Receive Data In RX_BYPASS RX_LT R Offset Correction RX_OC_ LOOP_ENBL LOS_ POL LOS/LOT REFCLK+ REFCLK- HOST_ LPBCK/ RX_ D NV I LOS RX_LOS HOSTS IDE PIO[4:0] Serial Interface Control TX_OC_ LOOP_ENBL CTRL Signals Read back Signals Thr TX_LOL DAC DAC LINES IDE SET/ CLR Offset Correction Transmi t Data In TD+ TD- LINE_LPBCK/ T X_DINV TX_ LTR TX CDR VGA DAC DAC DAC TX_BOOST TX_GAIN TX_OC TX_BW DAC CK/4 OD BYP L OGIC TX_BYPASS TX_ BYPSEL[ 3:0] TXOUT+ TXOUT- Transmit Data Out TXF ILT CDD12 F E AT U R E S : 4Small size - 32-Pin, QFP (5 mm x 5 mm) package 49.953 Gbps to 11.3 Gbps operation 4Integrated loopback functions 4Programmable gain and equalization for Rx and Tx 4Two-wire Serial Interface/SPI Serial Control Interface 410 mV typical input sensitivity 4Built In Self Test (BIST) features including flexible error detection modes 4Full XFP compliant jitter specifications BENEFITS: 4Reduces board space usage 4Continuous tuning of the operation frequency without needing to select between VCO 4Provides on-chip line and diagnostic functions 4Allows optical and XFI adaption of input signals for optimized sensitivity and jitter performance 4Allows serial access to internal control registers 4Provides long-haul receive optical sensitvity 4Allows for built in test signal generation of industry standard PRBS and user defined-patterns coupled with a full rate error detection capability 4Fully meets all XFP MSA SONET and datacom jitter specifications including jitter generation, tolerance, and transfer S P E C I F I C AT I O N S : 49.953 Gbps to 11.3 Gbps operation 410 mV typical input sensitivity 45 mm x 5 mm package 4Full XFP compliant jitter specifications 4XFI compliant IO specifications 41.8 V single power supply 4600 mW typical power dissipation PB-VSC8239-001 VSC8239 9.953 Gbps to 11.3 Gbps Dual XFP Signal Conditioner GENERAL DESCRIPTION: The VSC8239 device is a dual 10 Gbps Clockand-Data-Recovery unit (CDR) designed for use as a signal conditioner IC for XFP modules. This 5 mm x 5 mm single chip solution has advantages of cost, size, and feature set over existing two chip solutions. A two-wire serial interface provides versatile control and alarm access. Each CDR is dedicated to supporting the corresponding transmit and receive path as specified in the XFP MSA standard. The Receive (Rx) data path consists of a limiting amplifier with offset correction and programmable Equalization (EQ) function, followed by a Clock Recovery Unit (CRU), Phase-Locked Loop (PLL), and a XFI compliant data output driver. Rx Loss of Signal (LOS) and Rx Loss of Lock (LOL) alarm signals are also supported to provide full compliance to the XFP standard. The Transmit (Tx) data path consists of a Variable Gain Amplifier (VGA) with a programmable EQ function. The VGA and EQ are digitally controlled through the Two-wire Serial Interface/SPI interface and allow for application specific jitter generation optimization. A PLL-based CRU drives the 50 ohms Tx data driver with levels compatible with available laser driver IC's. The Tx LOL alarm signal is supported. Leveraging off the integration of transmit and receive path, the VSC8239 device provides diagnostics and line loopback modes that enable advanced XFP module level features such as a Built In Self Test (BIST) feature with programmable error detection capability. This facilitates high volume module manufacturing and system level setup. It has a continuously tunable operating range from 9.9 Gbps to 11.3 Gbps supporting OC-192 (9.953 Gbps), 10 GbE (10.3 Gbps), 10 Gbps Fibre Channel (10.5 Gbps), OC192FEC (10.709 Gbps), 10 GbE + FEC (11.05 Gbps), and 10 Gbps Fibre Channel + FEC (11.3 Gbps) data rates. A P P L I C AT I O N S : Fully compatible with the complete family of Vitesse XFP module application products including 10 Gbps SERDES, Host ASIC family: VSC8476, VSC8478, VSC8479, and 10 Gbps laser drivers and TIAs: VSC7980, VSC7981, VSC7982, VSC7985, VSC7978, and VSC7979. A P P L I C AT I O N D I A G R A M : X FP Tra ns c e iv e r VS C 7 9 8 6 R O S A P P in in T IA DD ee c c t r e t te to VS C 7 9 7 8 /9 V S C7 9 8 5 Optica l Inter face Las e r uC C V S C 7 9 8 2 /1 /0 E M L /D M L /V C S E L DR IV E DR IV E R R Pos t A m p + CDR V SC 8 23 3 D u a l Sign a l C on C on d it ion er C D R + CU EQ XFI Interface H O S T A S IIC SC 11 0 G 0G b XC VR S SFI4 -SO NET VSC8 479 X AUI -10G b E/FC XAUI -10Gb e/FC VSC8476 XG MII10 Gb e/ FC E/FC VSC8478 VS C8 2 34 D u a l C DR w VC SEL Dr iver Trademarks TM Vitesse, ASIC-Friendly, FibreTimer, TimeStream, Snoop Loop, Super FEC, FOCUSConnect, Meigs-II, Meigs-IIe, Lansing, Campbell-I, Barrington, PaceMaker, HOVCAT48, HOVCAT48e, HOVCAT192, HOVCAT192e, Micro PHY, FOCUS32, FOCUS16, IQ2200, VersaCAT, GigaStream, HawX, SparX, StaX, VstaX, SimpliPHY,VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINK, OctalMAC, EQ Technology are trademarks in the United States and/or other jurisdictions of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their respective holders. Copyright (c) 2005 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. While the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by Vitesse for its use. Furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent right of any manufacturer. 741 Calle Plano Camarillo, CA 93012, USA Tel: +1 805.388.3700 Fax: +1 805.987.5896 www.vitesse.com sales@vitesse.com |
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