Manuel d'utilisation / d'entretien du produit USB2512B du fabricant SMSC
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SMSC USB251x Hub Family DA T ASHEET Revision 1.0 (3-1 1- 09) Datasheet PRODUCT FEA TURES USB2512/12A/12B USB2513/13B USB2514/14B USB2517 USB 2.0 Hi-S peed Hub Controller General Description The SMSC USB251x hub is a family of low-power , OEM configurable, MTT (multi tran saction translator) 1 hub controller IC products for embedded USB solutions.
ORDER NUMBERS: Note: USB251xB/USB251xBi products have not yet been rel eased. They are featured in this datasheet as a prelimina ry product preview . ORDER NUMBERS LEAD-FREE ROHS COMPLIANT PACKAGE PACKAGE SIZE T EMPERATURE RANGE USB2512-AEZG USB2512A-AEZG USB2512B-AEZG USB2513-AEZG USB2513B-AEZG USB2514-AEZG USB2514B-AEZG 36QFN 6 x 6 x 0 .
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 3 Revision 1.0 (3-1 1-09) DA T ASHEET T able of Content s Chapter 1 USB251x Hub Family Differences Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chapter 2 General Description .
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 4 SMSC USB251x DA T ASHEET 9.1 Maximum Guaranteed Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 9.2 Operating Conditions .
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 5 Revision 1.0 (3-1 1-09) DA T ASHEET List of T ables Table 1.1 36-pin QFN (6x6x0.5 mm) RoHS Compliant Part Numb ers . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 1.2 48-pin QFN (7x7x0.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 6 SMSC USB251x DA T ASHEET List of Figures Figure 4.1 USB251x Hub Family Block D iagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 Figure 5.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 7 Revision 1.0 (3-1 1-09) DA T ASHEET Chapter 1 USB251x Hub Fami ly Differences Overview T able 1.1 36-pin QFN (6x6x0.5 mm) RoHS Complian t Part Numbers T able 1.2 48-pin QFN (7x7x0.5 mm) RoHS Complian t Part Numbers T able 1.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.0 (3-1 1-09) 8 SMSC USB251x DA T ASHEET Chapter 2 General Description The SMSC USB251x h ub family is a group of l ow-power , OEM configurable, MTT (multi transaction translator) 1 h ub controller IC’s with downstre am ports for embedded USB soluti ons.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 9 Revision 1.0 (3-1 1-09) DA T ASHEET Supports custom string descriptors (up to 31 characters): - Product string - Manufacturer string - Ser.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 10 SMSC USB251x DA T ASHEET Chapter 3 Acronyms I 2 C ® : Inter-Integrated Circuit 1 OCS: Over-Current Sense PCB: Printed Circuit Boa.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 1 1 Revisio n 1.0 (3-1 1-09) DA T ASHEET Chapter 4 Block Diagram Figure 4.1 USB251x Hub F amily Block Diagram Note 4.1 USB2512A/USB2512Ai only su pports a single transaction translator . Note 4.2 The LED port indica tors only apply to USB2513 /14 (48QFN only) and USB2517/17i.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 12 SMSC USB251x DA T ASHEET Chapter 5 Pin Descriptions This chapter is organi zed by a set of pin config ur ations (organized by package type) followed by a corresponding pin list organized al phabetically .
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 13 Revision 1.0 (3-1 1-09) DA T ASHEET Figure 5.2 3-Po rt 36-pin QFN Note: *Battery charging enable (BC_ EN) is only available in the USB251xB/Bi.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 14 SMSC USB251x DA T ASHEET Figure 5.3 4-Po rt 36-pin QFN Note: *Battery charging enable (BC_ EN) is only available in the USB251xB/Bi. Ground Pad (must be connected to VSS) SMSC USB2514/14i USB2514B/14Bi (Top View QFN-36) Indicates pins on the bottom of the device .
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 15 Revision 1.0 (3-1 1-09) DA T ASHEET Figure 5.4 3- Port 48-Pin QFN Ground Pad (must be connected to V SS) SMSC USB2513 (Top View QFN-48) PRTPW.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 16 SMSC USB251x DA T ASHEET Figure 5.5 4- Port 48-Pin QFN Ground Pad (must be connecte d to VSS) SMSC USB25 14 (Top View QFN-4 8) PRT.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 17 Revision 1.0 (3-1 1-09) DA T ASHEET Figure 5.6 7- Port 64-Pin QFN Ground Pad (must be connected to VSS) SMSC USB2517/17i (Top View QFN-64) US.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 18 SMSC USB251x DA T ASHEET T able 5.1 Pin List in Alphabe tical Order SYMBOL NAME PIN NUMBE RS 36 QFN 48QFN 64 QFN USB2512 USB2512i .
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 19 Revision 1.0 (3-1 1-09) DA T ASHEET NC No Connect 6 - 8 1 1 - NC 7 - 9 - NC 18 - 1 1 - NC 19 - 12 - NC 8 - 13 - NC 9 - 27 - NC 20 - 28 - NC 2.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 20 SMSC USB251x DA T ASHEET PRTPWR[1] USB Port Power Enable 12 15 29 PRTPWR[2] 16 19 26 PRTPW R[3] - 18 21 23 PRTPWR[4] - 20 - 27 20 .
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 21 Revision 1.0 (3-1 1-09) DA T ASHEET USBDM_DN[1] Hi-S peed USB Data 1 USBDM_DN[2] 3 USBDM_DN[3] - 6 USBDM_DN[4] - 8 - 8 USBDM_DN[5] - 1 1 USBD.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 22 SMSC USB251x DA T ASHEET 5.2 USB251x Pin Descriptio ns (Grouped by Function) T able 5.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 23 Revision 1.0 (3-1 1-09) DA T ASHEET DOWNSTREAM USB 2.0 IN TERFACES (continued) LED_A_N[x:1] / PRTS WP[x:1] I/O12 Port LED Indicators This pin will be ac tive low when LED support is e nabled via EEPROM or SMBus.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 24 SMSC USB251x DA T ASHEET DOWNSTREAM USB 2.0 IN TERFACES (continued) LED_B_N[2:1] / BOOST[1:0] I/O12 Enhanced Indicator Port LED for po rts 1 and 2 Enhanced indicator L ED for ports 1 and 2.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 25 Revision 1.0 (3-1 1-09) DA T ASHEET SERIAL PORT INTERFACES SDA / SMBDA T A / NON_REM[1] I/OSD12 Serial Data signal (SDA) Server Message Block Data signal (SMBDA T A) Non-removable port strap option If this strap is enabled by package and configuration settings (see Ta b l e 8 .
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 26 SMSC USB251x DA T ASHEET MISC XT ALIN ICLKx Crystal Input 24 MHz crystal This pin connects to either one terminal of the crystal or to an external 24 MHz clock when a crystal is not used.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 27 Revision 1.0 (3-1 1-09) DA T ASHEET 5.3 Buffer T ype Descriptions SEL48 I 48 MHz Clock Input Selection 48 MHz external input clock select. When the hub is clocked from an external clock source, this pin selects either 24 MHz or 48 MHz mode.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 28 SMSC USB251x DA T ASHEET I/O12 Input/Output buffer with 12 mA sink and 12 mA source. I/OSD12 Open drain with Schmitt trigger and 12 mA sink. Meets the I 2 C-Bus specification, version 2.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 29 Revision 1.0 (3-1 1-09) DA T ASHEET Chapter 6 LED Usage Description 6.1 LED Functionality USB2513 and USB2514 (48-pin QF N only) and U SB2517 /17i SMSC hubs support two different (mutually exclusive) LED modes.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 30 SMSC USB251x DA T ASHEET Figure 6.1 shows a simple example of how this LED circuit will be implemented. The circuit should be replicated for each of the x LED pins on the SMSC hub. In this circuit, wh en the LED pin is driven to a logic low state, the Green LE D will light up.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 31 Revision 1.0 (3-1 1-09) DA T ASHEET Chapter 7 Battery Charging Support 7.1 General Description The battery charging feature is only a vailable in USB251xB (which represents USB2512B/3B/4B and USB2512Bi/3Bi/4Bi hub family pr oducts).
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 32 SMSC USB251x DA T ASHEET behaviors provide battery chargin g even when the hub is no t enumerat ed and p rotect the hub from sustained short circuit conditions.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 33 Revision 1.0 (3-1 1-09) DA T ASHEET Chapter 8 Configuration Options 8.1 Hub SMSC’s USB 2.0 hub is fully specif ication compliant to the Un iversal Serial Bus speci fication, version 2.0, April 27, 2000 (12/7/2000 and 5/28/2002 Errata).
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 34 SMSC USB251x DA T ASHEET Note: When the CFG_SEL[2] pin is u navailable, then the log ic is internally ti ed to ‘0’.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 35 Revision 1.0 (3-1 1-09) DA T ASHEET Please see the Internal Register Set (Common to EEPROM and SMBus) for a list of the available data fields. Please visit www .smsc.com/ ft pdocs/usb.html to locate the configuration ut ility for the hub EEPROM data.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 36 SMSC USB251x DA T ASHEET 8.2.1.1 Register 00h: V endor ID (LSB) 8.2.1.2 Register 01h: V endor ID (MSB) 54h-91h Product S tring R 0.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 37 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.3 Register 02h: Product ID (LSB) 8.2.1.4 Register 03h: Product ID (MSB) 8.2.1.5 Register 04h: Device ID (LSB) 8.2.1.6 Register 05h: Device ID (MSB) BIT NUMBER BIT NAME DESCRIPTION 7:0 PID_LSB Least Significant Byte of the Product ID.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 38 SMSC USB251x DA T ASHEET 8.2.1.7 Register 06h: CONFIG_BYTE_1 BIT NUMBER BIT NAME DESCRIPTION 7 SELF_BUS_PWR Self or Bus Power: Selects between Self- and Bus-Powered operation.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 39 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.8 Register 07h: Co nfiguration Dat a Byte 2 2:1 CURRENT_SNS Over-Current Sense : Selects cu rrent sensing on a port-by-p ort basis, all ports ganged, or none (only fo r bus-powered hubs).
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 40 SMSC USB251x DA T ASHEET 8.2.1.9 Register 08h: Co nfiguration Dat a Byte 3 8.2.1.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 41 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.1 1 Register 0Ah: Port Disa ble For Self-Po wered Operation 8.2.1.12 Register 0Bh: Port Di sable For Bus-Powere d Operation BIT NUMBER BIT NAME DESCRIPTION 7:0 PORT_DIS_SP Port Disable Self-Pow ered: Disa bles 1 or more ports.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 42 SMSC USB251x DA T ASHEET 8.2.1.13 Register 0Ch: Max Powe r For Self -Powered Operation 8.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 43 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.16 Register 0Fh: Hu b Controller Max Current For Bus-Powered Operation 8.2.1.17 Register 10h: Power-On Ti me 8.2.1.18 Register 1 1h: Language ID High 8.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 44 SMSC USB251x DA T ASHEET 8.2.1.22 Register 15h: Serial S tring Length 8.2.1.23 Register 16h-53h: Manufactur er String 8.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 45 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.25 Register 92h- CFh: Serial S tring 8.2.1.26 Register D0h: Battery Charging Enable 8.2.1.27 Register F6h: Boost_Up BIT NUMBER BIT NAME DESCRIPTION 7:0 SER_ST R Se rial S tring, UNICODE UTF-16LE per USB 2.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 46 SMSC USB251x DA T ASHEET 8.2.1.28 Register F7h: Boost _7:5 Note: “Boost” could result in non-USB Compliant parameters, OEM should use a ‘00’ value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 47 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.29 Register F8h: Boost _4:0 Note: “Boost” could result in non-USB Compliant parameters, OEM should use a ‘00’ value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 48 SMSC USB251x DA T ASHEET 8.2.1.31 Register FBh: PortMap 12 BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTR12 PortMap register for ports 1 & 2.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 49 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.32 Register FCh: PortMap 34 BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTR34 PortMap register for ports 3 & 4.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 50 SMSC USB251x DA T ASHEET 8.2.1.33 Register FDh: PortMap 56 BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTR56 PortMap register for ports 5 & 6.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 51 Revision 1.0 (3-1 1-09) DA T ASHEET 8.2.1.34 Register FEh: PortMap 7 BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTR7 PortMa p register for port 7.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 52 SMSC USB251x DA T ASHEET 8.2.1.35 Register FFh: S t atus/Command 8.2.2 I 2 C EEPROM The I 2 C EEPROM interface implem ents a subse.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 53 Revision 1.0 (3-1 1-09) DA T ASHEET 8.3 SMBus Slave Interface Instead of load ing User-Defined Descriptor data from an external EEPROM, th e SMSC hub can be configured to receive a code load from an externa l processor via an SMBus interface.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 54 SMSC USB251x DA T ASHEET 8.3.2.2 Block Read A block read differs from a bloc k write in that the repe ated start condition exists to sati sfy the I 2 C specification’s requirement for a ch ange in the tr ansfer direction .
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 55 Revision 1.0 (3-1 1-09) DA T ASHEET 8.3.9 S MBus Alert Response Address The SMBALERT# signal is not supported by the hub. 8.3.9.1 Undefined Register s The registers shown in Ta b l e 8 . 2 are the defined registers in the hub.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 56 SMSC USB251x DA T ASHEET 8.6.1.1 RESET_N for St rappin g Option Configuration Figure 8.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 57 Revision 1.0 (3-1 1-09) DA T ASHEET 8.6.1.2 RESET_N for EEPROM Configuration Figure 8.4 Reset_N Ti ming for EEPROM Mode Notes: When in bus-powered mode, the hu b and its associ ated circuitry must not consume more than 100 mA from the upstream USB pow er source during t4+t5+t6+t7.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 58 SMSC USB251x DA T ASHEET 8.6.1.3 RESET_N for SMBus Slave Configuration Figure 8.5 Reset_N Timing for SMBus Mod e Notes: For bus-powered co nfigurations, the 99.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 59 Revision 1.0 (3-1 1-09) DA T ASHEET 6. Complies with Section 1 1.10 of t he USB 2.0 specification for be havio r after completion of the reset sequence. The host then configures the hub and t he hub’s downstream port devices in accordance with the USB sp ecification.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 60 SMSC USB251x DA T ASHEET Chapter 9 DC Parameters 9.1 Maximum Guaranteed Ratings Note 9.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 61 Revision 1.0 (3-1 1-09) DA T ASHEET Figure 9. 1 Supply Rise Time Model T able 9.1 DC Electrical Characteristics PARAMETER SYMBOL MIN T YP MAX UNIT S COMMENTS I, IS T ype Input Buffer Low Input Leve l High Input Level Input Leakage Hysteresis (‘IS’ Only) V ILI V IHI I IL V HYSI 2.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 62 SMSC USB251x DA T ASHEET O12, I/O12 &I/OSD12 T ype Buffer Low Output Level High Output Level Output Leakage Hysteresis (‘SD’ pad only) V OL V OH I OL V HYSC 2.4 -10 250 0.4 +10 350 V V μ A mV I OL = 12 mA @ VDD33 = 3.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 63 Revision 1.0 (3-1 1-09) DA T ASHEET Supply Cur rent Configu red Hi-Speed Host, 1 downstream po rt USB2512/12A/12B USB2512i/12Ai/12Bi USB2513/.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 64 SMSC USB251x DA T ASHEET Note 9.3 Output leakage is measured w ith the current pins in hi gh impedance.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 65 Revision 1.0 (3-1 1-09) DA T ASHEET Note 9.5 Capa citanc e T A = 25°C; fc = 1 MHz; VDD33 = 3.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 66 SMSC USB251x DA T ASHEET Chapter 10 AC S pecifications 10.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24/48 1 MHz ± 350 ppm. External Clock: 50% Duty cycl e ± 10%, 24/48 MHz ± 350 ppm, Jitter < 100 ps rms.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.0 (3-1 1-09) 67 SMSC USB251x DA T ASHEET Chapter 1 1 Package Outlines Figure 1 1.1 36-Pin QFN, 6x6 mm Body , 0.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.0 (3-1 1-09) 68 SMSC USB251x DA T ASHEET Figure 1 1.2 48-Pin QFN, 7x7 mm Body , 0.5 mm Pitch.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.0 (3-1 1-09) 69 SMSC USB251x DA T ASHEET Figure 1 1.3 64-Pin QFN, 9x9 mm Body , 0.5 mm Pitch.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 70 SMSC USB251x DA T ASHEET 1 1.1 T ape and Reel S pecifications Figure 1 1 .4 36-Pin Package T ape Specifications.
USB 2.0 Hi-S peed Hub Controller Datasheet SMSC USB251x 71 Revision 1.0 (3-1 1-09) DA T ASHEET Figure 1 1 .5 48-Pin Package T ape Specifications.
USB 2.0 Hi-S peed Hub Controller Datasheet Revision 1.0 (3-1 1-09) 72 SMSC USB251x DA T ASHEET Figure 1 1 .6 36-Pin and 48-Pin Pa ckage Reel Specifications.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté SMSC USB2512B c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du SMSC USB2512B - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation SMSC USB2512B, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le SMSC USB2512B va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le SMSC USB2512B, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du SMSC USB2512B.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le SMSC USB2512B. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei SMSC USB2512B ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
