Industrial Ethernet PHY Brick With Fiber-Optic
TI DesignsIndustrial Ethernet PHY Brick with Fiber-OpticTI DesignsDesign FeaturesTI Designs provide the foundation that you needincluding methodology, testing and design files toquickly evaluate and customize the system. TI Designshelp you accelerate your time to market. Design Resources Tool Folder Containing Design FilesTIDA-00224TLK105LTTPS75433Product FolderProduct Folder Low Power Consumption 270 mW for EPHY, 850 mW for FO-TransceiverTLK105L Ethernet PHY Configured forMII InterfaceProgrammable LED Support Link, ActivityAvago AFBR5803Z. Fiber Transceiver Interface forLonger Distance and Better EMC PerformanceHBM ESD protection on RD and TD Featured Applications ASK Our Analog ExpertsWEBENCH Calculator Tools 5 V 1.8 VTPS71518DCKROptional5 V 3.3 VTPS75433QFWPIndustrial Applications – Circuit Breakers,Protection Relays, Smart Meters (AMI)Substation Automation Products – RTU, ProtectionRelay, IEDsPower Quality AnalyzerStatus LEDs - 2Optional3.3 VAFBR5803Z10/100 PHY TLK105LMII/RMII50 PinSDCCMII/RMII interface to CPUPopulate any one optionCrystal25 MhzOscillatorClock SourceCDCE913PW Crystal 25M I2CPHY - ConfigAn IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and otherimportant disclaimers and information.All trademarks are the property of their respective owners.TIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated1
System Description1www.ti.comSystem DescriptionA simple and effective design makes Ethernet the most popular networking solution at the physical anddata link levels of the Open Systems Interconnection (OSI) model. With high speed options and a varietyof media types to choose from, Ethernet is efficient and flexible. In addition, the low cost of Ethernethardware makes Ethernet an attractive option for industrial networking applications. The opportunity to useopen protocols such as TCP/IP over Ethernet networks offers a high level of standardization andinteroperability. The result has been an ongoing shift to the use of Ethernet for industrial control andautomation applications. Ethernet is increasingly replacing proprietary communications.1.1Basic Fiber-Optic Communication SystemFiber-optics is a medium for carrying information from one point to another in the form of light. Unlike thecopper form of transmission, fiber-optics is not electrical in nature. A basic fiber-optic system consists of atransmitting device that converts an electrical signal into a light signal, an optical fiber cable that carriesthe light, and a receiver that accepts the light signal and converts the light signal back into an electricalsignal.ONINPUT 1010FIBER OPTIC CABLEONONOFFDETECTORONOFFRECEIVERCRUCUITRYOUTPUT DATAOFF101010Figure 1. Basic Fiber-Optic Communication SystemThe complexity of a fiber-optic system can range from very simple (for example, a local area network) toextremely sophisticated and expensive (for example, long distance telephone or cable television trunking).For example, the system shown in Figure 1 can be built very inexpensively using a visible LED, plasticfiber, a silicon photodetector, and some simple electronic circuitry. The overall cost could be less than 20. On the other hand, a typical system used for long-distance, high-bandwidth telecommunication thatemploys wavelength-division multiplexing, erbium-doped fiber amplifiers, external modulation using DFBlasers with temperature compensation, fiber Bragg gratings, and high-speed infrared photodetectors couldcost tens or even hundreds of thousands of dollars. The basic question is “how much information is to besent and how far does it have to go?”1.2Types of Fiber 2Step-index multimodeStep-index single modeGraded-indexIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments IncorporatedTIDU366 – July 2014Submit Documentation Feedback
System Descriptionwww.ti.com1.2.1Fiber-Optic Transceivers OverviewA fiber-optic transceiver is simply a transmitter-receiver pair. A transceiver is tasked with transmitting andreceiving data (1’s and 0’s). A fiber-optic transceiver accomplishes this task by either turning the lightsource on or off. Transceivers fall under two categories: LED transceivers and laser transceivers. LEDsare generally more cost effective and extremely reliable. However, due to the nature of the technology,LEDs are limited to shorter link distances and slower speeds. Lasers are generally higher in power andemit a signal of better quality, resulting in longer-link distances. Lasers are used for applications requiringgreater speeds.1.2.2Multimode Communication LinksMultimode communication links are generally the most common, due to the low cost of fiber cabling andtransceivers. When forming a multimode link, one must use multimode transceivers as well as multimodecabling. Multimode fiber cable is generally specified as two numbers such as 62.5/125 µm or 50/125 µm.This specification implies a core size of 62.5 µm in diameter and a cladding size of 125 µm. 62.5/125 µmcabling is generally the most popular, followed by 50/125 µm. For historical reasons, 62.5/125 µm cablinghas a large install base. However, 50/125 µm cabling is generally recommended for all new installations toallow for an upgrade path to gigabit (and beyond) speeds.Multimode fiber cable is called multimode because the light used to transmit the data actually travelsmultiple paths within the fiber core. The fiber cable is designed with a core and cladding index differenceto keep the majority of light energy within the fiber so that the light ’bounces’ around. At the other end ofthe fiber, a data signal is composed of the light beams that took straight paths through the center of thecore, as well as the light beams that ’bounced’ around. This bouncing-around phenomenon is calledmodal dispersion. Modal dispersion is the primary characteristic that limits multimode fiber cable linkdistances.The major benefits of multimode fiber are as follows. Multimode fiber is relatively easy to work with. Because of multimode fiber's larger core size, light is easily coupled to and from multimode fiber. Multimode fiber can be used with both lasers and LEDs as sources. Coupling losses are less than those of single-mode fiber.The drawback of multimode fiber is that because many modes are allowed to propagate (a function ofcore diameter, wavelength, and numerical aperture), multimode fiber suffers from modal dispersion. Theresult of modal dispersion is bandwidth limitation, which translates into lower data rates.1.2.3Single-Mode Communication LinksSingle-mode communication links are less common than multimode links, but single-mode communicationlinks are quickly gaining ground when longer link distances ( 3 km) are required. When constructing asingle-mode link, the engineer must use single-mode transceivers with single-mode cabling. Single-modefiber is also specified as two numbers such as 9/125 µm. The two numbers imply a core of just 9 µm, anda cladding 125 µm in diameter.9/125 µm cabling is generally the most common, followed by 8/125 µm. Single-mode cabling is typicallyslightly more expensive that the multimode counterparts, but can reach distances up to 10 or 20 timesfarther. The whole idea behind a single-mode link path is that light carrying the data travels a single path.Light energy that strays away from the center path leaves the core and becomes trapped in the claddingdue the properties of single-mode cabling. Because almost all the light received at the opposite endtravels approximately the same path, modal dispersion (or timing jitter) is no longer a factor. The primarydistance-limiting factor for single-mode links is signal power (or amplitude).TIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated3
System Description1.3www.ti.comTransmission WindowsOptical fiber transmission uses wavelengths that are in the near-infrared portion of the spectrum. Thesewavelengths are just above the visible spectrum, and therefore undetectable to the unaided eye. Typicaloptical transmission wavelengths are 850 nm, 1310 nm, and 1550 nm. Both lasers and LEDs are used totransmit light through optical fiber. Lasers are usually used for 1310-nm or 1550-nm single-modeapplications. LEDs are used for 850-nm or 1300-nm multimode applications. These ranges are thewavelength ranges that optical fiber transmission operates best.1.3.1Fiber-Optic StandardsTable 1. Fiber-Optic StandardsWAVELENGTHMODE850 nmMultimode1300 nmMultimode1310 nmSingle-mode1550 nmSingle-modeThese wavelengths were chosen because they best match the transmission properties of available lightsources with the transmission qualities of optical fiber.1.3.2Advantages of Fiber-Optic 1.3.3 4Galvanic isolated and robust communication interfaceCabling distance is greater than UTP cable to meet demand of widely range (communicate over longerdistances) and reduced communication failuresHarsh environment capability: electromagnetic interference (EMI) immunity (insensitive to EMI), hightemperature, high pressure, high voltageNo grounding is requiredIntrinsically safeSmall size and lightweightIntegrated telemetry: fiber itself is a data linkWide bandwidthHigh sensitivityDisadvantages of Fiber-OpticMore challenge for cable installationMust use expensive fiber-optic cable and connectorsNeed for more expensive optical transmitters and receiversCannot carry electricity to operate or power terminal devicesIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments IncorporatedTIDU366 – July 2014Submit Documentation Feedback
System Descriptionwww.ti.com1.4Ethernet Fiber-OpticCopper-based Ethernet connections are limited to a data transmission distance of only 100 meters whenusing unshielded twisted pair (UTP) cable. By using fiber conversion solution, fiber-optic cabling can beused to extend data transmission over greater distances. An Ethernet with fiber can also be used wherethere is high level of EMI, which is a common phenomenon found in industrial plants. This interferencecan cause corruption of data over copper-based ethernet links. Data transmitted over fiber-optic cable,however, is completely immune to this type of noise.Since fiber can transport more data over longer distances than copper cabling, increased distancesprovide the ability to reach more users and equipment. Fiber has complete immunity to electricalinterference, and provides higher security than copper cabling because fiber has no electro-magneticemission. These characteristics have made fiber an ideal medium for commercial, utility, government, andfinancial networks. Distances supported by fiber network infrastructure are limited mostly by the opticalpower, or brightness, supplied by the active hardware interface. Fiber distances can range from 300meters to 140 kilometers, depending on the type of media converter, cable, wavelength, and data rate.The use of Ethernet fiber-optics in LANs has increased due to the inherent advantages of fiber and highdata rates can be maintained without electromagnetic (or radio-frequency) interference. Fiber offers highervoltage isolation, intrinsic safety, and elimination of ground loops in geographically-large installations.This reference design platform demonstrates the advanced performance of the TLK10xL Ethernet PHYtransceiver devices. The brick provides an IEEE 802.3u 100BASE-FX fiber Interface. This referencedesign operates from a single power supply (5 V with on-board regulator or 3.3 V ). All other voltagesrequired for the Ethernet PHY transceiver are generated internally within the device.This Ethernet PHY brick reference design enables Texas Instruments' customers to quickly design andrelease to market systems using TI industrial Ethernet PHY transceiver devices. A 50-pin interface hasbeen provided to interface with a 32-bit Cortex M4 processor-based controller board. The board has beendesigned in a small (2 inches x 3 inches) form factor, which makes it easy to fit into any of the presentproducts.2Design FeaturesTable 2. Design FeaturesEthernet PHYThe Ethernet fiber-optic interface1300 nm, multimode, Ethernet 100 base-FXPower consumptionSingle Supply: 275 mW, 850 mW for fiber-opticPower supplyThe device is designed for power-supply flexibility and canoperate with a single 3.3-V power supplyPower input optionsTLK105L Ethernet PHY features:Industrial temperature rating: –40 C to 85 CConfigurable PHY addresses – resistor strappingMII or RMII – resistor strapping options 5 V from external 2-pin connector 5-V DC input from MII and on-board regulator to generate3.3 V 3.3-V DC input from MII interface with no on-boardregulatorMAC – controller interface50-pin MII interface connectorClock25-MHz crystal with internal oscillatorStatus LEDsTwo LEDs[(Link and activity with option to configure as Pull Up (PU) or PullDown (PD)]ESDIEC61000-4-2 – Level 3 , Criteria BTIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated5
Block Diagram3www.ti.comBlock Diagram5 V 1.8 VTPS71518DCKROptional5 V 3.3 VTPS75433QFWPStatus LEDs - 2Optional3.3 VAFBR5803Z10/100 PHY TLK105LMII/RMII50 PinSDCCMII/RMII interface to CPUPopulate any one optionCrystal25 MhzClock SourceOscillatorCDCE913PW Crystal 25M I2CPHY - ConfigFigure 2. Block Diagram6Industrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments IncorporatedTIDU366 – July 2014Submit Documentation Feedback
Board Pictureswww.ti.com4Board PicturesFigure 3. Board Picture –Top5Figure 4. Board Picture – BottomHighlighted ProductsFor more information on each of these devices, see the respective product folders at www.ti.com.5.1Single Port 10/100 Mbs Ethernet Physical Layer TransceiverThe Ethernet PHY used in the reference design is TLK105L. The major features of the Ethernet PHY aredescribed as follows.5.1.1MAC Data Interface (MII)TLK105L is a single port 10/100 Mbs Ethernet physical layer transceiver. In this reference design, theEthernet PHY brick is interfaced to the MAC through the MII interface.5.1.2Bootstrap ConfigurationProvision is provided to configure the PHY through resistors. The details are provided in Section 6.5.1.3LEDAn option for two LEDs has been provided. Activity LinkThe LEDs can be configured as active pull-up or active pull-down.TIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated7
Highlighted Products5.1.4www.ti.comClock CircuitFor the MII interface, the clock source is a 25-MHz crystal with internal oscillator.5.2Ethernet - Fiber Transceiver - 100BASE-FXThe TLK10xL supports 100Base-FX signaling via an external optical transceiver. AFBR-5803Z/ FDDI, 100Mb/s ATM, and Fast Ethernet Transceiver is used in this design.5.3MII (MAC) - Controller InterfaceThe interface to the controller is through a 50-pin high speed connector. The male connector is mountedon the controller board, and the female connector is on the Ethernet PHY brick board. The femaleconnector has the MII interface signals and the power input (5-V DC or 3.3-V DC).5.4Power SupplyThe Ethernet PHY operates on a single power supply. The Ethernet PHY brick board can be powered by: External 5 V 5 V from the controller board 3.3 V from the controller board5.4.1FilteringThe required filter capacitors have been provided in the reference design.8Industrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments IncorporatedTIDU366 – July 2014Submit Documentation Feedback
Circuit Design and Component Selectionwww.ti.com6Circuit Design and Component Selection6.1Single Port 10/100 Mbs Ethernet Physical Layer Transceiver6.1.1MAC Data Interface (MII)TLK105L is a single port 10/100 Mbs Ethernet physical layer transceiver which has the signals for the MIIinterface shown in Figure 5.PHYMACTX CLKTX CLKTX ENTX ENTXD [3:0]TXD [3:0]RX CLKRX CLKRX DVRX DVRX ERRX ERRXD [3:0]RXD [3:0]CRSCRSCOLCOLFigure 5. MII SignalingThe Media Independent Interface (MII) is a synchronous, 4-bit wide nibble data interface that connects thePHY to the CPU MAC in 100B-TX and 10B-T modes. The MII is fully compliant with IEEE802.3-2002clause 22.The MII signals are summarized as follows: Data signals TXD [3:0],RXD [3:0] Transmit and receive-valid signals TX EN,RX DV Line-status signals CRS (carrier sense) COL (LED LINK )Additionally, the MII interface includes the carrier sense signal CRS, as well as a collision detect signalCOL. The CRS signal asserts to indicate the reception of data from the network or as a function oftransmit data in half-duplex mode. The COL signal asserts as an indication of a collision, which can occurduring half-duplex operation when both transmit and receive operations occur simultaneously.TIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated9
Circuit Design and Component Selection6.1.2www.ti.comBootstrap ConfigurationBootstrap configuration is a convenient way to configure the TLK10xL device into specific modes ofoperation. Some of the functional pins are used as configuration inputs, as shown in Figure 6. The logicstates of these pins are sampled during reset and are used to configure the TLK10xL device into specificmodes of operation. Table 3 describes bootstrap configuration. A 2.2-kΩ resistor is used for pull-down orpull-up to change the default configuration. If the default option is desired, there is no need for externalpull-up or pull-down resistors. Because these terminals may have alternate functions after reset is deasserted, these terminals must not be connected directly to VCC or GND.Table 3. Bootstrap ConfigurationTERMINALCOMPONENTSOF THE BOARDDESCRIPTIONPHYAD0 (COL)R52, R53PHYAD1 (RXD 0)R64,PHYAD2 (RXD 1)R65,PHYAD3 (RXD 2)R66,PHY Address [4:0]: The TLK10xL provides five PHY address terminals, the states ofwhich are latched into an internal register at system hardware reset. The TLK10xLsupports PHY Address values 0 ( 00000 ) through 31 ( 11111 ). PHYAD [4:1]terminals have weak internal pull-down resistors, and PHYAD [0] has a weak internalpull-up resistor, setting the default PHYAD if no external resistors are connected.PHYAD4 (RXD 3)R67AN 0 (LED LINK)R46, R51AN 0: FD-HD config. FD pull-up.The default wake-up is autonegotiation enable 100BT.AN 0 Forced Mode010Base-T, Half-duplex100Base-TX, Half-duplex110Base-T, Half- or full-duplex100Base-TX, Half- or full-duplexLED CFG (CRS)R69LED Configuration: This option selects the operation mode of the LED LINK terminal(the default mode is Mode 1). All modes are also configurable via register access. SeePHY Control Register (PHYCR), Address 0x0019.AMDIX EN(RX ER)R70Auto-MDIX Enable: This option sets the Auto-MDIX mode. By default, it enables AutoMDIX. An external pull-down resistor disables Auto-MDIX mode.MII MODE(RX DV)R63MII Mode Select: This option selects the operating mode of the MAC data interface.This terminal has a weak internal pull-down, and it defaults to normal MII operationmode. An external pull-up causes the device to operate in RMII mode.3 3V R65 22.2kR6422.2kRX ER1RX DV1R702.2kR63222.2k2CRS1R692.2kIGNOREGNDFigure 6. Configuration Pins10Industrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments IncorporatedTIDU366 – July 2014Submit Documentation Feedback
Circuit Design and Component Selectionwww.ti.com6.1.3LEDThe TLK10xL devices support the use of two LEDs. The LEDs can be configured for pull-up or pull-downusing the resistors as shown in Figure 7.3 3V PS1R503 3V PS212.2kR510LD31222.2kR520R49LED LG L29K-G2J1-24-ZR82470LD41R802LED LG L29K-G2J1-24-ZLED LINK470COLLD2R76R46024701R77LD5R831R530LED LG L29K-G2J1-24-Z2247012.2k1LED LG L29K-G2J1-24-ZR8122.2kGNDGNDFigure 7. LEDTIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated11
Circuit Design and Component Selection6.1.4www.ti.comClock Circuit [Clock In (XI) Requirements]The TLK10xL supports an external CMOS-level oscillator source or an internal oscillator with an externalcrystal. The use of a 25-MHz, parallel, 20-pF load crystal is recommended if a crystal source is desired.Figure 8 shows a typical connection for a crystal resonator circuit. The load capacitor values will vary withthe crystal vendors; check with the vendor for the recommended loads.The oscillator circuit is designed to drive a parallel-resonance AT-cut crystal with a minimum drive level of100 μW and a maximum of 500 μW. If a crystal is specified for a lower drive level, a current limitingresistor must be placed in series between XO and the crystal. As a starting point for evaluating anoscillator circuit, if the requirements for the crystal are not known, set the values for CL1 and CL2 at 33pF, and set R1 at 0 Ω. Specifications for a 25-MHz crystal are listed in Table 4.XIXOR1CL1CL2S0340-01Figure 8. Crystal Oscillator CircuitTable 4. 25-MHz Oscillator SpecificationsPARAMETERTEST Operational temperature 50ppmFrequency stability1 year aging 50ppmRise / Fall time10%–90%8nsecJitter (short term)Cycle-to-cycleJitter (long term)Accumulative over 10 msSymmetryDuty cycle50psec140%Load capacitance12TYP25nsec60%15Industrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated30pFTIDU366 – July 2014Submit Documentation Feedback
Circuit Design and Component Selectionwww.ti.com6.2Ethernet - Fiber Transceiver - 100BASE-FX3 3V PSR45CT INPUT0CT INPUTPlace capacitors,inductors, andresistors close 7130C37TDP R0K10D1µHRDM B3TD-TX VccRX VccSDRDRD TX Vee2TD 560.1µF9RDP BRX VeeTDM A18C38C570.1µFAVAGO AFBR-5803ZFigure 9. Ethernet - Fiber Transceiver - 100BASE-FX6.2.1Transmitter SectionsThe transmitter section of the AFBR-5803Z utilizes 1300–nm surface-emitting, InGaAsP LEDs. Thesereceiver sections are packaged in the optical subassembly portion of the transmitter section. These LEDare driven by a custom silicon IC, which converts differential PECL logic signals, ECL referenced (shifted)to a 3.3-V supply, into an analog LED drive current.6.2.2Receiver SectionsThe receiver sections of the AFBR-5803Z utilize InGaAsPIN photodiodes coupled to a custom silicontrans-impedance preamplifier IC. These are packaged in the optical subassembly portion of the receiver.These pin and preamplifier combinations are coupled to a custom-quantizer IC which provides the finalpulse shaping for the logic output and the signal detect function. The data output is differential. The signaldetect output is single-ended. Both data and signal-detect outputs are PECL compatible, ECL referenced(shifted) to a 3.3-V or 5-V power supply.In 100BASE-FX mode, the device-transmit pins connect to an industry standard fiber transceiver withPECL signaling through a capacitively-coupled circuit. In FX mode, on the TX path, the device bypassesthe scrambler and the MLT3 encoder, enabling the transmission of serialized 5B4B-encoded, NRZI data at125 MHz. On the RX path, the device bypasses the MLT3 decoder and the descrambler, enabling thereception of serialized 5B4B-encoded, NRZI data at 125 MHz. The only added functionality in the aspectof data transmission for 100BASE-FX (compared to 100BASE-TX) is the support of far-end fault detectionand transmission.6.2.3Far-End Fault (FEF) MechanismBecause 100BASE-FX does not support autonegotiation, a far-end fault facility is included in the design.The far-end fault facility allows detection and transmission of link failures. When no signal is beingreceived as determined by the signal detect function, the device sends a far-end fault indication to the farend peer.TIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated13
Circuit Design and Component Selectionwww.ti.comThe far-end fault indication detects repeating cycles. Each cycle consists of 84 ones followed by a singlezero. The cycle pattern will not satisfy the 100BASE-FX carrier sense mechanism. However, the cyclepattern is easily detected as the fault indication. The cycle pattern will be transparent to devices that donot support far-end fault detection. The far-end fault detection process continuously monitors the receivedata stream for the far-end fault indication. When detected, the link monitor is forced to de-assert linkstatus, causing the device to begin transmitting far-end fault signaling to the far-end peer.6.3MII(MAC) - Controller InterfaceThe Ethernet PHY has been interfaced and tested with the TM4C129XNCZAD 32-bit ARM Cortex M4F MCU. The drivers required to interface TLK105L to the MCU are available.5V PSD12J4R4TX ENTXD0TXD1TXD2TXD3COLCRSMDIOMDCTX CLKR170100R3100R1100R2R6C1115pF25M 50M REFR26R23R5100100100R8RXD3RXD2RXD0RXD1RX DVRX CLKRX ER100100TX CLK 1R180R10TXD 0TXD 1TXD 2TXD 4749R25100R27100TX CLK 2100100R28100R24100RXD 3RXD 2RXD 0RXD 1100R62RX CLK 1100ENO INTGND3 3V PS 4161820222426283032343638404244464850GNDR13RESET N33C815pF1 5V PS3 3V PS EGNDMH1MH2GNDERF8-025-05.0-L-DV-K-TRGNDGNDFigure 10. MII (MAC) - Controller Interface14Industrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments IncorporatedTIDU366 – July 2014Submit Documentation Feedback
Circuit Design and Component Selectionwww.ti.com6.4Power SupplyThe Ethernet PHY can be powered by a single 3.3-V supply.3.3VSupply10mF3.3VSupply10nF1nF100pFPin 14(AVDD33)Pin 9(RD–)3.3VSupply49.9W1:10.1mF1m FRD –49.9W0.1μFPin 13(PFBIN1)Pin 15(PFBOUT)10μFPin 24(PFBIN2)Pin 10(RD )RD 1m FPin 11(TD–)0.1mF 0.1μFTD –3.3VSupply49.9WTD 1m F0.1μF0.1mF 1:10.1mF 1m FT1RJ4549.9WPin 12(TD )Pin 21(VDD IO)3.3VSupply100pF 1nF10nF10mFFigure 11. Power Connections for Single Supply OperationTIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated15
Circuit Design and Component Selectionwww.ti.comThe Ethernet PHY brick board can be powered by either of the following two methods as shown inFigure 12 and Figure 13.5V PSD12KAD21DFLS1200-71212AKDFLS1200-7J1GNDFigure 12. Powered By External 5 V or 5 V from the Controller Board3.3V PSU44C29100µFC350.22µFR780IGNORER7956073 3V PS EGND3 3V 3 3V PS17R3247016151423GND/HTSK13LD1LED LG L29K-G2J1-24-Z1211TPS75433QPWP12PWRPAD15V PS21GNDGNDFigure 13. Powered By 3.3 V from the Controller Board6.4.1FilteringBypass the power rails with the following low-impedance surface mount capacitors: 10 μF, 10 nF, 1 nF,and 100 pF. To reduce EMI, place the capacitors as close as possible to the component’s VDD supply pins,preferably between the supply pins and the vias connecting to the power plane. In some systems, it maybe desirable to add 0-Ω resistors in series with supply pins, as the resistor pads provide flexibility byadding an EMI bead when the design needs to meet system–level certification and testing requirements.PCBs should have at least one solid ground plane and one solid VDD plane to provide a low impedancepower source to the component. This also provides a low impedance return path for non-differential digitalMII and clock signals. Place a 10.0-µF capacitor near the PHY component for local bulk bypassingbetween the VDD and ground planes. The rise time of the VDD should typically be 500 µs.Table 5. Power Consumption at 3.3 V16PARAMETERSPOWER (MAX)Ethernet PHY – single supply270 mWFiber-optic – transmit600 mWFiber-optic – receive250 mWTotal1220 mWIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments IncorporatedTIDU366 – July 2014Submit Documentation Feedback
Circuit Design and Component Selectionwww.ti.com6.54.5 Fiber-Optic Cords Ideal for Ethernet ApplicationsFigure 14. Fiber-Optic CordsFiber-optic patch cords are ideal for high data-rate systems including FDDI, multimedia, Ethernetbackbone, ATM, or any network that requires the transfer of large and time-consuming files.Features Ideal for use in Ethernet applications High bandwidth supporting longer distancesTable 6. Major Specifications for Fiber-Optic Cords for Ideal Use in Ethernet ApplicationFirst connectorSC duplexSecond connectorSC duplexCable diameter0.12" (3 mm)Cable typeBuffered fiberFiber type62.5/125Length - overall16.4' (5 m)TypeMultimode, duplexSC Connector The SC connector is a fiber-optic connector, with a push-pull latching mechanism which provides quickinsertion and removal, while also ensuring a positive connection. The SC connector has been standardized as FOCIS 3 (Fiber Optic Connector IntermateabilityStandards) in EIA/TIA-604-03.TIDU366 – July 2014Submit Documentation FeedbackIndustrial Ethernet PHY Brick with Fiber-OpticCopyright 2014, Texas Instruments Incorporated17
Circuit Design and Component Selection6.6www.ti.comPCB Dimensions and Physical LayoutFigure 15. PCB Dimensions and Physical LayoutPCB DimensionsTotal dimensions - the current board is 3 inch 2 inches. The board has provisions for the following: Power supply Ethernet PHY and associated components RMII interfaceThe size can be reduced based on the application.PCB Physical Layout FR4 material Trace impedance - differential impedance 100 ohms, 5% Uniform
Avago AFBR5803Z. Fiber Transceiver Interface for . 1.1 Basic Fiber-Optic Communication System Fiber-optics is a medium for carrying information from one point to another in the form of light. Unlike the copper form of transmission, fiber-optics is not electrical in nature.
OLD BRICK ORIGINALS THIN BRICK VENEER Page 10 FAST ADHESIVE METHOD Step 1: Install the Cement Fiberboard Secure the fiberboard to your wall studs using 3/4” screws. Be sure to countersink the screws so the brick can bond properly to the board. File Size: 2MBPage Count: 12Explore furtherRecommended Application Guidelines for Adhered Thin Brick .www.interstatebrick.comThin Brick Veneerwww.gobrick.comDesigning & Detailing Adhered Veneer Systems . - BRICK-ITbrickit.comRecommended to you b
MIPI CSI-2 RX Subsystem v2.2 www.xilinx.com 6 PG232 April 05, 2017 Chapter 1: Overview Sub-Core Details MIPI D-PHY The MIPI D-PHY IP core implements a D-PHY RX interface and provides PHY protocol layer support compatible with the CSI-2 RX interface. See the MIPI D-PHY LogiCORE IP Product Guide (PG202) [Ref 3] for details. MIPI D-PHY .
VI-4 Programs of Study (Section VI) PHI 215, PHI 230, PHI 240 PHy 110, PHy 110a, PHy 151, PHy 152, PHy 251, PHy 252 POL 110, PoL 120, POL 210, POL 220 Psy 150, PSY 231, PSY 237, PSY 239, PSY 241, PSY 281 REL 110, REL 211, REL 212, REL 221 RUS 111, RUS 112, RUS 211, RUS 212 soC 210, SOC 213, SOC 220, SOC 225, SOC 240 SPA 111, SPA 112, SPA 161, SPA 211, SPA 212
Thin Brick meet ASTM C1088 standard specification for Thin Veneer Brick Units made from clay or shale. In this specification, the term thin veneer brick shall be understood to mean clay masonry unit with a maximum thickness of 1-3/4". Grade Exterior Belden Brick manufactures thin brick to meet Grade Exterior with a weathering index of SW. Types
PHY Fabric Software Master IF Display Processor PHY Slave IF PHY Slave IF Ethernet PHY Slave IF USB PHY Master IF SlaveIF CPU Master IF SoC Embedded SW Debugger RSP . Trace Capture, Trace Control and DDR Controler are Accurate mod
153 1673195 TANU AGRAWAL Sc/Maths/Phy Edu 154 1673196 TOKIR ANWAR Sc/Maths/Phy Edu 155 1673197 TUSHAR UPADHYAY Sc/Maths/Phy Edu 156 1673198 VAIBHAV JAIN Sc/Maths/Phy Edu 157 1673199 VEDANT GOYAL Sc/Maths/Phy Edu 158 1673200 VEDANT SHARMA Sc/Ma
Access Control and Physical (MAC-PHY) network layers—to edge locations. This paper focuses on monitoring the video quality carried on the Remote PHY (R-PHY) Distributed Access Architecture (DAA) networks. In the R-PHY architecture, the CCAP Core at the headend includes the DOCSIS MAC and upper network layers for the DOCSIS protocols. The
Chapter 35 MIPI-CSI PHY 35.1 Overview . The MIPI D-PHY . is compliant with the MIPI D-PHY interface specification, revision 1.1. The . D-PHY can be reused for both master and slave applications. The la. ne modules are . bidirectional with HS-TX, HS-RX, LP-TX, LP-RX, and LP-CD functions. The D-PHY
