Manuale d’uso / di manutenzione del prodotto HPL-D SLLU064A del fabbricante Texas Instruments
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January 2004 HPL-D SLLU064A 4x4 Crosspoint Switch EVM Us e r ' s G u i d e User's Guide.
IMPO RT A NT NOT ICE Texas Instr uments Incorpor ated and i ts su bsidiaries (TI) re serve the ri ght to ma ke corre ctions, mo dificat ions, enhance ments, improvement s, and other cha nges to its pro ducts and serv ices at any time and to discon tinue any produc t or service w ithout notice.
3 www.ti.com EVM IMPORTANT NOTICE Texas Instru ments (T I) provide s the enclo sed product( s) und er the follow ing condi tions: This evalu ation kit b eing s old by TI i s intended f or use f or ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not cons idered by TI to be fit for commercia l use.
EVM WARNINGS AND RESTRICTIONS It is importa nt to opera te this EVM within the in put voltage r ange of -0.7 V to 4 V and t he ou tput voltage r ange of -0.5 V to 4 V. Exceeding the sp ecifie d input range may cause unex pected operat ion and/or irrev ersibl e damage to the EVM.
iii Preface Read This First About This Manual This evaluatio n module ( EVM) user ’s guid e descr ibes the h ardware, the ory of operati on, and use of the EV M for eval uating the high-s peed perform ance and func tionalit y of either the S N65LVD S125A or SN65LVDS 250 4x4 cr osspoint s witches.
iv Korea 08 0-551-280 4 Malaysia 1- 800-80-397 3 Netherlan ds (Englis h) +31 (0) 546 87 95 45 New Zeala nd 0800-446- 934 Phillippi nes 1-800-76 5-7404 Singapor e 800-886- 1028 Spain +3 4 902 35 4 0 28.
v Contents Read Th is Firs t ................................................................................................................ iii About This M anual.......................................................................................
Tables vi Figure 3-6. Lay er 4–Vcc01 Plane ..................................................................................3-6 Figure 3-7. Lay e r 5–GND Plane ....................................................................................3-6 Figure 3-8.
1-1 Chapter 1 1 Overview This chapter provi des a hig h-level desc ription of the 4x 4 crosspoint s witch EVM m ounted with ei ther a SN6 5LVDS125 A, 4x4 1.5- Gbps or a SN65LVDS 250, 4x4 2 .5-Gbps cros spoint switc h. Topic Page 1.1 Sample Functio nal Confi gurations 1-2 1.
1 Overv iew 1-2 1.1 Sample Functional C onfigurations The 4x 4 crosspoint s witch is a full y non-bl ocking sw itch that pr ovides flexibi lity in s witch conf iguratio n for the desired ap plic ation. A sam ple of vari ous functi ons for which the E VMs can be config ured is shown in Figure 1- 1.
1 Overv iew 1-3 Figure 1-2 shows the 4x 4 crosspoint s witch EVM (part num ber SN65LVDS 125A or SN6 5LVDS250). The EVM c omes with either th e SN65LVDS 125A or SN6 5LVDS250 installed and a co py of the data s heet. The lates t versio n of the da ta sheet is a lso avail able from www.
1 Overv iew 1-4 1.2 Signal P aths The s ignal paths on this EV M (see Fi gure 1-3) inc lude: ❏ ❏ ❏ ❏ Sixteen e dge-launc h SMA connectors ( J1–J16) for high-s peed data trans miss ion ❏ .
2-1 Chapter 2 2 Setup and Required Equipment Both the SN 65LVD S125A and the SN6 5LVDS250 L VDS driv er output character istics are c ompli ant with t he requirem ents of the T IA/EIA-6 44 standard. LVDS dri vers nom inally provid e a 350- mV dif ferential s ignal, wit h a 1.
2 Setup an d Requir ed Equipment 2-2 DA TA, D AT A A mpl it ude: 400 mV Off s e t : 0 . 0 V DA T A , D A TA Am pl itu d e: 400 m V Offset: 0.0 V ` U1 1 J18 J2 0 VTE RM GN D J4 J3 J1 J2 J1 5 J16 J14 J1.
2 Setup an d Requir ed Equipment 2-3 Table 2-1 Crosspoint Function Table Output Channel 1 Output Channel 2 Output Channel 3 Output Channel 4 Control Pins Input Selected Control Pins Input Selected Con.
2 Setup an d Requir ed Equipment 2-4 2.2 Observing an Out put In order to m inim ize the paras itic capacita nce in hig h-speed m easurem ents (probe cap acitance), th e 4x4 c rosspoint s witch EV M provides a n offs et power pla ne (layer 5) .
2 Setup an d Requir ed Equipment 2-5 Figure 2-3. Typical Test Results..
2 Setup an d Requir ed Equipment 2-6.
EVM Cons truction 3-1 Chapter 3 3 EVM Construction This chapter prese nts the sc hematic s, board layouts , fabricat ion inform ation, and th e bill of m aterials. Topic Page 3.1 Schematic 3-2 3.2 Board Lay out Patterns 3-3 3.3 PCB Fabri cation Require ments and Stack Up 3-8 3.
3-2 3.1 Schemati c Figure 3-1. 4x4 Crosspoint Switch EVM Schematic SN65LVD S125A or SN65LVD S250 U1.
3 EVM Cons truction 3-3 3.2 Board Lay out Patterns Figure 3-2. 4x4 Crosspoint Switch EVM Board Layout 4X4 Crosspoi nt Switch EVM SN65LVDS 125A SN65LVDS 250 A/W # 6456526.
3-4 Figure 3-3. Layer 1–Signal Plane.
3 EVM Cons truction 3-5 Figure 3-4. GND Plane Figure 3-5. Layer 3–Vcc.
3-6 Figure 3-6. Layer 4–Vcc01 Plane Figure 3-7. Layer 5–GND Plane.
3 EVM Cons truction 3-7 Figure 3-8. Layer 6–GND/Signal Plane.
3-8 3.3 PCB Fabrication Req uirements and St ack Up Stackup Signa l: La y er 1 Notes: 1. PW B TO BE FABRI CATED TO MEET OR EXCEED I PC-6012 , CLASS 3 STANDARDS AND W O RKMANSHIP SHALL CONFO RM TO IP C-A- 600, CLASS 3 CURRENT REVISIO NS 2. B OA RD MATERI AL AN D CONST RUCTI ON T O B E UL APPROVED AND MARKED O N THE FINI SHED BOARD.
3 EVM Cons truction 3-9 3.4 Bill of Materials Table 3-2. Bill of Materials f or SN65LVDS125A / SN65LVDS250 EVM Item 6456526-1 Qt y 6456526-2 Qt y 6456526-3 Qt y Description Pattern Reference Designator 1 9 9 9 0.001 µF 402 C2, C3, C4, C5, C6, C7, C8, C9, C10 2 2 2 2 0.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Texas Instruments HPL-D SLLU064A è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Texas Instruments HPL-D SLLU064A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Texas Instruments HPL-D SLLU064A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Texas Instruments HPL-D SLLU064A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Texas Instruments HPL-D SLLU064A, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Texas Instruments HPL-D SLLU064A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Texas Instruments HPL-D SLLU064A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Texas Instruments HPL-D SLLU064A insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
