Designing serdes serdes interfaces with the 82546gb ethernet controller application note ap466 3 2. This is not a complete dissertation and leaves many q. This book discusses the many aspects of highspeed serial designs. Pdf an analogtype highspeed serializerdeserializer serdes has been. Keystone ii architecture serializerdeserializer serdes rev.
He has helped architect pll and serdes product lines which now extend to over 100 customers, over 250 chips, and billions of ips. A 20gbs serdes transmitter with adjustable source impedance. Pdf high speed clock and data recovery for serdes applications. Inphi embarked on its iphy architecture in 2009, and is working closely with leading networking oems and ecosystem partners to develop the 100 gbe cmos serdes technology. Serdes transceivers for highspeed serial communications. Such ios, when integrated into a highly programmable digital environment such as an fpga, allow you to create highperformance designs that were never possible before. For example, in order to meet the infiniband architecture specification e. A regulator design for a serdes phy of a high speed serial.
Smartfusion2 fpga high speed serial interface simulation. Each gmsl serdes ic features a builtin spreadspectrum capability, which reduces electromagnetic interference emi of the link. Lsc does not represent that products described herein are free from patent infringement or from any thirdparty. For serdes channels, a significant amount of analysis and design space exploration is performed during the prelayout phase of the design. Short for serializerdeserializer, serdes is an integrated circuit transceiver used to convert parallel and serial data. Serdes implementation guide for keystone i devices application report page 5 of 56 submit documentation feedback.
The resulting benefits of the bus lvds serdes architecture include. Serializerdeserializer serdes pronounced sirdees is a pair of functional blocks commonly used in high speed communications to compensate for limited inputoutput. As described in the max9259 data sheet, the preemphasis level is set by register address 0x05, d3. June 7 to 10, 2009june 7 to 10, 2009 ieee sw test workshopieee sw test workshop 322322 contents 1. The goal of this project was to solve the challenges in high speed serdes design, which included the low jitter design, wide bandwidth design and low power. Architecture initiative obsai and common public radio interface cpri. Keystone ii architecture serializerdeserializer serdes. Many models have been created for customers at over 40 high speed digital ic companies. Dec 05, 2016 this set of videos address serdes or serialize deserialize circuits like pci express, sata, xaui, etc. Design of a new serializer and deserializer architecture for onchip serdes transceivers article pdf available in circuits and systems 0603. Serdes links in modern times to take advantage of both topologies, often applications involve both parallel and serial communications. A tcoil was used to improve the output impedance matching over a. The material focuses on hss devices, and the consolidation of related topics into a single text. Conclusion a 20gbs sourceseries terminated sst serdes transmitter using 65nm bulk cmos technology has been developed and tested.
Designing serdesserdes interfaces with the 82546gb ethernet. Parallel clock this is used to serialize a parallel bus input together with data addresses and control signals. Internal serdes architecture may seem irrelevant, but this overlooked item can dictate many important system parameters like system topology, protocol overhead. They want to download and stream hd movies as fast as possible. Design of lowcomplexity transceivers for such highspeed serdes faces many technical challenges.
Templatebased support for single and differential via pad stacks, bga breakouts. Pdf in satellite systems, large amount of high speed data is required to be transmitted from one. Figure 1fibre channel switch architecture similarly to xgmii, xaui is. The purpose of this paper is to detail our investigation of issues involved in clock and data recovery associated with a high speed serializerdeserializer serdes receiver block. Improvement over traditional architecture in throughput is achieved through the. These blocks convert data between serial data and parallel interfaces in each direction. Design and verification challenges of a multiprotocol serdes. With the serdes designer app, you can use statistical analysis to rapidly design wired communications transmitters and receivers. Deserializer architecture for basic functional operations of serialization and deserialization used in onchip serdes transceiver. A reference clock is used to synchronize the data stream, which has a jitter tolerance at the serializer of 510 ps rms. The main advantage of this technique hich w is input is sampled with lower. Onchip serdes transceiver is a promising solution which can.
Ug0567 user guide rtg4 fpga highspeed serial interfaces. Pdf design of analogtype highspeed serdes using digital. Serdes implementation guidelines for keystone devices. The negative preemphasis levels correspond to where highfrequency terms. Serdes reduces the number of data paths and also the number of connecting pins or wires required. In essence, a serdes is a serial transceiver which converts parallel data into a serial data. Eye analysis tool use after tool 2 multigigabit serdes system. In chapter three, first an overview on current serdes architectures is given. 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 well as logic.
Pdf serdes technology for gigabit io communications in. There are at least four distinct serdes architectures. This set of videos address serdes or serialize deserialize circuits like pci express, sata, xaui, etc. The line drivers are designed to match the characteristic impedance of the transmission line. 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.
A serializerdeserializer serdes is a circuit that converts parallel data into a serial stream and vice versa. Pdf design of a new serializer and deserializer architecture for. It helps solve clockdata skew problems, simplifies data transmission, lowers the power consumption and reduces the chip cost. It is assumed that the connection is made between a keystone i soc and another device compliant to the. In addition, inphi has been actively driving the development of next generation low power and high port density100gbe standards at the ieee and the optical internetworking. Serdes transceiver design for multicore communication.
Choosing the right highspeed serdes technology for adas and. Architectural design and best practices project final report. Although the term serdes is generic, in speech it is sometimes used as a. Pdf the increasing trends in socs and sips technologies demand integration of large numbers of buses and metal tracks for interconnections. The proposed serdes architecture was implemented in tsmc 65nm technology and simulated at a supply of 1v. Data stream using a lowspeed forwarded clock with 7. Serdes system design and simulation tools, technologies and. Before silicon creations, jeff was with hpagilent labs developing high performance serdes adcs, and dacs. Comparison of mayo serdes with other recent examples v. Lsc does not represent that products described herein are free from patent. In this paper, we explore a multiband architecture for a 25 gbps serdes, where the channel in each subband is approximately frequency flat, eliminating need of an equalizer in the receiver.
High speed serdes devices and applications in searchworks catalog. The serdesif macro includes a pma block, which is a serializer and deserializer. The cadence ethernet serdes ip family features intellectual property blocks that you can easily and quickly integrate into your design. An introduction to preemphasis and equalization in maxim gmsl. Design of a new serializer and deserializer architecture for. Optical serdes test interface for highspeed and parallel testing. This need for speed directly drives serdes innovation. This architecture employs a design technique which samples input on both edges of clock. The powerovercoaxial architecture of the ics eliminates the need for additional power or ground wires, addressing vehicle weight challenges. Pcml is a high speed differential architecture derived from cml logic and is capable of speeds.
Highspeed serdes interfaces are the gateway for data traffic and analysis on the cloud. Since founding the company, jeff has helped start, grow, and manage design centers in atlanta and krakow, poland. Keystone ii architecture serializerdeserializer serdes users guide literature number. With an integrated bidirectional control channel, a single. The family includes 10gkr phy ip and 10gkr multiprotocol phy ip. 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. Serdes chips are available in several architectures. Soc architecture, the ort82g5 contains eight backplane. A serdes transmitter serves to transmit those parallel data to the receiver through a highspeed serial data link. 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.
Ds92lv16 16bit serdes design guide texas instruments. In the datacenter market and in the enterprise market, its extremely important to. The term serdes generically refers to interfaces used in various. A 12gbps all digital low power serdes transceiver for onchip. High speed serdes devices and applications provides a broad understanding of high speed serdes hss device usage. A block diagram of a simplified serdes transceiver. When perfect matching is achieved at the source line driver, the swing at the transmission line input is expected to be reduced by half, i. Designcon 2004 serdes architectures and applications.
Serdes ip proven interoperability for versatile standards. Hyperlynx expedites design setup and topology experimentation by providing templates for commonly used routing topologies. Serdes converts data into a serial data stream and then transmits it over a differential media. Tunable output impedance was implemented to achieve a good source match at dc. A high speed serializerdeserializer design semantic scholar. Analog design in contrast is often a very manual process almost all tasks during. These models can be transmit tx or receive rx models that are linearandtimeinvariant lti or nonlinearortimevariant nltv. A serializerdeserializer serdes pronounced sirdeez or sirdez is a pair of functional blocks commonly used in high speed communications to compensate for limited inputoutput. Download limit exceeded you have exceeded your daily download allowance.
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