VSC8228 Dual Channel Multirate Signal Conditioner and Retimer The VSC8228 is a dual repeater/retimer for Fibre Channel, Gigabit Applications Ethernet, SONET/SDH, and In niband applications. The VSC8228 Fibre Channel switches, disk arrays, RAID contains dual FibreTimer clock recovery units (CRU) for bidirectional subsystems, host bus adapters signal conditioning in system interconnect and serial backplane Gigabit Ethernet line cards applications. The device supports rates from 125 Mbps up to Blade server backplanes 4.25Gbps. Using a single reference clock for acquisition, the VSC8228 retransmits the incoming serial data synchronously to the reference Speci cations clock in retimer mode or to the incoming data in repeater mode. In the Single 1.2 V and/or 1.8 V supply retimer mode, add/drop elasticity buffers insert/delete Fibre Channel ll 10 mm x 10 mm, 64-pin TQFP package words to account for timing differences in the incoming data and local reference clock. SPI or two-wire serial interface Typical power: 360 mW 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 generator and checker. An optional half-rate clock for SGMII applications is provided on the receive channel output. 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 con gured through industry standard serial interfaces (Two-wire or SPI). 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 10 mm x 10 mm, 64-pin TQFP package. Typical power dissipation for a 1.2 V supply is 360 mW. Application Diagram Optical VSC8228 Module Line Card Switch ASIC Backplane Switch Fabric Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction with mission-critical equipment or applications. Any performance speci cations are believed to be reliable but are not veri ed, and Buyer must conduct and complete all performance and other testing of the products, alone and together with, or installed in, any end-products. Buyer shall not rely on any data and performance speci cations or parameters provided by Microsemi. It is the Buyers responsibility to independently determine suitability of any products and to test and verify the same. The information provided by Microsemi hereunder is provided as is, where is and with all faults, and the entire risk associated with such information is entirely with the Buyer. Microsemi does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other IP rights, whether with regard to such information itself or anything described by such information. Information provided in this document is proprietary to Microsemi, and Microsemi reserves the right to make any changes to the information in this document or to any products and services at any time without notice.VSC8228 Dual Channel Multirate Signal Conditioner and Retimer Offers exible implementation. FibreTimer in retimer mode Features minimizes the jitter generation, while maintaining high jitter Dual clock and data recovery architecture for Gigabit Ethernet tolerance. In repeater mode, offers low latency signal cleanup. and Fibre Channel applications Bypass mode allows support for rates in not directly by the FibreTimer con gurable Clock Recovery Unit (CRU): repeater, CDR retimer, or bypassed Supports extended trace lengths over copper backplanes and Programmable input signal equalization, output de-emphasis, cables, ideal for backplane and rack-to-rack applications and output drive levels Supports enhanced receiver diagnostic capabilities Analog signal detect and protocol monitor indicators Provides SerDes to SGMII Gigabit Ethernet interface Optional half-rate SGMII clock and repeated reference clock conversion output Enables comprehensive system diagnostic capabilities the Built in self test which can generate and detect an unframed extended pattern support reduces the need for external test 2 7, 2 23, and 2 31 Pseudorandom Bit Stream (PRBS), a equipment user de ned pattern, and the Fibre Channel CRPAT, CJTPAT, and CSPAT patterns Related Products Visit www.microsemi.com for information about other related Bene ts products. Provides Fibre Channel and Gigabit Ethernet signal conditioning, improving the signal integrity VSC8228 Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system solutions for com- munications, defense and security, aerospace, and industrial markets. Products include high-performance and radiation- hardened analog mixed-signal integrated circuits, FPGAs, SoCs, and ASICs power management products timing and synchronization devices and precise time solutions voice processing devices RF solutions discrete components enter- prise storage and communications solutions, security technologies, and scalable anti-tamper products Ethernet solutions Power-over-Ethernet ICs and midspans custom design capabilities and services. Microsemi is headquartered in Aliso Viejo, California, and has approximately 4,800 employees worldwide. Learn more at www.microsemi.com. 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