Manuel d'utilisation / d'entretien du produit USB2512Ai du fabricant SMSC
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SMSC USB2512Ai DA T ASHEET Revision 1.97 (08-1 1- 08) Datasheet PRODUCT FEA TURES USB2512Ai Industrial T emperature Rated USB 2.0 Hi-S peed 2-Port Hub Controller General Description The SMSC 2-Port Hub is a low power , OEM configurable, STT (single transaction translator) Hub controller IC with 2 downstream ports for embedded USB solutions.
ORDER NUMBER: USB2512Ai-AEZG FOR 36 PIN, QFN LE AD-FREE ROHS COMPLIANT PACKAGE Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 2 SMSC USB2512Ai DA T ASHEET 80 ARKA Y DRIVE, HAUPP AUGE, NY 1 1788 (631) 435-6000 , F AX (631) 273-3123 Copyright © 20 08 SMSC or it s subsidiaries.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 3 Revision 1.97 (08-1 1-08) DA T ASHEET T able of Content s Chapter 1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 4 SMSC USB2512Ai DA T ASHEET List of Figures Figure 1.1 USB2512Ai 36-Pin QFN (Embedded Footprint). . . . . . . . . . . . . . . . . . . . . . . . .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 5 Revision 1.97 (08-1 1-08) DA T ASHEET List of T ables Table 3.1 USB2512Ai Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 6 SMSC USB2512Ai DA T ASHEET Chapter 1 Pin Configuration Figure 1.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 7 Revision 1.97 (08-1 1-08) DA T ASHEET Chapter 2 Block Diagram Figure 2.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 8 SMSC USB2512Ai DA T ASHEET Chapter 3 Pin Descriptions 3.1 Pin Descriptions This section provides a detailed description of each signal. The signals are arranged in functional groups according to their associated interface.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 9 Revision 1.97 (08-1 1-08) DA T ASHEET RBIAS 35 I-R USB T ranscei ver Bias A 12.0k Ω (+/- 1%) resistor is attached from ground to this pin to set the transceiver ’s internal bias settings.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 10 SMSC USB2512Ai DA T ASHEET XT AL2 32 OCLKx Crystal Output 24MHz Crystal This is the other terminal of the crystal, or a NO CONNECT when an external clock source is used to drive XT AL1/CLKIN.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 1 1 Revision 1.97 (08-1 1-08) DA T ASHEET T able 3.2 SMBus or EEPROM Interface Behavior CFG_SEL1 CFG_SEL0 .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 12 SMSC USB2512Ai DA T ASHEET 3.2 Buffer T ype Descriptions T able 3.4 Buffer T y pe Descriptions BUFFER DESCRIPTION I/O Input/Output. IPD Input with internal weak pull -down resistor .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 13 Revision 1.97 (08-1 1-08) DA T ASHEET Chapter 4 Configuration Options 4.1 2-Port Hub SMSC’s USB 2.0 2-Port Hub is fully specification co mpliant to the Universal Serial Bus S pecifica tion Revision 2.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 14 SMSC USB2512Ai DA T ASHEET 4.2.1.1 Register 00h: V e ndor ID (LSB) 03h R/W PID MSB PIDM 25h .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 15 Revision 1.97 (08-1 1-08) DA T ASHEET 4.2.1.2 Register 01h: V e ndor ID (MSB) 4.2.1.3 Register 02h: Product ID (LSB) 4.2.1.4 Register 03h: Product ID (MSB) 4.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 16 SMSC USB2512Ai DA T ASHEET 4.2.1.7 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.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 17 Revision 1.97 (08-1 1-08) DA T ASHEET 4.2.1.8 Register 07h: Configurat ion Dat a Byte 2 0 PORT_PWR Port.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 18 SMSC USB2512Ai DA T ASHEET 4.2.1.9 Register 08h: Configurat ion Dat a Byte 3 4.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 19 Revision 1.97 (08-1 1-08) DA T ASHEET 4.2.1.1 1 Register 0Ah: Port Disa ble For Self-Powered Op eration 4.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 20 SMSC USB2512Ai DA T ASHEET 4.2.1.13 Register 0Ch: Max Powe r For Self-Powered Operation 4.2.1.14 Register 0Dh: Max Power For Bus -Powered Operation 4.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 21 Revision 1.97 (08-1 1-08) DA T ASHEET 4.2.1.16 Register 0Fh: Hu b Controller Max Current For Bus-Powered Operation 4.2.1.17 Register 10h: Power-On T ime 4.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 22 SMSC USB2512Ai DA T ASHEET 4.2.1.19 Register F8h: Boost_2:0 4.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 23 Revision 1.97 (08-1 1-08) DA T ASHEET 4.2.1.21 Register FBh: Port Remap 12 BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTR12 Port remap register for ports 1 & 2.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 24 SMSC USB2512Ai DA T ASHEET 4.2.1.22 Register FFh: S tatus/Co mmand 4.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 25 Revision 1.97 (08-1 1-08) DA T ASHEET 4.2.3 In-Circuit EEPROM Programming The EEPROM can be programmed via A T E by pulling RESET_N low (which tri-states the Hub’ s EEPROM interface and allows an exter nal source to program the EEPROM).
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 26 SMSC USB2512Ai DA T ASHEET Figure 4.1 Block Write Block Read A Block Read differs from a block write in that th e repeated start conditio n exists to satisfy the I 2 C specification’s requirement for a ch ange in the t ransfer direction .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 27 Revision 1.97 (08-1 1-08) DA T ASHEET 4.3.5 Stretching the SCLK Signal The Hub supports stretching o f the SCLK by othe r device s on the SMBus. The Hub does not stretch the SCLK.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 28 SMSC USB2512Ai DA T ASHEET 4.6.2 External Hardware RESET_N A valid hardware reset is defined as assertion of RESET_N for a minimum of 1us after all power supplies are within ope rating range.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 29 Revision 1.97 (08-1 1-08) DA T ASHEET Notes: When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than 100mA from the upstream USB power source during t1+t5.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 30 SMSC USB2512Ai DA T ASHEET 4.6.2.3 RESET_N for SMBus Slave Configuration Figure 4.5 Reset_N Timing for SMBus Mode Notes: For Bus-Powered configu rations, the 99.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 31 Revision 1.97 (08-1 1-08) DA T ASHEET 4. Clears all TT buffers. 5. Moves device from suspended to active (if suspende d). 6. Complies with Section 1 1.10 of the USB 2.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 32 SMSC USB2512Ai DA T ASHEET Chapter 5 DC Parameters 5.1 Maximum Guaranteed Ratings Note 5.1 S tresses above the specified parameters co uld cause permanent damage to the device.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 33 Revision 1.97 (08-1 1-08) DA T ASHEET 5.2 Operating Conditions PARAMETER SYMBOL MIN MAX UNITS COMMENT S Operating T e mperature T A -40 85 °C Ambient temperature in still air .
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 34 SMSC USB2512Ai DA T ASHEET Notes: 1. Output leakage i s measured with the current pins in high impedance. 2. See USB 2.0 S pecification for U SB DC electrical characteristics.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet SMSC USB2512Ai 35 Revision 1.97 (08-1 1-08) DA T ASHEET CAP ACIT ANCE T A = 25°C; fc = 1MHz; V DD18 , V DDPLL = 1.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 36 SMSC USB2512Ai DA T ASHEET Chapter 6 AC S pecifications 6.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24 MHz ± 350ppm. External Clock: 50% Duty cycl e ± 1 0 % , 2 4 M H z ± 350ppm, Jitter < 100 ps rms.
Industrial T emperature Rated USB 2.0 Hi-Speed 2-Port Hub Controller Datasheet Revision 1.97 (08-1 1-08) 37 SMSC USB2512Ai DA T ASHEET Chapter 7 Package Outline Figure 7.
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 USB2512Ai 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 USB2512Ai - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation SMSC USB2512Ai, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le SMSC USB2512Ai va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le SMSC USB2512Ai, 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 USB2512Ai.
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 USB2512Ai. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei SMSC USB2512Ai 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.
