Instruction/ maintenance manual of the product USB2502 SMSC
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SMSC USB2502 DA T ASHEET Revision 2.3 (08-27-07) Datasheet PRODUCT FEA TURES USB2502 2-Port USB 2.0 Hub Controller Integrated USB 2.0 Compatible 2-Port Hub — High-S peed (480Mbits/s), Full-S peed (12Mbits/s) and Low-S peed (1.
ORDER NUMBERS: USB2502-AEZG FOR 36 PIN LEAD-FREE ROHS COMP LIANT QFN PACKAGE; USB 2502-HT FOR 48 PIN LEAD- FREE ROHS COMPLIANT TQFP PACKAGE 2-Port USB 2.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 3 Revision 2.3 (08-27-07) DA T ASHEET T able of Content s Chapter 1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1 OEM Selectable Features .
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 4 SMSC USB2502 DA T ASHEET List of T ables Table 2. 1 2-Port Pin Table for 36-QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 2.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 5 Revision 2.3 (08-27-07) DA T ASHEET List of Figures Figure 3.1 2-Port 36-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 6 SMSC USB2502 DA T ASHEET Chapter 1 General Description The SMSC 2-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-S peed Hub.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 7 Revision 2.3 (08-27-07) DA T ASHEET Chapter 2 Pin T able 2-Port T able 2.1 2-Port Pin T able for 36-QFN UPSTREAM USB 2.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 8 SMSC USB2502 DA T ASHEET T abl e 2.2 2-Port Pin T able for 48-TQFP UPSTREAM USB 2.0 INTERF ACE (3 PINS) USBDP0 USBDN0 VBUS_DET 2-PORT USB 2.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 9 Revision 2.3 (08-27-07) DA T ASHEET Chapter 3 Pin Configuration 2-Port Hub Figure 3.1 2-Port 36-Pin QFN Thermal Slug (must be connected to VSS) SMSC USB2502 (Top View QFN-36) Indicates pins on the bottom of the device.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 10 SMSC USB2502 DA T ASHEET Figure 3.2 2-Port 48-Pin TQ FP 9''&5 966 ;7 $/ ;7 $/&/.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 1 1 Revision 2.3 (08-27-07) DA T ASHEET Chapter 4 2-Port Hub Block Diagram Figure 4.1 2-Port Bloc k Diagram T able 4.1 2-Port Hub Pin Descript ions NAME SYMBOL T YPE FUNCTION UPSTREAM USB 2.0 INTE RF ACE USB Bus Data USBDN0 USBDP0 IO-U These pins connect to the upstream USB bus data signals.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 12 SMSC USB2502 DA T ASHEET 2-PORT USB 2.0 HUB INTERF ACE High-S peed USB Data USBDN[2:1] USBDP[2:1] IO-U These pins connect to the downst ream USB peripheral devices attached to the Hub’s ports.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 13 Revision 2.3 (08-27-07) DA T ASHEET SERIAL PORT INTERF ACE Serial Data/SMB Data SDA/SMBDA T A IOSD12 (Serial Data)/(SMB Dat a) signal. Serial Clock/SMB Clock & Config Select 0 SCL/SMBCLK/ CFG_SEL0 IOSD12 (Serial Clock)/(SMB Clock) sig nal.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 14 SMSC USB2502 DA T ASHEET Analog T est & Internal 1.8V voltage regulator enable A TEST/ REG_EN AIO This signal is used for testing the analog section of the chip, and to ena ble or disable t he internal 1.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 15 Revision 2.3 (08-27-07) DA T ASHEET IOSD12 Open drain….12mA sink with Sch mitt t rigge r , an d must meet I 2C-Bus Specification V ersion 2.1 requirements. ICLKx XT AL Clock Input OCLKx XT AL Clock Output I-R RBIAS IO-U Defined in USB S pecification.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 16 SMSC USB2502 DA T ASHEET Chapter 5 Functional Block Description 5.1 2-Port Hub SMSC’s USB 2.0 2-Port Hub is fully specification co mpliant to the Universal Serial Bus S pecification Revision 2.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 17 Revision 2.3 (08-27-07) DA T ASHEET 5.1.1.5 High-Speed Disab le Allows an OEM to force the Hub to configure as a Full-S peed device only (i.e. High-S peed not available). This field is set by the OEM using either the SMBus o r EEPROM interface opt ions.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 18 SMSC USB2502 DA T ASHEET When Dynamic Power switching is enab led, the Hub detects the availability of a local power so urce by monitoring the external SELF_PWR pin.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 19 Revision 2.3 (08-27-07) DA T ASHEET 5.2 EEPROM Interface The SMSC Hub can be co nfigured via a 2-wire (I2C) EEPROM. (Please see T able 4.1, "7-Port Hu b Pin Descriptions" for specific details on how to enable the I2C EEPROM option).
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 20 SMSC USB2502 DA T ASHEET 5.2.3.1 EEPROM Offset 1:0(h) - V endor ID 5.2.3.2 EEPROM Offset 3:2(h) - Product ID Config Data Byte 1 6 1 88 0C Configuration data byte #1 f or Hub options. Config Data Byte 2 7 1 90 90 Configuration data byte #2 f or Hub options.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 21 Revision 2.3 (08-27-07) DA T ASHEET 5.2.3.3 EEPROM Offset 5:4(h) - Device ID 5.2.3.4 EEPROM Offset 6(h) - CONFIG_BYTE_1 5.2.3.5 EEPROM Offset 7(h) - CONFIG_BYTE_2 BIT NUMBER BIT NAME DESCRIPTION 15:8 DID_MSB Most Significant Byte of the De vice ID.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 22 SMSC USB2502 DA T ASHEET 5.2.3.6 EEPROM Offset 8(h) - Non-Removable Device 5.2.3.7 EEPROM Offset 9(h) - Port Disable For Self Powered Operation 5.2.3.8 EEPROM Offs et A(h) - Port Disable For Bus Powered Operation 5:4 OC_TIMER Ove rCurrent T imer: Over Current T imer de lay .
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 23 Revision 2.3 (08-27-07) DA T ASHEET 5.2.3.9 EEPROM Offs et B(h) - Max Power For Self Powered Operation 5.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 24 SMSC USB2502 DA T ASHEET 5.2.3.12 EEPROM Offs et E(h) - Hub Controller Max Current For Bus Powered Operation 5.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 25 Revision 2.3 (08-27-07) DA T ASHEET 5.3.1.1 Byte Protocols When using the Hub SMBus Interface for byte transfers, a write will always consis t of the SMBus Interface Slave Address byt e, followed by the I nternal Address Register b yte, then the d ata byte.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 26 SMSC USB2502 DA T ASHEET 5.3.4 S lave Device T ime-Out According to the SMBus S pecification, V1.0 devices in a transfer ca n abort the transf er in progress and release the bus when any single clock low interval exceeds 25ms (T TIMEOUT , MIN ).
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 27 Revision 2.3 (08-27-07) DA T ASHEET 5.3.9.1 Register 00h: S t atus/Command (Reset = 0x00) 5.3.9.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 28 SMSC USB2502 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.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 29 Revision 2.3 (08-27-07) 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 force s attachment as Full-speed only i.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 30 SMSC USB2502 DA T ASHEET 5.3.9.10 Register 09h: Non- Removable Device (Reset = 0x00) 5.3.9.1 1 Register 0Ah: Port Disable For Self Powered Operation (Rese t = 0x00) 5.3.9.12 Register 0Bh: Port Disa ble For Bus Powered Operation (Reset = 0x00) 5.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 31 Revision 2.3 (08-27-07) DA T ASHEET 5.3.9.14 Register 0Dh: Max Power For Bus Powered Operation (Reset = 0x00 ) 5.3.9.15 Register 0Eh: Hub Contr oller Max Curr ent For Self Powered Operation (Reset = 0x 00) 5.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 32 SMSC USB2502 DA T ASHEET 5.3.9.19 Reserved Registers Unless otherwise inst ructed, only a ‘0’ may be writ ten to all reserved reg isters or bits. 5.4 Default Configuration Option: The SMSC Hub can be config ured via its internal defa ult conf iguration.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 33 Revision 2.3 (08-27-07) DA T ASHEET 5.6.1 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.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 34 SMSC USB2502 DA T ASHEET Notes: When in Bus-Powered mode, the Hub and its associated circuitry mu st not consume more than 100mA from the upstream USB power source d uring t1+t5.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 35 Revision 2.3 (08-27-07) DA T ASHEET All Power Supplies mu st have reached th e operating level s mandated in Secti on Chapter 7, "DC Parameters" , prior to (or coincident wi th) the assertion of RESET_N.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 36 SMSC USB2502 DA T ASHEET 5.6.2 U SB Bus Reset In response to the upstream port signaling a reset to the Hub, the Hub does the fol lowing: Note: The Hub does no t propagate the upstream USB reset to dow nstream devices.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 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, TEST, Power , and Gro und).
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 38 SMSC USB2502 DA T ASHEET Chapter 7 DC Parameters 7.1 Maximum Guaranteed Ratings Note: S tresses above the specif ied parameters could cause permanent damage to the device.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 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 1.62 1.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 40 SMSC USB2502 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.
2-Port USB 2.0 Hub Controller Datasheet SMSC USB2502 41 Revision 2.3 (08-27-07) DA T ASHEET Notes: 1. Output leakage i s measured with t he current pins in hi gh impedance. 2. See USB 2.0 Specification for USB DC electrical characteristics. 3. RBIAS is a 3.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 42 SMSC USB2502 DA T ASHEET Chapter 8 AC S pecifications 8.1 Oscillator/Clock Crystal: Parallel Resonant, Funda mental Mode, 24 MHz ± 100ppm. External Clock: 50% Duty cycle ± 1 0 % , 2 4 M H z ± 100ppm, Jitter < 100 ps rm s.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 43 SMSC USB2502 DA T ASHEET Chapter 9 Package Outlines Figure 9.1 36 Pin QFN Pac kage - SEE SP E C F R O N T P A G E F O R REVISION HISTOR Y -- DECIM AL X.
2-Port USB 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 44 SMSC USB2502 DA T ASHEET Figure 9.2 48 Pin TQFP Package Ou tl ine (7x7x1.4 mm body , 2mm Footprint) Notes: 1. Controlling Unit: millimeter . 2. T ole rance on the true position of the l eads is ± 0.
An important point after buying a device SMSC USB2502 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought SMSC USB2502 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data SMSC USB2502 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, SMSC USB2502 you will learn all the available features of the product, as well as information on its operation. The information that you get SMSC USB2502 will certainly help you make a decision on the purchase.
If you already are a holder of SMSC USB2502, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime SMSC USB2502.
However, one of the most important roles played by the user manual is to help in solving problems with SMSC USB2502. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device SMSC USB2502 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
