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SMSC USB2502 manual

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  • Page 1

    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 (1.5Mbits/s) compatible — Full power management with ganged power co ntrol — Detects Bus-Power/Self-Power source and [...]

  • Page 2

    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 2.0 Hub Controller Datasheet Revision 2.3 (08-27-07) 2 SMSC USB2502 DA T ASHEET 80 ARKA Y DRIVE, HAUPP AUG E, NY 1 1788 (6 31) 435-6000, F A X (631) 273-3123 Copyright © 20 07 SMSC or its sub sidiar[...]

  • Page 3

    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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 4

    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 2-Port Pin Table for 48-TQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 5

    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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 3.2 2-Port 48-Pin TQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 6

    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. The 2-Port Hub supp orts Low-S peed, Full-S peed, and High-S peed (if oper[...]

  • Page 7

    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 2.0 INTERF ACE (3 PINS) USBDP0 USBDN0 VBUS_DET 2-PORT USB 2.0 INTERF ACE (10 PINS) USBDP1 USBDN1 USBDP2 USBDN2 GR1/ NON_REM0 GR2/ NON_REM1 PRTPWR_POL RBIAS PRTP WR OCS_N SERIAL P[...]

  • Page 8

    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 2.0 INTERF ACE (10 PINS) USBDP1 USBDN1 USBDP2 USBDN2 GR1/ NON_REM0 GR2/ NON_REM1 PRTPWR_POL RBIAS PRTP WR OCS_N SERIAL PORT INTERF ACE (3 PINS) SD[...]

  • Page 9

    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. VDDA33 1 USBDP0 2 USBDN0 3 VSS 4 USBDN1 5 USBDP1 6 VDDA33 7 USBDP2 8 USBDN2 [...]

  • Page 10

    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 $/&/.,1 9''$3// 9''$3// 9'' 966 *5121B5(0 *5121B5(0 6(/)B3:5 3573:5B32/ 3573:5 9''$ $ 7(67[...]

  • Page 11

    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. Dete[...]

  • Page 12

    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. USB Power Enable PRTPWR O8 Enables power to USB peripheral device s (downstream). The ac[...]

  • Page 13

    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. This multifunct ion pin is read on the rising edge[...]

  • Page 14

    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 1.8v regulato r . This pin must b e connected to VDDA33 to enable t he intern[...]

  • Page 15

    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. Note: Meets USB 1.1 requirements when ope[...]

  • Page 16

    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 2.0 April 27,2000 (12/ 7/2000 and 5/28/2002 Errata). Please re ference Chapter 1 1 (Hub S [...]

  • Page 17

    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. 5.1.1.6 EOP Disable During FS operation [...]

  • Page 18

    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. If the Hub detects a change in power source availability , the Hub immediately disconnects and removes power from all[...]

  • Page 19

    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). The Internal state-machine will, (when con figured [...]

  • Page 20

    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. Non Removable Device 8 1 0[...]

  • Page 21

    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. 7:0 DID_LSB Least Significant Byte of the Dev[...]

  • Page 22

    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 . 00 = 0.[...]

  • Page 23

    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 5.2.3.10 EEPROM Offs et C(h) - Max Power For Bus Powered Operation 5.2.3.1 1 EEPROM Offset D(h) - Hub Controller Max Current For Self Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7:0 MAX[...]

  • Page 24

    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 5.2.3.13 EEPROM Of fset F(h) - Power-On T ime 5.3 SMBus Slave Interface Instead of loading User-Defi ned Descriptor data from an external EEPROM, th e SMSC Hub can be configu[...]

  • Page 25

    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. The normal read protocol consists of[...]

  • Page 26

    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 ). Devices that have detected thi s cond[...]

  • Page 27

    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 Register 01h: V endor ID (LSB) (Reset = 0x00) 0Ch R/W Max Power (Self) MAXPS 7 6 5 4 3 2 1 0 0Dh R/W Max Power (Bus) MAXPB 7 6 5 4 3 2 1 0 0Eh R/W Hub Controller Max Current (Self) HCMCS 7 6 5 4 3[...]

  • Page 28

    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) 5.3.9.6 Register 05h: Device ID (LSB) (Reset = 0x00) 5.3.9.7 Register 06h: Device ID (MSB) (Res[...]

  • Page 29

    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.e. (no High -S peed support). 0 = High-/Fu[...]

  • Page 30

    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) 5.3.9.13 Register 0Ch: Max Power For Se [...]

  • Page 31

    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) 5.3.9.16 Register 0Fh: Hu b Controller Max Curren t For Bus Powered Operation (Res et = [...]

  • Page 32

    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. (please see for speci fic[...]

  • Page 33

    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. Whil e reset is asserted, the Hub (a nd its associated external circuitry) consumes less tha[...]

  • Page 34

    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.  All Power Supplies mu st have reached th e operating level s mandated in Secti on Chapter 7, &qu[...]

  • Page 35

    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. 5.6.1.3 RESET_N for SMBus Slave Configuration Figure 5.4 Reset_N Timing for [...]

  • Page 36

    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. 1. Sets default address to 0. 2. Sets configuration to: Unconfig[...]

  • Page 37

    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). This functionali ty is enabled by driving T EST and CFG_SEL[1] high, driving SCLK low and[...]

  • Page 38

    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. This is a stress rating only and functional operation of the device at any condition above those indicated in t[...]

  • Page 39

    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 1.98 V 3.3V supply voltage V DDA 33 V DDA33PLL V DD33CR 3.0 3.6 V V oltage on any I/O pin -0.3 5.5 V[...]

  • Page 40

    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 2.0 -10 50 0.8 +10 100 V V uA mV TTL Levels V IN = 0 to V DD33 CR O8 and I/O8 Type Buffer Low Output Level High Output Leve l Output Leakage V OL V OH I O[...]

  • Page 41

    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 3.3V tolerant analog pin. CAP ACIT ANCE T A = 25°C; fc = 1MHz; V DD33CR = 3.3 V Power Sequenci[...]

  • Page 42

    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. 8.1.1 S MBus Interface: The SMSC Hub conforms to all vo[...]

  • Page 43

    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.X X.XX X.XXX MATERIAL FI NIS H STD CO MPLI AN C E THIR D ANGL E PRO JECTI O N PR I N T W I T H " S C A LE TO FIT" DO N OT[...]

  • Page 44

    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 ± 0.04 mm maximum. 3. Package body dimensions D1 an d E1 do not include t he mold protru[...]