Serdes system design and simulation tools, technologies and. Serdes interfaces overview silicon creations has a range of serializerdeserializer ip built upon proven ring plls and highspeed line drivers and receivers. The p4080ds is designed to the atx formfactor standard, allowing it to be used in 2u rackmount chassis, as well as in a standard atx chassis. Designers typically use an eye diagram and an eye template to describe the performance and margin of a serial link. Pdf in this paper, we design and implement the cdr clock and datarecovery with. Pdf designcon 2004 serdes architectures and applications.
The signal is split with one leg going to the cr clock recovery circuit and the other to the logicdecoding. Pdf this decade has witnessed wide use of datadriven systems. Advanced serdes debug with a bert white paper figure 3 shows a typical serdes architecture. This paper reports a design of a new serializer and deserializer. The simplest method of transferring data through the inputs or outputs of a silicon chip is to directly connect each bit of the datapath from one chip to the next chip. The data path provides preliminary equalization of digital input symbols through a. Soc architecture, the ort82g5 contains eight backplane. Each gmsl serdes ic features a builtin spreadspectrum capability, which reduces electromagnetic interference emi of the link. Mar 22, 2012 general serdes system figure 1 shows a general serdes system. Architecture initiative obsai and common public radio interface cpri. Instead of tackling the whole bus with one multiplexer, the parallel clock serdes architecture employs a bank of nto1 multiplexers, each serializing its section of the bus separately. Pci express, sonetsdh, ethernet 1gbe, sgmii, xaui, cpri, smpte 3g and serial rapidio sysdsp fully cascadable slice architecture. Our pma architecture is in production in over 30 serdes, from 180n to 12n and at speeds up to 25gbps.
The main function of the serdes system is to transmit data at high speeds over. A simplified block diagram of the mosys serdes architecture is shown in figure 1. Serdes toolbox provides a matlab and simulink model library and a set of analysis tools and apps for the design and verification of serializerdeserializer serdes systems or highspeed memory phys such as ddr5. Adobe acrobat reader dc software is the free global standard for reliably viewing, printing, and commenting on pdf documents. I used to believe that interface like sgmii or xaui are all serdes, but it confuses me now. The 32 gbps multiprotocol serdes phy is designed to meet the power efficiency and performance.
With the serdes designer app, you can use statistical analysis to rapidly design wired communications links. The ort82g5 offers the worlds finest programmable serdes with unsurpassed performance. Instead of scrambling each byte into a new 10bit code as with 8b10b coding, the bus lv d s s e r d e s coding scheme frames each data. Quartz crystals, quartz crystal oscillators, clock generators, and clock buffers are commonly used in system designs with free running, clock architecture.
The next two chapters describe the feat ures and functions of protocol logic used to implement various network protocol interface standards. Eye analysis tool use after tool 2 multigigabit serdes system. A serializerdeserializer is a pair of functional blocks commonly used in high speed. Parmar 4 1 indian institut e of space and technology, trivandrum. Xaui is four parallel serdes lanes of 8b10b encoded data at 3. Onchip serdes transceiver is a promising solution which can reduce the number of interconnects and offers remarkable benefits in context with power consumption, area congestion and crosstalk.
When using a serdes chipset for highspeed data interconnection, the users expect to know the performance of the serdes link and the margin for reliable data transmission. An integrated switch fabric architecture comprises. W1714 systemvue ami modeling kit, w17 systemvue serdes. Despite their design and verification complexity, serdes have become an indispensable part of an soc block. Design of a new serializer and deserializer architecture. Extolls serdes architecture is based on digital design elements and methodologies. Serdes architecture by dave lewis, national semiconductor corporation ethernet specification including serdes combined with 8b10b. These blocks convert data between serial data and parallel interfaces in each direction. It is broadly composed of a transmitter tx and a receiver rx section.
Our ip has been used to support a broad range of protocols including xsgmii, smpte. The p4080 development systems official designation is p4080ds, and may be ordered using this part number. The w17 systemvue serdes model library is a subset of w1714 that omits its code generation feature. Sgmii is a single serdes lane of 8b10b encoded data at 1. It is used for architecture optimization of a serializerdeserializer serdes in cases where ami. The proposed cdr utilizes a multiphase multiplying delaylocked loop mdll to generate the eightphase reference clocks, which achieves multiphase frequency multiplication with a small area and less power consumption. Mar 21, 2017 keysights w1714 systemvue ami modeling kit consists of serdes libraries for systemvue plus automatic ibis ami model generation. Designing a highspeed, highperformance serializerdeserializer serdes for advanced process nodes can be challenging on many levels. Instead of tackling the whole bus with one multiplexer, the parallel clock serdes architecture employs a. Serdes is just a generic term for serializerdeserializer. Deserializer architecture for basic functional operations of serialization and deserialization used in onchip serdes transceiver. It explains function of serdes and highspeed serializerdesrializer hss devices. Plain analog blocks are only used where absolutely necessary.
Pdf this decade has witnessed wide use of datadriven systems, from. And now, its connected to the adobe document cloud. The serial data bit stream is input to the transmitter. Nearly all automotive electronics applications today are free running. Design of highspeed serdes transceiver for chiptochip. Pdf system level optimization for highspeed serdes. Tradeoffs exist when selecting the clock architectures. Pcml is a high speed differential architecture derived from cml logic and is capable of speeds. Clock talk live schedule presentation will begin shortly. Optical serdes test interface for highspeed and parallel testing. Serdes links in modern times to take advantage of both topologies, often applications involve both parallel and serial communications.
The embedded clock bits architecture transmitter serializes the data bus and the clock onto one serial signal pair. With an integrated bidirectional control channel, a single. Physical implementation of common clock architecture figure 2 above shows a physical implementation of the common clock architecture. The term serdes generically refers to interfaces used in various technologies and applications. Clock talk live schedule presentation will begin shortly wednesday, sept 16th ieee 1588 timing solutions for nontelecom applications wednesday, sept 23rd clock jitter demystified and jitter requirements for 56112 serdes wednesday, oct 14th design considerations when selecting a xovcxo clock reference. In the framework of the gigabit transceiver project gbt, a prototype, the gbt serdes asic, was developed, fabricated and tested. Pdf high speed serial link design serdes introduction. The main advantage of this technique hich w is input is sampled with lower. Switch fabric architecture using integrated serdes. Lock to random data for true hot plug capabilitylock can be achieved w i t h o u t i n t e r r u p t i n g traffic with pll training patterns and w i t h o u t a lossoflock feedback path from receiver to t r a n s m i t t e r. The rambus 28 gbps multiprotocol serdes mps phys are comprehensive ip solutions that deliver enterpriseclass performance across the challenging signaling environments typical of networking. Lsc does not represent that products described herein are free from patent infringement or from any thirdparty.
Keystone ii architecture serializerdeserializer serdes rev. Book 1 features a dedication page from robert peake to henry, prince of wales. Us9077574b1 dsp serdes receiver with ffedfedffe data path. Manuscript note dated 1756 on verso of book 3, chapter 4, fol. Overcome 2528gbps serdes design and implementation. Bus lvds serdes architecture the bus lvds serdes architecture was developed in conjunction with major telecommunications customers who desired features not provided by common 8b10b datacom serdes chipsets. Architecture of highspeed serdes main device in this operation. Architecture guide for instructors slides slide numbers approx. To sustain high radiation doses while operating at 4. The system uses equalization at the transmitter, linear equalization and.
Electronics free fulltext a 100 gbs quadlane serdes. A 100 gbs quadlane serdes receiver with a phaseinterpolator pibased quarterrate alldigital clock and data recovery cdr is presented. Choosing the right highspeed serdes technology for adas. Design of a new serializer and deserializer architecture for. Jan, 2015 deserializer architecture for basic functional operations of serialization and deserialization used in onchip serdes transceiver. June 7 to 10, 2009june 7 to 10, 2009 ieee sw test workshopieee sw test workshop 322322 contents 1.
Internal serdes architecture may seem irrelevant, but this overlooked item can dictate many important system parameters like system topology, protocol overhead, data formatting and flow, latency, clocking and timing requirements, and the need for additional buffering as. A serializerdeserializer serdes pronounced sirdeez or sirdez is a pair of functional blocks commonly used in high speed communications to compensate for limited inputoutput. Serdes ip proven interoperability for versatile standards. A serdes receiver device can receive binary signals via wireline channel such that information recovery is primarily or entirely performed via dsp algorithms in the digital domain includes an analog to digital converter, adaptation and calibration blocks, and a sequential nway parallel equalization data path. By synchronizing all serdes reference clocks to a highly accurate reference. Defining a new highspeed, multiprotocol serdes architecture. Internal serdes architecture may seem irrelevant, but this overlooked item can dictate many important system parameters like system topology, protocol overhead, data formatting and flow. Parallel clock serdes are normally used to serialize wide dataaddresscontrol parallel buses such as pci, utopia, processor buses, and control buses, etc. The speed 16gbps stresses the capabilities of even the most modern process with limited gain available and without areaintensive peaking inductors. Fstart, fstop set by system architecture sources add rms, rj rms. Our serdes architecture is in production in processes ranging from 12nm to 180nm and at rates from 100mbps to 32.
Pdf in this paper, we design and implement the cdr clock and data recovery with. We offer targeted phys including jesd204, xaui, cpri, sgmii, cpri, oifcei, vbyone hs, infiniband, pcie12345 and serial rapidio, and a multiprotocol pmas covering over 30 protocols from below 250mbps to 32. This contribution is to report preliminary test results, help understand tx equalization, and provide reference data for serdes architecture considerations. The powerovercoaxial architecture of the ics eliminates the need for additional power or ground wires, addressing vehicle weight challenges. The reference clock is fanned out to both the motherboard tx serializerdeserializer serdes and the addin card rx serdes. Optical serdes test interface for highspeed and parallel. The gbt serdes was thus built in the same technology foreseen for the fabrication of the gbtx in order to study the feasibility of the high speed seri alizer and clock recovery circuits. The vsc8221 offers direct connectivity to sgmii or serdes interfaces. Cadence serdes ip solutions address the performance, power, and area requirements of todays mobile, consumer, and enterprise infrastructure markets with extensive standard support for the latest pcie, ethernet, usb and mipi specifications. The increasing trends in socs and sips technologies demand integration of large numbers of buses and metal tracks for interconnections. Designcon 2004 serdes architectures and applications. There are at least four distinct serdes architectures. This article focuses on serdes architecture, modeling, and important aspects of implementing 2528gbps standards.
This architecture employs a design technique which samples input on both edges of clock. However, one aspect and perhaps the only aspect of chip design which has not. With serdes ip blocks now available, its helped mitigate any cost, risk, and timeto. Us9077574b1 dsp serdes receiver with ffedfedffe data. The main function of the serdes system is to transmit data at high speeds over a channel and receive the correct data at the receiver end. High speed serdes devices and applications david robert. The system uses equalization at the transmitter, linear equalization and dfe at the receiver. Netfusionm2ssomf484 sfp serdes mainboard pcb design hardware architecture draft 0. The resulting benefits of the bus lvds serdes architecture include. Give the best exposure to your ips, by listing your products for free in the worlds largest silicon. The following sections describe the details of the gbt serdes architecture and present the test results. Serdes system design and simulation tools, technologies.
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