Manuale d’uso / di manutenzione del prodotto USB2503A del fabbricante SMSC
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SMSC USB2503/USB2503A DA T ASHEET Revision 2.3 (08-27-07) Datasheet PRODUCT FEA TURES USB2503/ USB2503A Integrated USB 2.0 Comp atible 3-Port Hub Integrated USB 2.0 Compatible 3-Port Hub — 3 T ransaction T ranslators for highest perfo rmance — High-S peed (480Mbits/s), Full-S pe ed (12Mbits/s) and Low-S peed (1.
ORDER NUMBERS: USB2503/USB 2503A-HZH FOR 48 PIN QFN LEAD-FREE ROHS COMPLIANT PACKAGE Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 2 SMSC USB2503/USB2503A DA T ASHEET 80 ARKA Y DRIVE, HAUPP AUGE, NY 1 1788 (631) 435-6 000, FAX ( 631) 273-3123 Copyright © 20 07 SMSC or its subsidiari es.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 3 Revision 2.3 (08-27-07) DA T ASHEET T able of Content s Chapter 1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 4 SMSC USB2503/USB2503A DA T ASHEET List of Figures Figure 3.1 3-Port 48-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 5 Revision 2.3 (08-27-07) DA T ASHEET List of T ables Table 4. 1 3-Port Hub Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 6 SMSC USB2503/USB2503A DA T ASHEET Chapter 1 General Description The SMSC 3-Port Hub is fully complian t with th e USB 2.0 S pecification and will attach to a USB host as a Full-S peed Hub or as a Full-/High-Speed Hub.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 7 Revision 2.3 (08-27-07) DA T ASHEET Chapter 2 Pin T able 3-Port T able 2.1 3-Port Pin T able UPSTREAM USB 2.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 8 SMSC USB2503/USB2503A DA T ASHEET Chapter 3 Pin Configuration 3-Port Hub Figure 3.1 3-Port 48-Pin QFN Thermal Slug (must be connected to VSS) SMSC USB2503 & USB2503A (Top View QFN-48) Indicates pins on the bottom of the device.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 9 Revision 2.3 (08-27-07) DA T ASHEET Chapter 4 3-Port Hub Block Diagram Figure 4.1 3-Port Bloc k Diagram T able 4.1 3-Port Hub Pin Descript ions NAME SYMBOL T YPE FUNCTION UPSTREAM USB 2.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 10 SMSC USB2503/USB2503A DA T ASHEET 3-PORT USB 2.0 HUB INTERF ACE High-S peed USB Data USBDN[3:1] USBDP[3:1] IO-U These pins connect to the downst ream USB peripheral devices attached to the Hub’s ports.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 1 1 Revision 2.3 (08-27-07) DA T ASHEET Port Power Polarity strapping. PRTPWR_POL I/O12 Port Power Polarity strapping determinat ion for the active signal polarity of the PRTPWR[3 :1] pins.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 12 SMSC USB2503/USB2503A DA T ASHEET Crystal Output XT AL2 OCLKx 24MHz Crystal This is the other t erminal of the crystal, or left unconnected when an ex ternal clock source is used to drive XT AL1/ CLKIN.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 13 Revision 2.3 (08-27-07) DA T ASHEET VDD3P3 CORE PLL VDD33CR +3.3V I/O and C ore power . VSS VSS Ground. T able 4.5 Buffer T ype Descriptions BUFFER DESCRIPTION I Input. IPD Input, with a weak Internal pull-do wn.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 14 SMSC USB2503/USB2503A DA T ASHEET Chapter 5 Functional Block Description 5.1 3-Port Hub SMSC’s USB 2.0 3-Port Hub is fully specification co mpliant to the Universal Serial Bus S pecificati on Revision 2.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 15 Revision 2.3 (08-27-07) DA T ASHEET 5.1.1.5 Port Indicators Controls the use of LED indicator for Port st atus information. See Section 1 1.5.3 of the USB 2.0 S pecification f or additional details.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 16 SMSC USB2503/USB2503A DA T ASHEET This field is set by the OEM using either the SMBus or EEPROM interface options. When using the internal default option, the NON_ REM[1:0] pins will designate t he appropriate ports as being non- removable.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 17 Revision 2.3 (08-27-07) DA T ASHEET 5.1.1.20 Bus-Powered Hub Controller Current When in Bus-Powered configuration, Maximum curr ent requirements of the Hub Controller in 2mA increments.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 18 SMSC USB2503/USB2503A DA T ASHEET 5.2.1.3 I2C EEPRO M Slave Address Slave address is 1010000.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 19 Revision 2.3 (08-27-07) DA T ASHEET 5.2.3.1 EEPROM Offset 1:0(h) - V endor ID 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 20 SMSC USB2503/USB2503A DA T ASHEET 5.2.3.5 EEPROM Offset 7(h) - CONFIG_BYTE_2 3 EOP_DISABLE EOP Disable: Disabl es EOP generation at EOF1 when no downstream directed traffic is in progress.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 21 Revision 2.3 (08-27-07) DA T ASHEET 5.2.3.6 EEPROM Offset 8(h) - Non-Removable Device 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 22 SMSC USB2503/USB2503A DA T ASHEET 5.2.3.9 EEPROM Offs et B(h) - Max Power For Self Powered Operation 5.2.3.10 EEPROM Offs et C(h) - Max Power For Bus Powered Operation 5.2.3.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 23 Revision 2.3 (08-27-07) DA T ASHEET 5.2.3.12 EEPROM Offs et E(h) - Hub Controller Max Current For Bus Powered Operation 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 24 SMSC USB2503/USB2503A DA T ASHEET 5.3.1.1 Byte Protocols When using the Hub SMBus Interface for byte transfers, a write will always consist of the SM Bus Interface Slave Address byt e, followed by the I nternal Address Regi ster byte, then the d ata byte.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 25 Revision 2.3 (08-27-07) DA T ASHEET 5.3.4 Slave Device Time-Out According to the SMBus S pecificatio n, V1.0 devices in a transfer can abort the transfer i n progress and release the bus when any single clock low interval exceeds 25ms (T TIMEOUT , MIN ).
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 26 SMSC USB2503/USB2503A DA T ASHEET 5.3.9.1 Register 00h: S tatus/Command ( Reset = 0x00) 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 27 Revision 2.3 (08-27-07) DA T ASHEET 5.3.9.3 Register 02h: V endor ID (MSB) (Reset = 0x00 ) 5.3.9.4 Register 03h: Product ID (LSB) (Reset = 0x00) 5.3.9.5 Register 04h: Product ID (MSB) (Reset = 0x00) 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 28 SMSC USB2503/USB2503A DA T ASHEET 5.3.9.9 Register 08h: Co nfiguration Dat a Byte 2 (Reset = 0x00) 5 HS_DISABLE High S peed Disa ble: Disables the capability to attach as either a High/Full- speed device, and forces attachment as Full-speed only i.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 29 Revision 2.3 (08-27-07) DA T ASHEET 5.3.9.10 Register 09h: Non- Remo vable Device (Reset = 0x00) 5.3.9.1 1 Register 0Ah: Po rt Disable For Self Powered Operation (Rese t = 0x00) 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 30 SMSC USB2503/USB2503A DA T ASHEET 5.3.9.14 Register 0Dh: Max Power For Bus Powered Operation (Re set = 0x00) 5.3.9.15 Register 0Eh: Hub Controller Max Curr ent For Self Powered Operation (Reset = 0x 00) 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 31 Revision 2.3 (08-27-07) DA T ASHEET 5.3.9.17 Register 10h: Power-On Time (Res et = 0x00) 5.3.9.18 Undefi ned Registe rs The registers shown in Ta b l e 5 . 4 are the defined registers i n the Hub.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 32 SMSC USB2503/USB2503A DA T ASHEET Figure 5.1 LED Strappi ng Option 5.6 Reset There are two different resets th at the Hub experiences. One is a hardware reset (via the RESET_N pin) and the second is a USB Bus Reset.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 33 Revision 2.3 (08-27-07) DA T ASHEET 5.6.1.1 RESET_N for St rappin g Option Configuration Figure 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 34 SMSC USB2503/USB2503A DA T ASHEET 5.6.1.2 RESET_N for EEPROM Configuration Figure 5.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 35 Revision 2.3 (08-27-07) DA T ASHEET 5.6.1.3 RESET_N for SMBus Slave Configuration Figure 5.4 Reset_N Timing for SMBus Mode Notes: For Bus-Powered conf igurations, t he 99.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 36 SMSC USB2503/USB2503A DA T ASHEET 5. Moves device from suspended to active (if suspended). 6. Complies with Section 1 1.10 of the USB 2.0 S pecificati on for behavior after completion of the reset sequence.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 37 Revision 2.3 (08-27-07) DA T ASHEET Chapter 6 XNOR T est XNOR continuity tests all signal pin s on the Hub (every pin except for NC, XT AL1/CLKIN, XT AL2, A TEST/REG_EN, RBIAS, TEST1, Power , and Gro und).
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 38 SMSC USB2503/USB2503A DA T ASHEET Chapter 7 DC Parameters 7.1 Maximum Guaranteed Ratings Note: S tresses above th e specified parameters could cause permanen t damage to the devi ce.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 39 Revision 2.3 (08-27-07) DA T ASHEET 7.2 Recommended Operating Conditions PARAMETER SYMBOL MIN MAX UNITS COMMENTS Operating T e mperature T A 07 0 ° C 1.8V supply voltage V DDA18PLL V DD18 1.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 40 SMSC USB2503/USB2503A DA T ASHEET ICLK Input Buffe r Low Input Level High Input Leve l Input Leakage Hysteresis V ILCK V IHCK I IL V HYSC 2.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet SMSC USB2503/USB2503A 41 Revision 2.3 (08-27-07) DA T ASHEET Notes: 1. Output leakage i s measured with t he current pins in h igh impedance. 2. See USB 2.0 Specification for USB DC electrical characteristics.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 42 SMSC USB2503/USB2503A DA T ASHEET Chapter 8 AC S pecifications 8.1 Oscillator/Clock Crystal: Parallel Resonant, Funda mental Mode, 24 MHz ± 100p pm. External Clock: 50% Duty cycle ± 1 0 % , 2 4 M H z ± 100ppm, Jitter < 100 ps r m s.
Integrated USB 2.0 Compatible 3-Port Hub Datasheet Revision 2.3 (08-27-07) 43 SMSC USB2503/USB2503A DA T ASHEET Chapter 9 Package Outline Figure 9.1 48 Pin QFN Packag e Outline (7x7 mm body - 0.5 m m pitch) Notes: 1. Controlling Unit: millimeter . 2. Dimension b applie s to plated termina ls and is measured between 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 SMSC USB2503A 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 USB2503A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso SMSC USB2503A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul SMSC USB2503A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il SMSC USB2503A, 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 USB2503A.
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 USB2503A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo SMSC USB2503A 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.