Manuale d’uso / di manutenzione del prodotto USB20H04 del fabbricante SMSC
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SMSC USB20H04 Page 1 Revision 1.63 (03-30-07) DATASHEET USB20H04 4-Port USB 2.0 Hub Contr oller Datasheet Product Features General Features Compliant with USB 2.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 2 SMSC USB20H04 DATASHEET 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2007 SMSC or its subs idiaries.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 3 Revision 1.63 (03-30-07) DATASHEET T able of Content s Chapter 1 General D escription ............................................................................................................
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 4 SMSC USB20H04 DATASHEET List of Figures Figure 2.1 - Bl ock Di agram..................................................................................................... .........
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 5 Revision 1.63 (03-30-07) DATASHEET Chapter 1 General Description The USB20H04 four-port hub controller is fully comp liant with the USB 2.0 Specification and does not require firmware development.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 6 SMSC USB20H04 DATASHEET 1.2 OEM Selectable Features The 4-Port Hub supports seve ral OEM selectable features: Operation as a bus-pow ered, self-pow ered or dynamic-powered hub.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 7 Revision 1.63 (03-30-07) DATASHEET Chapter 2 Functional Block Diagram To Upstream V BUS Upstream PHY Upstream USB Data Repeater Controller SIE .
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 8 SMSC USB20H04 DATASHEET Chapter 3 Pinout AM3_N GR2_N AM1_N 48 47 46 45 44 43 42 41 TEST_P3 VSS OCS3_N VBUS 3_N OCS4_N VBUS 4_N C.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 9 Revision 1.63 (03-30-07) DATASHEET Chapter 4 Interface Signal Definition 4.1 Pin Descriptions Table 4.1 - System Interface Signals NAME BUFFER TYPE A CTIVE LEVEL DESCRIPTION RESET_N IS Low Chip Reset .
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 10 SMSC USB20H04 DATASHEET Table 4.3 - USB I/O Signals NAME BUFFER TYPE A CTIVE LEVEL DESCRIPTION USBDP0 IO-U N/A Upstream USB Positive Data Pin. USBDM0 IO-U N/A Upstream USB Negative Data Pin.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 11 Revision 1.63 (03-30-07) DATASHEET Table 4.4 - Biasing and Cl ock Oscillator Signals NAME BUFFER TYPE A CTIVE LEVEL DESCRIPTION RBIAS I-R N/A External 1% bias resistor. Requires a 12K Ω resistor to ground.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 12 SMSC USB20H04 DATASHEET Chapter 5 Limiting V alues Table 5.1 - Absolute Maximum Ratings (In accordance with the Absolute Maximum Rating sy stem (IEC 60134) PA RAMETER SYMBOL CONDITIONS MIN TYP MA X UNITS 1.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 13 Revision 1.63 (03-30-07) DATASHEET Chapter 6 Electrical Characteristics Table 6.1 - Electric al Characteris tics: Supply Pins (V DD1.8 =1.74 to 2.0V; V DD3.3 =3.0 to 3.6V; V SS = 0V; T A = 0 o C to +70 o C; unless otherw ise specified.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 14 SMSC USB20H04 DATASHEET PA RAMETER SYMBOL COMMENTS MIN TYP MA X UNITS I, IPD, IPU Input Buffer Low Input Level High Input Level Low Input Leakage High Input Leakage V ILI V IHI I IL I IH TTL Levels TTL Levels V IN = 0 V IN = V DD3.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 15 Revision 1.63 (03-30-07) DATASHEET Table 6.4 - DC Electrical Characteristics: Analog I/O Pins (DP/DM) (VDD1.8 =1.74 to 2.0V; VDD3.3 =3.0 to 3.6V; VSS = 0V; TA = 0 o C to +70 o C; unless otherw ise specified.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 16 SMSC USB20H04 DATASHEET Chapter 7 Functional Overview Figure 2.1 show s the functional block diagram of the USB 2.0 Hub Controlle r. Each of the functions is described in detail below.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 17 Revision 1.63 (03-30-07) DATASHEET 7.5 Serial Interface External configuration dat a is loaded via the serial interface. T he serial interface appears as either an SMBus slave, or an I 2 C memory interface.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 18 SMSC USB20H04 DATASHEET 7.9 Transaction Translator (TT) The transaction translator supports full-speed and low-s peed devices attached to dow nstream ports in the high-speed environment.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 19 Revision 1.63 (03-30-07) DATASHEET Each port’s indicator must be located in a position that obviously associates the indicator with the port. The color and state of the LED is used to pr ovide status information to the user.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 20 SMSC USB20H04 DATASHEET Chapter 8 Implementation Notes The following sections consist of se lect functional explanations to aid in implementing the Hub Controller into a system. 8.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 21 Revision 1.63 (03-30-07) DATASHEET 8.1.2 Internal Default Configuration The internal default configuration is enabled w hen SMB_SEL_N is high and CS/EE_SEL is low on the rising edge of RESET_N.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 22 SMSC USB20H04 DATASHEET Detailed definition of the bits used to program the OEM values are giv en in Table 8.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 23 Revision 1.63 (03-30-07) DATASHEET BIT FIELD NA ME DESCRIPTION 3:0 Port Non-Active Selects which ports ar e active. A one indicates that the port is non-active: Bit 3: Port 4 is non-active. Bit 2: Port 3 is non-active.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 24 SMSC USB20H04 DATASHEET Table 8.6 - Default Configuration Va lues REGISTER ADDRESS REGISTER NA ME SELF-POWERED DEFA ULT (HEX) B.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 25 Revision 1.63 (03-30-07) DATASHEET 8.4.1.1 SMBus Configuration Timing Figure 8.3 - Timing for Configuration from SMBus Table 8.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 26 SMSC USB20H04 DATASHEET 8.4.1.2 EEPROM Configuration Timing Figure 8.4 - Timing to Complete Configuration from EEPROM Table 8.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 27 Revision 1.63 (03-30-07) DATASHEET 8.4.2 USB Reset When the upstream host signals a reset, the USB20H04 does the following: Note: T he USB20H04 does not propagate the upstr eam USB Reset to downstream devices! 1.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 28 SMSC USB20H04 DATASHEET Chapter 9 Hub Descriptors The USB20H04 will not electrically attach to the USB until after it has loaded valid data for all user-defined descriptor fields.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 29 Revision 1.63 (03-30-07) DATASHEET Table 9.3 - Standard Config u ration Descriptor OFFSET FULL SPEED HIGH SPEED FIELD NAME DESCRIPTION 0 09h 0.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 30 SMSC USB20H04 DATASHEET OFFSET FULL SPEED HIGH SPEED FIELD NAME DESCRIPTION 4 01h 01h** bNumInterfaces Number of interfaces supported by this configuration 5 01h 01h bConfigurationValue Value to use to select configuration.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 31 Revision 1.63 (03-30-07) DATASHEET Table 9.7 - Interface Descriptor (present if multip le-TT) OFFSET HIGH SPEED FIELD NA ME DESCRIPTION 0 09h .
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 32 SMSC USB20H04 DATASHEET OFFSET FIELD NA ME VA LUE DESCRIPTION 6 HubContrCurrent user Maximum current requirements of the hub controller electronics in mA. Derived from OEM value.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 33 Revision 1.63 (03-30-07) DATASHEET Chapter 10 Application Diagrams The highly-integrated USB20H04 Hub Controller is co mplemented with a minimal number of external components to create a complete four-port Hi-S peed USB hub application.
4-Port USB 2.0 Hub Controller Datasheet Revision 1.63 (03-30-07) Page 34 SMSC USB20H04 DATASHEET USB20 H04 (Port 1) Downstream V BUS Power Source VDD3.3 Power Switch OC Sense IN EN OC OUT VBUS1_N OCS1_N GR1_N AM1_N USBDP1 USBDM1 V BUS D+ D- Green Indicator Amber Indicator USB T ype A Connector Figure 10.
4-Port USB 2.0 Controller Datasheet SMSC USB20H04 Page 35 Revision 1.63 (03-30-07) DATASHEET Chapter 11 Package Outline Figure 11.1 - 64 Pin TQFP Package Outlin e, 10 x 10 x 1.4 Body, 2 MM Footprint Table 11.1 - 64 Pin TQF P Packag e Parameters MIN NOMINA L MAX REMA RKS A ~ ~ 1.
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 SMSC USB20H04 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 SMSC USB20H04 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso SMSC USB20H04 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul SMSC USB20H04 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il SMSC USB20H04, 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 SMSC USB20H04.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il SMSC USB20H04. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo SMSC USB20H04 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.