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USB251x USB 2.0 Hi-Speed Hub Controller Data Sheet - Digi-Key

1. SJ LON 258050 YVNIIASI3 L 0670 szo 8 0 q 341 HL NJ7 TWNINYSL 1 810 090 050 2 T 3215 aasodxa NX oze 486 eara i 3215 dvd A X a 565 E 565 7 Y 3215 AGO A X 59 009 585 SS3NMOIHL 5 333 020 v 01740 563 TION 080 090 ev eee ee WOLLOG dOL 3309 1 1 S00 200 0 LW 213 IHOI3H TIVH3AO 001 080 31411 34 Lg 1 d NIA X9 IVNOLLdO 9 OX S GNV1 LL Ed 050 5 3904 YO ANY 1X9 LP 4 Q3sva o 060 2 NYSLLVd avd E 820 5 89d IHL AdIQOW SHL E e a ta 5 prr 0 5 Y 27 27 77 7 097 39 09 E LE I e 4 vow pd 2222 i 23 39 VNIWNHSL 9 1 NV e a IVNOLLdO SI SNIAYY 1104 i e ao 1o3deu9 SMSC USB251x 71 DATASHEET
2. 27 Chapter 6 LED Usage 29 6 1 LED Functionality 2 A RR e 29 6 1 1 USB Mode 14 Wire oor eere ke yee ed ded Pea wee bee ARE 29 6 1 2 LED Mode Speed Indication 29 Chapter 7 Battery Charging 31 7 1 General Description 31 72 USB Battery Charging 2 31 7 2 1 Special Behavior of PRTPWR 31 7 3 Battery Charging Configuration 32 7 3 1 Battery Charging enabled via EEPROM or 32 Chapter 8 Configuration 33 81 Hubo sese beber ia neben n sd 33 8 1 1 Hub Configuration Options 4 21 33 8 1 2 SMBus or EEPROM 33 8 1 3 VBus RAT 34 82 EEPROM Interface oe ee dme IR ee DR RR pd d aa 34 8 2 1 Internal Register Set Common to EEPROM and 5
3. 56 Figure 8 4 Pin Strap Option with IPD Pin 56 Figure 8 5 LED Pin Strap 56 Figure 8 6 Reset Timing for Default Strap Option 57 Figure 8 7 Reset Timing for EEPROM 58 Figure 8 8 Reset Timing for SMBus 59 Figure 9 1 Supply Rise Time 1 62 Figure 10 1 Typical Crystal Circuit 69 Figure 10 2 Formula to Find the Value of C1 and 2 69 Figure 10 3 Ceramic Resonator Usage with 70 Figure 11 1 36 Pin QFN 6x6 mm Body 0 5 mm 71 Figure 11 2 48 Pin QFN 7x7 Body 0 5 mm 72 Figure 11 3 64 Pin QFN 9x9 mm Body 0 5 mm 73 Figure 11 4 36 Pin Package Tape 74 Figure 11 5 48 Pin Package Tape 5 75 Figure 11 6 36 Pin and 48 Pin Package Reel Specifications
4. BUFFER SYMBOL TYPE DESCRIPTION MISC XTALIN ICLKx Crystal Input 24 MHz crystal This pin connects to either one terminal of the crystal or to an external 24 MHz clock when a crystal is not used CLKIN External Clock Input This pin connects to either one terminal of the crystal or to an external 24 MHz clock when a crystal is not used XTALOUT OCLKx Crystal Output 24 MHz crystal This is the other terminal of the crystal or a no connect pin when an external clock source is used to drive XTALIN CLKIN SUSP IND Active Suspend status LED Suspend Indicator Indicates USB state of the hub negated Unconfigured or configured and USB Suspend asserted the hub is configured and is active i e not in suspend LOCAL Local Power Detects availability of local self power source Low Self local power source is NOT available i e the hub gets all power from Upstream USB VBus High Self local power source is available NON REM 0 NON Strap Option If this strap is enabled by package and configuration settings see Table 8 1 Hub Configuration Options this pin will be sampled in conjunction with NON REM 1 at RESET negation to determine if ports x 1 contain permanently attached non removable devices Also the active state of the LED will be determined as follows NON RENM 1 0 00 All ports are removable and the LED is active high NON REM 1 0 01 Por
5. Li NIHIL 1 40 3 VETE pd 22220 BY SMSC USB251x 72 DATASHEET Revision 1 1 04 26 10 USB 2 0 High Speed 2 Port Hub Controller Datasheet 6 0 Apog 6x6 NAD 9 LL e1nBi4 3univ34 MION v H3H 1I3 38 3l 3I LN3GI HE TVNIWH3IE O31VOIGNI NIHLIM 1 201 38 LSNW 118 IVNOLLdO Hf 30 19134 TWNIWYSAL 0 0 SLO N33AA138 SI ANY S IVNIWH3 L O31V Id OL S3l1ddV SNOISN3MIG SNOISN3NWIG 1 TVNIW3 L 1 2589 090 IVNIWH3 L 3215 3718 4 AX 371 4909 A X SSANMOIHL dVO GION lt gt i ev T 18 LHOISH TIVHu3AO WOLLOS dOL 2 21040010 4
6. Datasheet PARAMETER SYMBOL MIN MAX UNITS COMMENTS Voltage on any I O 0 3 5 5 V If any 3 3 V supply voltage drops pin below 3 0 V then the MAX becomes 3 3 V supply voltage 0 5 Voltage on XTALIN 0 3 VDD33 V Voltage ter VDD33 k 100 K VSS k tion 50 Time Figure 9 1 Supply Rise Time Model Table 9 1 DC Electrical Characteristics PARAMETER SYMBOL MIN TYP MAX UNITS COMMENTS IS Input Buffer Low Input Level 0 8 V TTL Levels High Input Level Vini 2 0 Input Leakage ly 10 10 Vin 0 to VDD33 Hysteresis IS Only Vuvsi 250 350 mV Input Buffer with Pull Up IPU Low Input Level Vini 0 8 V TTL Levels High Input Level Vini 2 0 Low Input Leakage 35 90 0 High Input Leakage 10 10 ViN VDD33 Input Buffer with Pull Down IPD Low Input Level ViLi 0 8 V TTL Levels High Input Level 2 0 Low Input Leakage 10 10 0 High Input Leakage 35 90 VDD33 Revision 1 1 04 26 10 62 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet Table 9 1 DC Electrical Characteristics continued PARAMETER SYMBOL MIN TYP MAX UNITS COMMENTS USB251x xi xA xAi ICLK Input Buffer Low Input Level 1 4 High Input Level ly 10 10 Input Leakage Vin 0 to VDD33 USB251xB xBi ICLK Input Buffer Low Input Level VIHCK 0 9 High Input Level liL 10 10 u
7. 68 Tape 9 13 MSG OMG 68 Table 10 1 Crystal Circuit 69 EM 77 SMSC USB251x Revision 1 1 04 26 10 5 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Datasheet List of Figures Figure 4 1 USB251x Hub Family Block Diagram 11 Figure 5 1 2 Port 36 Pin ERR RR REG 12 Figure 5 2 3 Port36 pln QEN es ssc ed Sa wm PEE PROSE BEE ee ee Sed Pewee Pes 13 Figure 5 3 4 36 QEN 28244 ken ned ahead dee te aula beeing bbe E ed 14 Figure 5 4 3 Port 48 Pin 15 Figure 5 5 4 Port48 Pin VERA ey eae NARRE EREA AREETA ANAKA 16 Figure 56 64 cea Poe ge FER RG be Rae 17 Figure 6 1 Dual Color LED Implementation 29 Figure 7 1 Battery Charging via External Power 31 Figure 8 1 Block Write Ec ERU vA oie Ee nae ey AE 53 Figure 8 2 BOCK Read o RE e Eg ar Rec e du e Rug Gp ees 54 Figure 8 3 Non Removable Pin Strap Example
8. 35 522 ee ds 52 8 2 3 In Circuit EEPROM 52 83 SMBus Slave 53 8 3 1 SMBus Slave 0 53 8 3 2 Bus Protocols De RE We M RR EE VE RA 53 8 3 3 Invalid Protocol Response 54 8 3 4 General Call Address 54 8 3 5 Slave Device 54 8 3 6 Stretching the SCLK 2 54 8 3 7 SMBUS Timing x ceres OE ga eka AS MUS PEU 54 8 3 8 Bus Reset 5 54 8 3 9 SMBus Alert Response 55 84 Default Configuration Option 55 85 Default Strapping 55 9 0 Strap ze xtA dene Are da Ped hed eS eed t deba dire ves 55 8 6 1 Non Removable Strap 55 8 6 2 Internal Pull Down 1 56 8 6 3 LED
9. 74 Revision 1 1 04 26 10 SMSC USB251x 4 DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet List of Tables Table 1 1 36 pin QFN 6x6x0 5 mm RoHS Compliant Part Numbers 7 Table 1 2 48 QFN 7x7x0 5 mm RoHS Compliant Part Numbers 7 Table 1 3 64 QFN 9x9x0 5 mm RoHS Compliant Part Numbers 7 Table 2 1 Summary of Compatibilities between USB251xB xBi and USB251x xi xA xAi Products 9 Table 5 1 Pin Listin Alphabetical Order 1 18 Table 5 2 USB251x Pin 22 Table 5 3 Buffer Type 5 27 Table 8 1 Hub Configuration Options 2 4 33 Table 8 2 Internal Default EEPROM and SMBus Register Memory 35 Table 8 3 PortMap Register for Ports 142 48 Table 8 4 PortMap Register for Ports 3 4 49 Table 8 5 PortMap Register for Ports 5 6 50 Table 8 6 PortMap Register for Port 7 51 Table 8 7 Summary of Strap Options
10. 76 Revision 1 1 04 26 10 SMSC USB251x 6 DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet sms Chapter 1 USB251x Hub Family Differences Overview Table 1 1 36 pin QFN 6x6x0 5 mm RoHS Compliant Part Numbers Part Down True Battery Lower Power LED Port Clock 0 C Number stream Speed Charging Consumption Indicators MHz to ports 70 C HEN 1 y USB2512B 2 Y Y 24 Y USB2512Bi 2 24 Y USB2513 3 24 Y USB2513i 3 24 v USB2513B 3 Y Y 24 Y USB2513Bi 3 24 1882514 4 24 Y USB2514i 4 24 Y USB2514B 4 v Y 24 4 USB2514Bi 4 Y Y 24 Y Table 1 2 48 pin QFN 7x7x0 5 mm RoHS Compliant Part Numbers Down True Battery Lower Power LED Port Clock stream Speed Charging Consumption Indicators ports USB2513 3 Y 24 48 USB2513i 3 24 48 Y USB2514 4 24 48 USB2514i 4 Y v 24 48 v Y Table 1 3 64 pin QFN 9x9x0 5 mm RoHS Compliant Part Numbers Part Down True Battery Lower Power LED Port Clock 0 0 C 40 C Number stream Speed Charging Consumption Indicators MHz to to to ports 70 C 85 C 85 USB2517i 7 Y 24 Y Note 1 1 USB2512A Ai only uses a single transaction translator whereas all other parts use a multi transactions translator SMSC USB251x 7 Revision 1 1 04 26 10 DATASHEET USB 2 0 High Speed 2 Hub Controller SMSE Chapter 2 Gene
11. 55 Table 8 8 Reset Timing for Default Strap Option Mode 58 Table 8 9 Reset Timing for EEPROM 58 Table 8 10 Reset Timing for SMBus 59 Table 9 1 DC Electrical 62 Table 9 2 Supply Current Unconfigured Hi Speed Host ICCINTHS 63 Table 9 3 Supply Current Unconfigured Full Speed Host 64 Table 9 4 Supply Current Configured Hi Speed Host 1 64 Table 9 5 Supply Current Configured Full Speed Host IFCC1 65 Table 9 6 USB251x xi xA xAi Supply Current Suspend 66 Table 9 7 USB251xB xBi Supply Current Suspend 66 Table 9 8 USB251x xi xA xAi Supply Current Reset 66 Table 9 9 USB251xB xBi Supply Current Reset 67 Table 9 10 Pin Capacitance for USB251x USB251xi USB251xA 251 67 Table 9 11 Pin Capacitance for USB251xB and USB251xBi 67 Table 9 12 Package Thermal Resistance Parameters
12. PIDs DIDs and other register defaults may differ and can be configured to match the OEM s needs Please see Table 8 2 Internal Default EEPROM and SMBus Register Memory Map for details Table 2 1 Summary of Compatibilities between USB251xB xBi and USB251x xi xA xAi Products SMSC USB251x Part Drop in Number USB2512 USB2512B USB2512i USB2512Bi USB2512A USB2512B USB2512Ai USB2512Bi 36QFN USB2513 USB2513B USB2513i USB2513Bi USB2514 USB2514B USB2514i USB2514Bi 9 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller smsc Chapter 3 Acronyms Datasheet Inter Integrated Circuit OCS Over Current Sense PCB Printed Circuit Board PHY Physical Layer PLL Phase Locked Loop QFN Quad Flat No Leads RoHS Restriction of Hazardous Substances Directive SCL Serial Clock SIE Serial Interface Engine SMBus System Management Bus TT Transaction Translator 1 12 registered trademark of Philips Corporation Revision 1 1 04 26 10 10 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet Chapter 4 Block Diagram To Upstream Upstream Vsus USB Data smsc To EEPROM or SMBus Master SDA SCL 24 MHz Crystal Bus Power Upstream Regulator Serial Interface Detect PHY Vyus Pulse Repeater p 3 3 V Regulator
13. gt 2 a 26228 7 7 7 7 gt 35 29 3 9 Figure 5 5 4 Port 48 Pin QFN 16 SMSC USB251x DATASHEET Revision 1 1 04 26 10 USB 2 0 Hi Speed Hub Controller e Datasheet 5 zi z 5 gt x 1 5 z On b E 9 o lt 2 E tX 9 o lt lt X J 9 4 5 ab E 55 22 2154 Z gt gt gt 8S FE 2 2 8 O O Z 2 2 5 24444 o gt 1 38 8 spose roni odao dA ff LED N 2 PRTSWP 2 LED B N 4 LED B N 1 BOOST 0 LED A N 5 PRTSWP 5 LED A N 1 PRTSWP 1 PRTPWRI5 VDD33 PRTPWR 1 USBDM DN 6 PRT DIS M 6 OCS N 1 DN 6 DIS P 6 OCS USBDM DNI7 DIS MI7 SMSC 2 USBDP DN 7 DIS 7 USB2517 17i CRFILT VDD33 z VDD33 Top View QFN 64 USBDM_UP PRTPWR 3 USBDP UP OCS XTALOUT OCS NI4 XTALIN CLKIN PRTPWR A4 PLLFILT TEST Ground Pad RBIAS must be connected to VSS LED B NIS VDD33 LED A N 6 PRTSWP 6 QN s s O 0 Oo Y 8 0058 90 z a z 2 a z
14. 08012 Serial Clock SCL System Management Bus Clock SMBCLK Configuration Select The logic state of this multifunction pin is internally latched on the rising edge of RESET RESET negation and will determine the hub configuration method as described in Table 8 1 Hub Configuration Options HS IND SEL 1 1 012 Hi Speed Upstream Port Indicator HS IND Hi speed Indicator for upstream port connection speed The active state of the LED will be determined as follows CFG SEL 1 HS IND is high CFG SEL 1 HS IND is active low Asserted the hub is connected at HS Negated the hub is connected at FS Configuration Programming Select CFG SEL 1 The logic state of this pin is internally latched on the rising edge of RESET N RESET negation and will determine the hub configuration method as described in Table 8 1 Hub Configuration Options SEL 2 Configuration Programming Select The logic state of this pin is internally latched on the rising edge of RESET N RESET N negation and will determine the hub configuration method as described in Table 8 1 Hub Configuration Options When SEL 2 pin is unavailable then the logic is internally tied to 0 SMSC USB251x 25 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Table 5 2 USB251x Pin Descriptions continued Datasheet
15. 8 2 1 5 Register 04h Device ID LSB BIT NUMBER BIT NAME DESCRIPTION 7 0 DID LSB Least Significant Byte of the Device ID This is a 16 bit device release number in BCD format assigned by OEM This field is set by the OEM using either the SMBus or EEPROM interface options 8 2 1 6 Register 05h Device ID MSB BIT NUMBER BIT NAME DESCRIPTION 7 0 DID MSB Most Significant Byte of the Device ID This is a 16 bit device release number in BCD format assigned by OEM This field is set by the OEM using either the SMBus or EEPROM interface options SMSC USB251x 37 Revision 1 1 04 26 10 DATASHEET SMSC 8 2 1 7 USB 2 0 Hi Speed Hub Controller Datasheet 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 The hub is either self powered draws less than 2 mA of upstream bus power or bus powered limited to a 100 mA maximum of upstream power prior to being configured by the host controller When configured as a bus powered device the SMSC hub consumes less than 100 mA of current prior to being configured After configuration the bus powered SMSC hub along with all associated hub circuitry any embedded devices if part of a compound device and 100 mA per externally available downstream port must consume no more than 500 mA of upstream VBUS current The current consumption is system dependent and
16. Medium 8 boost 11 Elevated electrical drive strength High 12 boost 5 4 BOOST IOUT 3 USB electrical signaling drive strength Boost Bit for Downstream Port 3 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength Medium 8 boost 11 Elevated electrical drive strength High 71296 boost 3 2 BOOST IOUT 2 USB electrical signaling drive strength Boost Bit for Downstream Port 2 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength Medium 8 boost 11 Elevated electrical drive strength High 12 boost 1 0 BOOST IOUT 1 USB electrical signaling drive strength Boost Bit for Downstream Port 1 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength Medium 8 boost 11 Elevated electrical drive strength High 71296 boost Note Boost could result in non USB Compliant parameters OEM should use 00 value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels Revision 1 1 04 26 10 46 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet 8 2 1 30 R
17. 04 26 10 48 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet smsc 8 2 1 32 Register FCh PortMap 34 BIT NUMBER BIT NAME DESCRIPTION 7 0 PRTR34 PortMap register for ports 3 amp 4 When a hub is enumerated by a USB host controller the hub is only permitted to report how many ports it has the hub is not permitted to select a numerical range or assignment The host controller will number the downstream ports of the hub starting with the number 1 up to the number of ports that the hub reported having The host s port number is referred to as Logical Port Number and the physical port on the hub is the Physical Port Number When mapping mode is enabled see PRTMAP EN in Register 08h Configuration Data Byte 3 the hub s downstream port numbers can be mapped to different logical port numbers assigned by the host Note OEM must ensure that contiguous logical port numbers are used starting from 1 up to the maximum number of enabled ports this ensures that the hub s ports are numbered in accordance with the way a host will communicate with the ports Table 8 4 PortMap Register for Ports 3 amp 4 Bit 7 4 0000 Physical Port 4 is Disabled 0001 Physical Port 4 is mapped to Logical Port 1 0010 Physical Port 4 is mapped to Logical Port 2 0011 Physical Port 4 is mapped to Logical Port 3 0100 Physical Port 4 is mapped to Logical Port 4 010
18. 8 7 8 7 1 8 7 1 1 Hardware reset asserted RESET N smsc USB2513 13i and USB2514 14i Only The LED A x 1 pins are sampled after RESET negation and the logic values are used to configure the hub if the internal default configuration mode is selected The implementation shown in Figure 8 5 shows a recommended passive scheme When a pin is configured with a Strap High configuration the LED functions with active low signaling and the PAD will sink the current from the external supply When a pin is configured with a Strap Low configuration the LED functions with active high signaling and the PAD will source the current to the external LED Reset There are two different resets that the hub experiences One is a hardware reset via the RESET N pin and the second is a USB Bus Reset External Hardware RESET N A valid hardware reset is defined as assertion of RESET for a minimum of 1 us after all power supplies are within operating range While reset is asserted the hub and its associated external circuitry consumes less than 500 uA of current from the upstream USB power source Assertion of RESET N external pin causes the following 1 All downstream ports are disabled and PRTPWR power to downstream devices is removed unless BC EN is enabled The PHYs are disabled and the differential pairs will be in a high impedance state All transactions immediately terminate no states are saved All int
19. Icrst PART MIN TYP MAX UNITS COMMENTS USB2512B 550 1100 All supplies combined USB2512Bi 550 1250 USB2513B 650 1200 USB2513Bi 650 1400 USB2514B 750 1400 USB2514Bi 750 1600 Table 9 10 Pin Capacitance for USB251x USB251xi USB251xA USB251xAi LIMITS PARAMETER SYMBOL MIN MAX UNIT TEST CONDITION Clock Input CxTAL 2 pF All pins except USB pins and the pins Capacitance under the test tied to AC ground Input Capacitance Cin 10 pF See Note 9 5 Output Capacitance Cour 20 pF Table 9 11 Pin Capacitance for USB251xB and USB251xBi LIMITS PARAMETER SYMBOL MIN MAX UNIT TEST CONDITION Clock Input CXTAL 6 pF All pins except USB pins and the pins Capacitance under the test tied to AC ground Input Capacitance CiN 6 pF See Note 9 5 Output Capacitance 6 9 5 SMSC USB251x Capacitance T4 25 fc 1 MHz VDD33 3 3 V 67 DATASHEET Revision 1 1 04 26 10 SMSE USB 2 0 Hi Speed Hub Controller Datasheet 9 2 1 Package Thermal Specifications Thermal parameters are measured or estimated for devices with the exposed pad soldered to thermal vias in a multilayer 2 2 PCB per JESD51 Thermal resistance is measured from the die to the ambient air The values provided are based on the package body die size maximum power
20. Revision 1 1 04 26 10 USB 2 0 High Speed 2 Port Hub Controller Datasheet 6 0 Apog 8 e1nBi4 GALVOIGNI SHL NIHLIM 2317001 38 LSNW 118 TVNOILdO 38V S3l3l LN3GI IWNINYSL 30 79134 IWNINYSL 3H L WO H4 060 940 N33M438 SI LI ANY STVNINYSL GALV1d OL S3l1ddV 4 SNOISN3WIQ T1VIS3 LVIA Lv 00 SI Q3SOdX3 ANY TVNIIAS3 L HOV3 30 101 NOILISOd 2 NI SNOISN3WIQ 4 090 690 820 orv 39 09 TWNOILdO SI 1104 E AL SALON HOLId TIVNIINSH3 L 080 TVNIINSH3 L 050 6500 8 0 IVWNINYSL 080 05 0 1 371 A X 0 olt 00 371 dVO A X 969 509 3218 AQOH GL 007 589 SSANMOIHL dvO 060 5 ev AAOGNVLS 500 200 0 LY 1 39VMOVd TIVH3AO 001 0 0 x SS390sd 3ON3lH3dX3 NO Q3SV8 SNOISN3MWIQ NH3 LIVd 82d SHL ASIGOW AV WOLLOG Vy aasodxa iret UUUUU UUUUU NN NN NA AANANNANANNANA H og MAIA dOL
21. Revision 1 1 04 26 10 76 SMSC USB251x DATASHEET
22. and from bus powered to self powered if the local power source is restored When dynamic power switching is enabled the hub detects the availability of a local power source by monitoring the external LOCAL pin If the hub detects a change in power source availability the hub immediately disconnects and removes power from all downstream devices and disconnects the upstream port The hub will then re attach to the upstream port as either a bus powered hub if local power is unavailable or a self powered hub if local power is available 0 No dynamic auto switching 1 Dynamic auto switching capable 6 Reserved Reserved 5 4 OverCurrent Timer Over current Timer delay 00 2 0 1 ms 01 2 4 0 ms 10 8 0 ms 11 16 0 ms 3 COMPOUND Compound Device Allows OEM to indicate that the hub is part of a compound see the USB specification for definition device The applicable port s must also be defined as having a Non Removable Device Note When configured via strapping options declaring a port as non removable automatically causes the hub controller to report that it is part of a compound device 0 No 1 Yes The hub is part of a compound device 2 0 Reserved Reserved SMSC USB251x 39 Revision 1 1 04 26 10 DATASHEET SMSE USB 2 0 Hi Speed Hub Controller Datasheet 8 2 1 9 Register 08h Configuration
23. or Program an external EEPROM The hub only has the capability to read external The external eeprom will be read even if it is blank or non populated and the hub will be configured with the values that are read SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet Please see the Internal Register Set Common to EEPROM and SMBus for a list of the available data fields Please visit www smsc com ftpdocs usb html to locate the configuration utility for the hub EEPROM data Select the e2prommap msi link to download the tool Each register has R W capability SMBUS and EEPROM Reset Values are 0x00 Reserved registers should be written to 0 unless otherwise specified Contents read should be ignored such as the case of R in the table below 8 2 1 Internal Register Set Common to EEPROM and SMBus Table 8 2 Internal Default EEPROM and SMBus Register Memory Map DEFAULT ROM VALUES HEXIDECIMAL Z a m mimm 2 N e N e N N t 99 9 wa o0 m a N ADDRESS REGISTER NAME ERER 12 00h Vendor ID LSB 24 01h Vendor ID MSB 04 02h Product ID LSB 12 13 14 12 13 14 17 03h Product ID MSB 25 04h Device ID LSB 00 AO 00 AO 00 05h Device ID MS
24. 22 29 40 Message Block Data Signal SUSP IND Active Suspend 28 39 45 Status Indicator TEST Test Pin 11 14 19 USBDM UP USB Bus Data 30 42 58 USBDP UP 31 43 59 Revision 1 1 04 26 10 20 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet SMSE Table 5 1 Pin List Alphabetical Order continued PIN NUMBERS 36 QFN 48QFN 64 QFN fos 99 3 cop za galas SS SS SYMBOL NAME 555 55 55 55 55 55 35 55 55 USBDM DN 1 Hi Speed USB 1 USBDM Data 3 USBDM DN 3 6 USBDM DN 4 8 8 USBDM DN 5 11 USBDM DN 6 53 USBDM DN T 55 USBDP DN 1 2 USBDP DN 2 USBDP DN 3 7 USBDP DN 4 9 9 USBDP DN 5 12 USBDP DN 6 54 USBDP DN T7 56 VBUS DET Upstream 27 35 44 VBUS Power Detection VDD33 3 3 V Power VDD33 10 VDD33 15 18 24 VDD33 23 30 46 VDD33 29 41 52 VDD33 36 48 57 VDD33 64 XTALIN Crystal Input 33 45 61 XTALOUT Crystal Output 32 44 60 SMSC USB251x 21 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMST 5 2 USB251x Pin Descriptions Grouped by Function Datasheet Table 5 2 USB251x Pin Descriptions BUFFER SYMBOL TYPE DESCRIPTION UPSTREAM USB 2 0 INTERFACES USBDM UP 10 0 USB Data USBDP UP These pins connect to the
25. 8 8 DIS 5 11 DIS 6 53 PRT DIS MIT 55 PRT DIS P 1 Port Disable 2 PRT DIS P 2 PRT DIS P 3 PRT DIS P 4 9 9 PRT DIS P 5 12 PRT DIS P 6 54 PRT DIS P 7 56 SMSC USB251x 19 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Datasheet Table 5 1 Pin List in Alphabetical Order continued PIN NUMBERS 36 QFN 48QFN 64 QFN _ lt lt mm _ _ 5 m SS 2 15331230 26 26 gt O 1 1 10 wow wow 1 CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN tn cn m m SYMBOL NAME 555 55 59 55 353 5552 55 55 PRTPWR 1 USB Port 12 15 29 PRTPWR 2 Grave 16 19 26 PRTPWR 3 18 21 23 PRTPWRI 4 20 27 20 30 PRTPWR 6 39 PRTPWRI7 36 PRTPWR_POL Port Power 38 Polarity Strapping PRTSWP 1 Port Swap 37 51 Strapping PRTSWP 2 Option 25 49 PRTSWPT S3 23 47 PRTSWPI4 13 33 PRTSWP 5 31 PRTSWPT 6 17 PRTSWP 7 15 RBIAS USB 35 47 63 Transceiver Bias RESET_N Reset Input 26 34 43 SCL Serial Clock 24 31 41 SDA Serial Data 22 29 40 Signal Select 48 MHz 40 SEL48 Clock Input SMBCLK System 24 31 41 Server
26. CRFILT T Controller Serial Interface Engine TT TT 1 Controller Routing amp Port Re Ordering Logic Port 1 Switch LED Drivers USB Data OC Port Downstream Sense Power Port OC Sense Switch Driver LED Drivers USB Data Port Downstream Sense Power Switch Switch LED LED Drivers Drivers The x indicates the number of available downstream ports 2 3 4 or 7 Figure 4 1 USB251x Hub Family Block Diagram Note 4 1 USB2512A USB2512Ai only supports a single transaction translator Note 4 2 The LED port indicators only apply to USB2513 13i 14 14i 48 only and USB2517 17i SMSC USB251x 11 Revision 1 1 04 26 10 DATASHEET SMSE USB 2 0 Hi Speed Hub Controller Datasheet Chapter 5 Pin Descriptions 5 1 SUSP IND LOCAL PWR NON REM 0 This chapter is organized by a set of pin configurations organized by package type followed by a corresponding pin list organized alphabetically A comprehensive and detailed description list of each signal named in the pin list is organized by function in Table 5 2 USB251x Pin Descriptions on page 22 Please refer to Table 5 3 Buffer Type Descriptions on page 27 for a list of buffer types The symbol in the signal name indicates that the activ
27. PRTPWR POL pin EN x IPD Battery Charging Strap Option This feature is only available on USB251xB Bi If this strap is enabled by package and configuration settings see Table 8 1 Hub Configuration Options this pin will be sampled at RESET N negation to determine if ports x 1 support the battery charging protocol and thus the supporting external port power controllers that would enable a device to draw the currents per the USB battery charging specification BC EN x 1 Battery charging feature is supported for port x BC EN x 0 Battery charging feature is not supported for port x Revision 1 1 04 26 10 22 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet Table 5 2 USB251x Pin Descriptions continued BUFFER SYMBOL TYPE DESCRIPTION DOWNSTREAM USB 2 0 INTERFACES continued LED A N x 1 012 Port LED Indicators This pin will be active low when LED support is enabled via EEPROM or SMBus PRTSWP x 1 Port Swap Strapping Option If this strap is enabled by package and configuration settings see Table 8 1 Hub Configuration Options this pin will be sampled at RESET N negation to determine the electrical connection polarity of the downstream USB port pins USB DP and USB DM Also the active state of the LED will be determined as follows Port polarity is normal LED is active high 1 Port polarity US
28. SMSC hub In this circuit when the LED pin is driven to a logic low state the Green LED will light up When the LED pin is driven to a Logic High state the Red LED will light up When a 1 KHz square wave is driven out on the LED pin the Green and Red LED s will both alternately light up giving the effect of the color Orange When nothing is driven out on the LED pin i e the pin floats to a tri state condition neither the Green nor Red LED will light up this is the Off state Datasheet The assignment is as follows LED A N x 1 LED D x 1 Downstream Port x 1 The usage is as follows LED A N x Driven to Logic Low LS device attached Green LED LED A N x Driven to Logic High FS device attached Red LED LED A N x Pulsed 1 KHz HS device attached Orange color by pulsing Red amp Green LED A N x is tri state No devices are attached or the hub is in suspend LED s are off Revision 1 1 04 26 10 30 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet Chapter 7 Battery Charging Support 7 1 General Description The battery charging feature is only available in USB251xB which represents USB2512B 3B 4B and USB2512Bi 3Bi 4Bi hub family products Any one or combination of downstream ports on the USB251xB hub can be configured to support battery charging The SMSC hub provides support for battery charging devices on a per port basis in compliance with the USB Battery Charging sp
29. Strap Optlon alee hee eed ae Rae 56 8 7 Reset sso ehe peda ES ee erence wing Ad woes 57 SMSC USB251x Revision 1 1 04 26 10 3 DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet 8 7 1 External Hardware RESET 57 8 7 2 USB Reset tque fue m ddd die a en e RU Re d 60 Chapter 9 DC 61 9 1 Maximum Guaranteed 1 61 9 2 Operating Conditions 2 ies Rem bx REOR ERR 61 9 2 1 Package Thermal 68 Chapter 10 AC Specificatli ns s uas exa E ac 69 10 1 OsScillator Crystal yr eR Sha pees Se ease WEILE 69 10 2 Ceramic Resonator unc eh lo are eu ce ease een ko ae weed 70 10 3 Clock ger RR ERE dede be Xd bred 70 10 3 1 SMBus Interface 70 10323 arenes 70 10 33 5 20 24 285424 eds eg PIPER 70 Chapter 11 Package Outlines 5 ie wide ee ae a a awa de ew eee 71 11 1 Tape and Reel
30. XTALIN Voltage on 0 5 2 5 V XTALOUT Note 9 1 Stresses above the specified 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 the operation sections of this specification is not implied Note 9 2 When powering this device from laboratory or system power supplies it is important that the absolute maximum ratings not be exceeded or device failure can result Some power supplies exhibit voltage spikes on their outputs when the AC power is switched on or off In addition voltage transients on the AC power line may appear on the DC output When this possibility exists it is suggested that a clamp circuit be used 9 2 Operating Conditions PARAMETER SYMBOL MIN MAX UNITS COMMENTS Commercial Ambient temperature in still air Operating TA 0 70 Only applies to USB251x and Temperature USB251xA products Extended Ambient temperature in still air Commercial TAE 0 85 C Only applies to USB251xB products Operating Temperature Industrial Ambient temperature in still air Operating T 40 85 C Only applies to USB251xi Temperature Al USB251xAi and USB251xBi products 3 3 V supply voltage VDD33 3 0 3 6 V Applies to all parts 3 3 V supply rise 0 400 us See Figure 9 1 time SMSC USB251x 61 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE
31. capacitance PM Crystal manufacturer s specification See Note 10 1 C Crystal load capacitance Total board or trace OEM board design capacitance Cs Stray capacitance SMSC IC and OEM board design CxTAL XTAL pin input capacitance SMSC IC C Load capacitors installed Calculated values based on Figure 10 2 Formula C OEM board to Find the Value of C1 and C2 See Note 10 2 C 2 x Co Cs 2 x C Co Figure 10 2 Formula to Find the Value of C4 and C5 Note 10 1 is usually included subtracted by the crystal manufacturer in the specification for and should be set to 0 for use in the calculation of the capacitance formulas in Figure 10 2 Formula to Find the Value of C1 and C2 However the OEM PCB itself may present a parasitic capacitance between XTALIN and XTALOUT For an accurate calculation of and take the parasitic capacitance between traces XTALIN and XTALOUT into account Note 10 2 Each of these capacitance values is typically approximately 18 pF 1 Only when SELA68 is available and supported SMSC USB251x 69 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller smsc 10 2 Ceramic Resonator Datasheet 24 MHz 350 ppm XTAL1 24 MHz Ceramic Resonator 2 Figure 10 3 Ceramic Resonator Usage with SMSC IC 10 3 External Clock 50 Duty cycle 1096 24 MHz 350 ppm Jitter lt 100 ps rms The external clock is recomme
32. ports upstream and downstream operate at a normal or boosted electrical level Also the active state of the LEDs will be determined as follows See Section 8 2 1 27 Register F6h Boost Up on page 45 and Section 8 2 1 29 Register F8h Boost 4 0 on page 46 for more information BOOST 1 0 BOOST IOUT 1 0 BOOST 1 0 00 LED B N 2 is active high LED B N 1 is active high BOOST 1 0 01 LED N 2 is active high LED B N 1 is active low BOOST 1 0 10 LED B N 2 is active low LED B N 1 is active high BOOST 1 0 11 LED B N 2 is active low LED B N 1 is active low PRTPWR POL IPU Port Power Polarity Strapping Port Power Polarity strapping determination for the active signal polarity of the x 1 PRTPWR pins While RESET N is asserted the logic state of this pin will through the use of internal combinatorial logic determine the active state of the PRTPWR pins in order to ensure that downstream port power is not inadvertently enabled to inactive ports during a hardware reset When RESET N is negated the logic value will be latched internally and will retain the active signal polarity for the PRTPWR x 1 pins 1 PRTPWR x 1 P N pins have an active high polarity PRTPWR x 1 P N pins have an active low polarity Warning Active low port power controllers may glitch the downstream port power when the system power is first applied Care should be taken when designing with
33. the OEM must ensure that the USB 2 0 specifications are not violated When configured as a self powered device 1 mA of upstream VBUS current is consumed and all ports are available with each port being capable of sourcing 500 mA of current This field is set by the OEM using either the SMBus or EEPROM interface options Please see the description under dynamic power for the self bus power functionality when dynamic power switching is enabled 0 Bus powered operation Self powered operation If dynamic power switching is enabled this bit is ignored and the LOCAL PWR pin is used to determine if the hub is operating from self or bus power Reserved Reserved HS DISABLE Hi speed Disable Disables the capability to attach as either a Hi Full Speed device and forces attachment as Full Speed only i e no Hi Speed support 0 Hi Full speed 1 Full speed Only Hi speed disabled MTT_ENABLE Multi TT enable Enables one transaction translator per port operation Not available on the USB2512A 12Ai Selects between a mode where only one transaction translator is available for all ports Single TT or each port gets a dedicated transaction translator Multi TT 0 Single TT for all ports T One per port when multiple TT s are supported EOP DISABLE EOP Disable Disables EOP generation at EOF1 when in Full Speed mode During FS operation only this permits the h
34. the external SMBus host All power supplies must have reached the operating levels mandated in Chapter 9 DC Parameters prior to or coincident with the assertion of RESET 8 7 2 USB Bus Reset In response to the upstream port signaling a reset to the hub the hub does the following Note The hub does not propagate the upstream USB reset to downstream devices 1 oa Sets default address to O Sets configuration to Unconfigured Negates PRTPWR x 1 to all downstream ports unless battery charging EN is enabled Clears all TT buffers Moves device from suspended to active if suspended Complies with Section 11 10 of the USB 2 0 specification for behavior after completion of the reset sequence The host then configures the hub and the hub s downstream port devices in accordance with the USB specification Note The hub does not propagate the upstream USB reset to downstream devices Revision 1 1 04 26 10 60 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet Chapter 9 DC Parameters smsc 9 1 Maximum Guaranteed Ratings PARAMETER SYMBOL MIN MAX UNITS COMMENTS Storage TsroR 55 150 C Temperature Lead Refer to JEDEC Specification J STD Temperature 020D 3 3 V suppl VDD33 4 6 V Applies to all parts Vallae PLLFILT Bh Voltage on 0 5 5 5 V I O pin Voltage on 0 5 4 0 V
35. upstream USB bus data signals host port or upstream hub VBUS DET 1 012 Detect Upstream VBUS Power Detects the state of Upstream VBUS power The SMSC hub monitors VBUS_DET to determine when to assert the internal D pull up resistor which signals a connect event When designing a detachable hub this pin should be connected to VBUS on the upstream port via a 2 to 1 voltage divider For self powered applications with a permanently attached host this pin must be connected to 3 3 V typically VDD33 DOWNSTREAM USB 2 0 INTERFACES USBDP DN x 1 IO U Hi Speed USB Data DIS P x 1 These pins connect to the downstream USB peripheral devices attached to the hub s port To disable pull up with a 10 K resistor to 3 3 V USBDM DN x 1 Downstream Port Disable Strap Option DIS M x 1 If this strap is enabled by package and configuration settings see Table 8 1 Hub Configuration Options then this pin will be sampled at RESET N negation to determine if the port is disabled To disable a port pull up both DIS M x 1 and DIS P x 1 pins corresponding to the port numbers PRTPWR x 1 O12 USB Power Enable Enables power to USB peripheral devices downstream When PRTPWR POL pin is unavailable the hub supports active high power controllers only When PRTPWR POL pin is available the active signal level of the PRTPWR pins is determined by the power polarity strapping function of the
36. 1 Physical Port 4 is mapped to Logical Port 5 0100 Physical Port 4 is mapped to Logical Port 6 0111 Physical Port 4 is mapped to Logical Port 7 1000 Reserved will default to 0000 value to 1111 3 0 0000 Physical Port 3 is Disabled 0001 Physical Port 3 is mapped to Logical Port 1 0010 Physical Port 3 is mapped to Logical Port 2 0011 Physical Port 3 is mapped to Logical Port 3 0100 Physical Port 3 is mapped to Logical Port 4 0101 Physical Port 3 is mapped to Logical Port 5 0110 Physical Port 3 is mapped to Logical Port 6 0111 Physical Port 3 is mapped to Logical Port 7 1000 Reserved will default to 0000 value to 1111 SMSC USB251x 49 Revision 1 1 04 26 10 DATASHEET SMSE USB 2 0 Hi Speed Hub Controller Datasheet 8 2 1 33 Register FDh PortMap 56 BIT NUMBER BIT NAME DESCRIPTION 7 0 56 PortMap register for ports 5 amp 6 When a hub is enumerated by a USB host controller the hub is only permitted to report how many ports it has the hub is not permitted to select a numerical range or assignment The host controller will number the downstream ports of the hub starting with the number 1 up to the number of ports that the hub reported having The host s port number is referred to as Logical Port Number and the physical port on the hub is th
37. 2 2 o 00025 gt a B ABS E x x x x Fa SSNS EE 2 2 2 zzz zz lt a zl Ai a Ai Ai gt gt gt gt 5 25 89 9 B oo 2 o B oo 8 o o 9 5 035 2 5 035 5 5 5 5 5 5 i Indicates pins on the bottom of the device Figure 5 6 7 Port 64 Pin QFN SMSC USB251x 17 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Datasheet Table 5 1 Pin List in Alphabetical Order PIN NUMBERS 36 QFN 48QFN 64 QFN mm mm 21 265 35 wow 1 N ow CN ow CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN tn cn e m mm tm SYMBOL NAME 555 55 55 58 55 55 55 55 55 Battery 12 12 12 2 Strap E 16 46 16 ption BC EN 3 18 18 BC 20 BOOST 0 PHY Boost 36 50 BOOST 1 je 24 48 ption CFG SEL 0 Configuration 24 31 41 Programming CFG SEL 1 Selection 25 32 42 CFG_SEL 2 33 13 CLKIN External Clock 33 45 61 Input CRFILT Core Regulator 14 17 25 Filter Capacitor GANG_EN Ganged Port 22 34 Power Strap Option G
38. 251xB Bi hub family products Battery Charging Enable Enables the battery charging feature for the corresponding port 0 Battery Charging support is not enabled 1 Battery charging support is enabled Bit 7 Reserved Bit 6 Reserved Bit 5 Reserved Bit 4 Controls Port 4 Bit 3 Controls Port 3 Bit 2 Controls Port 2 Bit 1 Controls Port 1 Bit O Reserved 8 2 1 27 Register F6h Boost Up BIT NUMBER BIT NAME DESCRIPTION 7 2 Reserved Reserved 1 0 BOOST IOUT USB electrical signaling drive strength Boost Bit for the Upstream Port 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength Medium 8 boost 11 Elevated electrical drive strength High 71296 boost Note Boost could result in non USB Compliant parameters OEM should use a 00 value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels 8 2 1 28 Register F7h Boost 7 5 BIT NUMBER BIT NAME DESCRIPTION 7 6 Reserved Reserved 5 4 BOOST IOUT 7 USB electrical signaling drive strength Boost Bit for Downstream Port 7 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength Medium 8 boost 11 Elevated elect
39. 7 5 1vNOILdO XP NY3LLYd 1 89d UUUUUUUUUUTUUQUUU 2 G 4 68302084 39N3ld3dX3 gt SNOISNAWIG 99 JHL AJIGOW AYN YISN JHL m o E E _ 090 9 a3soax3 x V a 820 X ZA 5 3 gt zi zaza 22 227 7 221 A 77 27 61 39 05 x zia d q 0 J TVNOILdO SI 1104 trn 0 mann Y 1 AN i i ta a 73 SMSC USB251x DATASHEET Revision 1 1 04 26 10 USB 2 0 Hi Speed Hub Controller P SMSC Datasheet 11 1 Tape and Reel Specifications 1 5 0 1 0 0 4 0 9 2 0 0 05 9 8 CARRIER 0 3040 05 16 0 0 3 13 30 1 1100 1 21 5 MIN Y EA 1 10 12 0 COVER TAPE HATCHED AREA SECTION A A FEED DIRECTION QFN 6x6mm Body DIMENSIONS AND PART ORIENTATION UNIT MM TAPE LENGTH amp PART QUANTITY TRAILER 14 pockets MIN COMPONENT 3000 components LEADER L 34 pockets MIN Figure 11 4 36 Pin Package Tape Spec
40. 8 PRTPWR 3 _ VDD33 ff 17 2 USBDM i 16 PRTPWRI2 EN 2I USBDP m cm 15 0033 XTALOUT 14 CRFILT XTALIN CLKIN _USB2514B 14Bi ocs Top View QFN 36 210 PLLFILT PRTPWR 1 BC RBIAS f i must be connected to VSS TEST VDD33 5 VDD33 lt A 0 s O T DIS P 1 ff Ma gt VDD33 77 Ef Pa Of 016 T DIS 2 PR 2 PR USBDP DN DIS 4 PR 4 PR USBDP DN DIS DIS DIS 1 1 PR 1 PR USBDP_DN DIS 3 PR 3 PR USBDP DN USBDM DN USBDM DN USBDM DN USBDM DN Figure 5 3 4 Port 36 pin QFN Note Battery charging enable is only available in the USB251xB Bi Revision 1 1 04 26 10 14 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller e Datasheet T SDA NON REM 1 HS IND CFG J SCL SMBCLK CFG_SEL 0 LED B N 1 0 LED A N 2 PRTSWP 2 LED A N 1 PRTSWPT 1 LED B 21 BOOST 1 PRTPWR POL i LED A N 3 PRTSWP 3 SUSP IND LOCAL PWR NON 0 l GANG EN SEL48 VDD33 f USBDM SMSC USEDP UP M USB2513 USB2513i View QFN 48 XTALOUT XTALIN CLKIN f PL
41. A Input Leakage Vin 0 to VDD33 O12 1 012 amp I OSD12 Type Buffer Low Output Level VoL 0 4 lo 12mA High Output Level VDD33 3 3 V 2 4 Output Leakage 12 mA lot 10 10 VDD33 3 3 V Hysteresis SD pad only Vuysc 250 350 mV VIN 0 to VDD33 Note 9 1 Note 9 3 Output leakage is measured with the current pins in high impedance Note 9 4 See USB 2 0 specification for USB DC electrical characteristics Table 9 2 Supply Current Unconfigured Hi Speed Host PART MIN TYP MAX UNITS COMMENTS USB2512 12i 12A 12Ai 90 95 mA USB2512B 12Bi 40 45 USB2513 13i 95 105 USB2513B 13Bi 40 45 USB2514 14i 95 105 USB2514B 14Bi 45 50 USB2517 17i 120 130 SMSC USB251x 63 Revision 1 1 04 26 10 DATASHEET SMSE USB 2 0 Hi Speed Hub Controller Datasheet Table 9 3 Supply Current Unconfigured Full Speed Host Iccintrs PART MIN TYP MAX UNITS COMMENTS USB2512 12i 12A 12Ai 80 85 mA USB2512B 12Bi 35 40 USB2513 13i 80 90 USB2513B 13Bi 35 40 USB2514 14i 80 90 USB2514B 14Bi 35 40 USB2517 17i 105 115 Table 9 4 Supply Current Configured Hi Speed Host PART MIN TYP MAX UNITS COMMENTS USB2512 130 155 mA This is the base current of one
42. AL PWR NON REMIO VDD33 USBDM UP USBDP UP XTALOUT XTALIN CLKIN PLLFILT RBIAS VDD33 ra 2 15 a 5 lt Dd x E m gt gt 5 E 0 o 9 2 24 41 488 lt 0 gt t TH gt 2 2 p m 5 5 USB2513 13i i USB2513B 13Bi 36 Ground Pad d i must be connected to VSS 4 NO s O O 18 i 17 16 15 14 13 12 11 10 iei iei iei Het et ete SENN Bea 9 2 o 90 90 gt a corr roc a a gt Z 2 7 gt 2 amp 5 4 8 n n n 286 m A m m m m 90 9 o 9 32 3 5 2 Figure 5 2 3 Port 36 PRTPWR 3 _ 3 5 PRTPWR 2 EN 2 VDD33 CRFILT 8 N 1 PRTPWR 1 EN 1 TEST VDD33 Note Battery charging enable EN is only available in the USB251xB Bi SMSC USB251x 13 DATASHEET Revision 1 1 04 26 10 USB 2 0 Hi Speed Hub Controller SMSE Datasheet SEL O REM 1 1 SCL SMBCLK HS IND CFG SEL SDA SMBDATA NON REM PRTPWRI4 ENI4 e 2 gt VDD33 OCS OCS SUSP IND LOCAL PWR NON 01 1
43. AR USB2512 12A 12B SMSC 251 E SUCCESS BY DESIGN PRODUCT FEATURES USB2514 14B USB2517 USB 2 0 Hi Speed Hub Controller Datasheet General Description The SMSC USB251x hub is a family of low power OEM configurable MTT multi transaction translator hub controller IC products for embedded USB solutions The x in the part number indicates the number of downstream ports available The SMSC hub supports low speed full speed and hi speed if operating as a hi speed hub downstream devices on all of the enabled downstream ports For a summary of the products documented in this datasheet please refer to the Chapter 1 USB251x Hub Family Differences Overview on page 7 Highlights High performance low power small footprint hub controller IC with 2 3 4 or 7 downstream ports indicated by the x in the part number Fully compliant with the USB 2 0 specification Enhanced OEM configuration options available through either a single serial 12 EEPROM SMBus slave port MultiTRAK High performance multiple transaction translator which provides one transaction translator per port PortMap Flexible port mapping and disable sequencing PortSwap Programmable USB differential pair pin locations ease PCB design by aligning USB signal lines directly to connectors PHYBoost Programmable USB signal drive strength for recovering signal integrity using 4 le
44. B 00 0A 00 0B 00 06h Configuration Data Byte 1 8B 9B 07h Configuration Data Byte 2 20 08h Configuration Data Byte 3 02 09h Non Removable Devices 00 OAh Port Disable Self 08 00 OBh Port Disable Bus 08 00 OCh Max Power Self 01 Power Bus 32 Hub Controller Max Current Self 01 OFh Hub Controller Max Current Bus 32 10h Power on Time 32 11h Language ID High 00 12h Language ID Low R 00 13h Manufacturer String Length R 00 14h Product String Length R 00 15h Serial String Length R 00 16h 53h Manufacturer String R 00 SMSC USB251x 35 Revision 1 1 04 26 10 DATASHEET SMSC Table 8 2 Internal Default and SMBus Register Memory Map continued USB 2 0 Hi Speed Hub Controller Datasheet DEFAULT ROM VALUES HEXIDECIMAL 4 a N N N N N S 5 4 wm o 9 t wa o ADDRESS REGISTER NAME cM ME 54h 91h Product String 00 92h CFh Serial String 00 DOh Battery Charging Enable R 00 EOh Reserved 00 R F5h Reserved 00 R 00 F6h Boost Up 00 F7h Boost 7 5 00 R 00 F8h Boost x 0 00 F9h Reserved 00 FAh Port Swap 00 FBh Port Map 12 00 FCh Port Map 34 00 R 00 FDh Port Map 56 R 00 FEh Port Map 7 R 00 FFh Status Command 00 Note SMBus register only 8 2 1 1 Reg
45. B DP and USB DM is swapped LED is active low LED 7 4 012 Enhanced Indicator Port LED for ports 4 7 Enhanced indicator LED for ports 4 7 This pin will be active low when LED support is enabled via EEPROM or SMBus LED B N 3 1 012 Enhanced Indicator Port LED for port 3 This pin will be active low when LED support is enabled via EEPROM SMBus EN Ganged Power Over current strap option This signal selects between ganged or individual port power and over current sensing If this strap is enabled by package and configuration settings see Table 8 1 Hub Configuration Options this pin will be sampled at RESET N negation to determine the mode as follows 0 Individual sensing and switching LED N 3 is active high Ganged sensing and switching LED N 3 is active low SMSC USB251x 23 Revision 1 1 04 26 10 DATASHEET SMSE USB 2 0 Hi Speed Hub Controller Datasheet Table 5 2 USB251x Pin Descriptions continued BUFFER SYMBOL TYPE DESCRIPTION DOWNSTREAM USB 2 0 INTERFACES continued LED N 2 1 012 Enhanced Indicator Port LED for ports 1 and 2 Enhanced indicator LED for ports 1 and 2 This pin will be active low when LED support is enabled via EEPROM or SMBus BOOST 1 0 If this strap option is enabled by package and configuration settings see Table 8 1 Hub Configuration Options this pin will be sampled at RESET N negation to determine if all PHY
46. Data Byte 3 BIT NUMBER BIT NAME DESCRIPTION 7 4 3 PRTMAP EN Port mapping enable Selects the method used by the hub to assign port numbers and disable ports 0 Standard mode 1 Port mapping mode 2 1 LED MODE LED Mode Selection The LED A x 1 N and LED B x 1 N pins support several different modes of operation depending upon OEM implementation of the LED circuit 00 USB Mode 01 2 Speed Indication Mode 10 Same 00 USB Mode 417 Same as 00 USB Mode Warning Do not enable an LED mode that requires LED pins that are not available in the specific package being used in the implementation Note The hub will only report that it supports LED s to the host when USB mode is selected All other modes will be reported as No LED Support 0 STRING EN Enables String Descriptor Support 0 String support disabled String support enabled 8 2 1 10 Register 09h Non Removable Device BIT NUMBER BIT NAME DESCRIPTION 7 0 Non removable Device Indicates which include non removable devices 0 port is removable 1 port is non removable Informs the host if one of the active ports has a permanent device that is undetachable from the hub Note The device must provide its own descriptor data When using the internal default option the NON REM 1 0 pins will designate the appropriate ports as being non removable Bit 7 Controls Por
47. LFILT Ground Pad RBIAS must be connected to VSS TNO TD 0 OD 2 22 o o O S 9 e b futu E SERE EE 5 5 5 5 8 5528 85 8 0 2 0 a 3585 9 5 Indicates pins the bottom of the device Figure 5 4 3 Port 48 Pin QFN SMSC USB251x 15 Revision 1 1 04 26 10 DATASHEET SMSE SCL SMBCLK SEL 0 J SDA SMBDATA NON 1 HS IND SEL 1 B 8 2 USB 2 0 Hi Speed Hub Controller Datasheet LED A N 1 PRTSWP 1 PRTPWR POL SUSP IND LOCAL PWR NON 0 LED B N 1 BOOST 0 LED A NI2 PRTSWP 2 B LED B N 2 BOOST 1 LED A PRTSWP 3 LED N 3 PRTPWR 3 B ocs WJ PRTPWR 2 VDD33 CRFILT B ocs PRTPWR 1 TEST Hl LED A PRTSWPI 4 SEL48 VDD33 SMSC USB2514 USB2514i Top View QFN 48 USBDM UP USBDP UP XTALOUT XTALIN CLKIN PLLFILT RBIAS Ground Pad must be connected to VSS VDD33 o 11 12 iei iei Het 2 0 0 gt 9 gt a A TE 5 amp 2 2 2 2 a4 4 6 1 1
48. Registers that are accessed with an invalid protocol are not updated A register is only updated following a valid protocol The only valid protocols are write block and read block which are described above The hub only responds to the hardware selected Slave Address 0101100x Attempting to communicate with the hub over SMBus with an invalid slave address or invalid protocol results in no response and the SMBus Slave Interface returns to the idle state The only valid registers that are accessible by the SMBus slave address are the registers defined in the Registers Section The hub does not respond to undefined registers 8 3 4 General Call Address Response The hub does not respond to a general call address of 0000 000b 8 3 5 Slave Device Time Out According to the SMBus specification version 1 0 devices in a transfer can abort the transfer in progress and release the bus when single clock low interval exceeds 25 ms MIN Devices that have detected this condition must reset their communication and be able to receive a new START condition no later than 35 ms TriMEour MAX Note Some simple devices do not contain a clock low drive circuit this simple kind of device typically resets its communications port after a start or stop condition The slave device time out must be implemented 8 3 6 Stretching the SCLK Signal The hub supports stretching of the SCLK by other devices on the SMBus The hub does not stret
49. T USB 2 0 Hi Speed Hub Controller Datasheet smsc Chapter 8 Configuration Options 8 1 8 1 1 8 1 2 CFG SEL 2 CFG SEL 1 CFG SEL 0 DESCRIPTION 0 Hub SMSC s USB 2 0 hub is fully specification compliant to the Universal Serial Bus specification version 2 0 April 27 2000 12 7 2000 and 5 28 2002 Errata Please reference Chapter 10 Hub specification for general details regarding hub operation and functionality The hub provides 1 Transaction Translator TT that is shared by both downstream ports defined as Single TT configuration The TT contains 4 non periodic buffers Hub Configuration Options The SMSC hub supports a large number of features some are mutually exclusive and must be configured in order to correctly function when attached to a USB host controller There are three principal ways to configure the hub SMBus EEPROM or by internal default settings with or without configuration option over rides In all cases the configuration method will be determined by the SEL 2 SEL 1 and SEL 0 pins immediately after RESET negation Please refer to Table 8 1 Hub Configuration Options for more information SMBus or EEPROM Interface Table 8 1 Hub Configuration Options 0 0 Internal Default Configuration without any over rides Strap options enabled Self powered operation enabled LED mode Speed when available on package Individual power switching Indi
50. acies SMSC reserves the right to make changes to specifications and product descriptions at any time without notice Contact your local SMSC sales office to obtain the latest specifications before placing your product order The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC s standard Terms of Sale Agreement dated before the date of your order the Terms of Sale Agreement The product may contain design defects or errors known as anomalies which may cause the product s functions to deviate from published specifications Anomaly sheets are available upon request SMSC products are not designed intended authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage Any and all such uses without prior written approval of an Officer of SMSC and further testing and or modification will be fully at the risk of the customer Copies of this document or other SMSC literature as well as the Terms of Sale Agreement may be obtained by visiting SMSC s website at http www smsc com SMSC is a registered trademark of Standard Microsystems Corporation SMSC Product names and company names are t
51. active low components When PRTPWR POL is not an available pin on the package the hub will only support active high power controllers OCS N x 1 IPU Over Current Sense Input from external current monitor indicating an over current condition RBIAS I R USB Transceiver Bias 12 0 1 resistor is attached from ground to this pin to set the transceiver s internal bias settings Revision 1 1 04 26 10 24 SMSC USB251x DATASHEET Datasheet USB 2 0 Hi Speed Hub Controller smsc Table 5 2 USB251x Pin Descriptions continued SYMBOL BUFFER TYPE DESCRIPTION SERIAL PORT INTERFACES SDA SMBDATA NON REM 1 08012 Serial Data signal SDA Server Message Block Data signal SMBDATA Non removable Port Strap Option If this strap is enabled by package and configuration settings see Table 8 1 this pin will be sampled in conjunction with LOCAL PWR SUSP IND NON 0 at RESET N negation to determine if ports 7 1 contain permanently attached non removable devices NON REN 1 0 NON REM 1 0 NON REN 1 0 NON RENM 1 0 11 When available ports 1 2 amp 3 are non removable 00 All ports are removable 01 Port 1 is non removable 10 Ports 1 amp 2 are non removable RESET N RESET Input The system can reset the chip by driving this input low The minimum active low pulse is 1 ps SCL SMBCLK SEL 0
52. as a compound device and the embedded peripheral reports 0 mA in its descriptors Note The USB 2 0 specification does not permit this value to exceed 100 mA 8 2 1 14 Register 0Dh Max Power Bus Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7 0 MAX_PWR_BP Max Power Bus_Powered Value in 2 mA increments that the hub consumes from an upstream port VBUS when operating as a bus powered hub This value includes the hub silicon along with the combined power consumption from VBUS of all associated circuitry on the board This value also includes the power consumption of a permanently attached peripheral if the hub is configured as a compound device and the embedded peripheral reports 0 mA in its descriptors 8 2 1 15 Register OEh Hub Controller Max Current For Self Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7 0 HC_MAX_C_SP Hub Controller Max Current Self Powered Value in 2 mA increments that the hub consumes from an upstream port VBUS when operating as self powered hub This value includes the hub silicon along with the combined power consumption from VBUS of all associated circuitry on the board This value does NOT include the power consumption of a permanently attached peripheral if the hub is configured as a compound device Note The USB 2 0 specification does not permit this value to exceed 100 mA A value of 50 decimal indicates 100 mA which is the default value 8 2 1 16 Register OFh Hub Controller Max Current Fo
53. atus indicators for the downstream ports Please note that no indication of port speed is possible in this mode The pins are utilized as follows LED A N x 1 7 Port x 1 green LED LED B N x 1 Port x 1 amber LED LED Mode Speed Indication The LED A x 1 N pins are used to provide connection status as well as port speed by using dual color LED s This scheme requires that the LED s be in the same package and that a third color is produced so that the user perceives both LED s as being driven simultaneously The LED A x 1 pins used in this mode are connected to x number of dual color LED s each LED pair in a single package These pins indicate the USB speed of each attached downstream device Each dual color LED provides two separate colors commonly Green and Red If each of these separate colors are pulsed on and off at a rapid rate a user will see a third color in this example Orange Using this method 4 different color states are possible Green Red Orange and Off 3 3V General Purpose Diode Connection to other Dual Color Diodes D1A Green LED Hub LED pin Current Limiting Resistor D1B Red LED EN Figure 6 1 Dual Color LED Implementation Example SMSC USB251x 29 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Figure 6 1 shows a simple example of how this LED circuit will be implemented The circuit should be replicated for each of the x LED pins on the
54. ceive a code load from an external processor via an SMBus interface The SMBus interface shares the same pins as the EEPROM interface if CFG_SEL 1 8 CFG SEL 0 activate the SMBus interface external EEPROM support is no longer available and the user defined descriptor data must be downloaded via the SMBus The SMSC hub waits indefinitely for the SMBus code load to complete and only appears as a newly connected device on USB after the code load is complete The hub s SMBus implementation is a slave only SMBus device The implementation only supports read block and write block protocols The hub responds to other protocols as described in Section 8 3 3 Invalid Protocol Response Behavior on page 54 Reference the System Management Bus specification Rev 1 0 The SMBus interface is used to read and write the registers in the device The register set is shown in Section 8 2 1 Internal Register Set Common to EEPROM and SMBus on page 35 8 3 1 SMBus Slave Addresses The SMBus slave address is 58h 01011000b 8 3 2 Bus Protocols Typical Write Block and Read Block protocols are shown below Register accesses are performed using 7 bit slave addressing an 8 bit register address field and an 8 bit data field The shading indicates the hub driving data on the SMBDATA line otherwise host data is on the SDA SMBDATA line The slave address is the unique SMBus Interface Address for the hub that identifies it on SMBus The register address f
55. ch the SCLK 8 3 7 SMBus Timing The SMBus Slave Interface complies with the SMBus AC Timing specification See the SMBus timing in the Timing Diagram section 8 3 8 Bus Reset Sequence The SMBus slave interface resets and returns to the idle state upon a START field followed immediately by a STOP field Revision 1 1 04 26 10 54 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet 8 3 9 8 3 9 1 8 3 9 2 8 4 8 5 8 6 smsc SMBus Alert Response Address The SMBALERT signal is not supported by the hub Undefined Registers The registers shown in Table 8 2 are the defined registers in the hub Reads to undefined registers return 00h Writes to undefined registers have no effect and do not return an error Reserved Registers Reserved registers should be written to 0 unless otherwise specified Contents read should be ignored Default Configuration Option To configure the SMSC hub in its default configuration strap SEL 2 0 to 00h This procedure configures the hub to the internal defaults and enables the strapping options Please see Section 8 2 1 Internal Register Set Common to EEPROM and SMBus for the list of the default values For specific pin strapping options please see Chapter 5 Pin Descriptions for instructions on how to modify the default values Options include port disable and non removable pin strapping Default Strapping Options The USB251x can be confi
56. ch additional downstream port 0 mA 0 mA USB251xB xBi 1 port 1 port Supply Current Configured base base Full Speed Host each additional downstream port mA 8 mA 8 mA SMSC USB251x 65 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Datasheet Table 9 6 USB251x xi xA xAi Supply Current Suspend PART MIN TYP MAX UNITS COMMENTS USB2512 12A 310 420 supplies combined USB2512i 12Ai 310 600 USB2513 310 420 USB2513i 310 550 USB2514 310 420 USB2514i 310 600 USB2517 310 610 82517 310 800 Table 9 7 USB251xB xBi Supply Current Suspend Icspy PART MIN TYP MAX UNITS COMMENTS USB2512B 475 1000 All supplies combined USB2512Bi 475 1200 USB2513B 500 1100 USB2513Bi 500 1300 USB2514B 550 1200 USB2514Bi 550 1500 Table 9 8 USB251x xi xA xAi Supply Current Reset Icrst PART MIN TYP MAX UNITS COMMENTS USB2512 12A 105 275 All supplies combined USB2512i 12Ai 105 400 USB2513 105 230 USB2513i 100 350 USB2514 100 275 USB2514i 100 400 USB2517 115 320 USB2517i 115 600 Revision 1 1 04 26 10 66 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet Table 9 9 USB251xB xBi Supply Current Reset
57. consumption 85 ambient temperature and 125 junction temperature of the die Table 9 12 Package Thermal Resistance Parameters USB2512 12i USB2512B 12Bi USB2513 13i USB2513B 13Bi USB2513 13i USB2514 14i USB2512A 12Ai USB2514B 14Bi USB2514 14i VELOCITY SYMBOL C W C W C W C W meters sec PACKAGE 36 PIN QFN 48 PIN QFN 34 2 36 2 40 1 31 6 0 29 9 33 4 35 0 27 6 1 0 3 0 4 0 5 0 3 0 0 5 0 7 0 7 0 4 1 3 0 5 1 6 3 3 0 0 3 0 5 1 6 3 3 0 1 Use the following formulas to calculate junction temperature OJA OJc Table 9 13 Legend SYMBOL DESCRIPTION Tj Junction temperature P Power dissipated OJA Junction to ambient temperature Junction to top of package Junction to bottom of case TA Ambient temperature Tc Temperature of the bottom of the case Temperature of the top of the case Revision 1 1 04 26 10 68 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet Chapter 10 AC Specifications 10 1 Oscillator Crystal Crystal Parallel Resonant Fundamental Mode 24 48 MHz 350 ppm External Clock 50 Duty cycle 10 24 48 MHz 350 ppm Jitter lt 100 ps rms XTAL1 1 XTAL2 Cs2 2 2 Figure 10 1 Typical Crystal Circuit Table 10 1 Crystal Circuit Legend SYMBOL DESCRIPTION IN ACCORDANCE WITH Crystal shunt
58. down resistor IPU Input with internal weak pull up resistor IS Input with Schmitt trigger O12 Output 12 mA SMSC USB251x 27 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Table 5 3 Buffer Type Descriptions continued BUFFER DESCRIPTION 1 012 Input Output buffer with 12 mA sink and 12 mA source 705012 Open drain with Schmitt trigger and 12 mA sink Meets the I C Bus specification version 2 1 requirements ICLKx XTAL clock input OCLKx XTAL clock output I R RBIAS I O U Analog Input Output defined in USB specification Revision 1 1 04 26 10 28 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet smsc Chapter 6 LED Usage Description 6 1 6 1 1 6 1 2 LED Functionality USB2513 and USB2514 48 pin QFN only and USB2517 17i SMSC hubs support two different mutually exclusive LED modes The represents the number of downstream ports The USB mode provides up to 14 LED s that conform to the USB 2 0 specification functional requirements for Green and Amber LED s The LED mode speed indicator provides the downstream device connection speed USB Mode 14 Wire The LED A N x 1 pins are used to provide Green LED support as defined in the USB 2 0 specification The LED B N x 1 pins are used to provide Amber LED support as defined in the USB 2 0 specification The USB specification defines the LED s as port st
59. downstream port USB2512i 130 160 USB2512A 120 145 USB2512Ai 120 150 USB2512B 60 65 USB2512Bi 60 70 USB2513 150 180 USB2513i 150 185 USB2513B 65 70 USB2513Bi 65 75 USB2514 155 200 USB2514i 155 205 USB2514B 70 80 USB2514Bi 70 85 1882517 240 275 0882517 240 280 Revision 1 1 04 26 10 64 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet Table 9 4 Supply Current Configured Hi Speed Host lucu PART MIN TYP MAX UNITS COMMENTS USB251x xi xA xAi 1 port 1 port Supply Current Configured base base Hi Speed Host each additional downstream port mA 15 mA 40 mA USB251xB xBi 1 port 1 port Supply Current Configured base base Hi Speed Host each additional downstream port mA 25 mA 25 mA Table 9 5 Supply Current Configured Full Speed Host Igcc PART MIN TYP MAX UNITS COMMENTS USB2512 105 125 mA This is the base current of one downstream port USB2512i 105 135 USB2512A 95 115 USB2512Ai 95 125 USB2512B 45 50 USB2512Bi 45 55 USB2513 125 135 USB2513i 125 140 USB2513B 50 55 USB2513Bi 50 60 USB2514 140 150 USB2514i 140 155 USB2514B 50 60 USB2514Bi 50 65 USB2517 215 220 USB2517i 215 225 USB251x xi xA xAi 1 port 1 port There is no additional current for Supply Current Configured base base additional ports Full Speed Host ea
60. e Physical Port Number When mapping mode is enabled see PRTMAP EN in Register 08h Configuration Data Byte 3 the hub s downstream port numbers can be mapped to different logical port numbers assigned by the host Note OEM must ensure that contiguous logical port numbers are used starting from 1 up to the maximum number of enabled ports this ensures that the hub s ports are numbered in accordance with the way a host will communicate with the ports Table 8 5 PortMap Register for Ports 5 amp 6 Bit 7 4 0000 Physical Port 6 is Disabled 0001 Physical Port 6 is mapped to Logical Port 1 0010 Physical Port 6 is mapped to Logical Port 2 0011 Physical Port 6 is mapped to Logical Port 3 0100 Physical Port 6 is mapped to Logical Port 4 0101 Physical Port 6 is mapped to Logical Port 5 0100 Physical Port 6 is mapped to Logical Port 6 0111 Physical Port 6 is mapped to Logical Port 7 1000 Reserved will default to 0000 value to 1111 3 0 0000 Physical Port 5 is Disabled 0001 Physical Port 5 is mapped to Logical Port 1 0010 Physical Port 5 is mapped to Logical Port 2 0011 Physical Port 5 is mapped to Logical Port 3 0100 Physical Port 5 is mapped to Logical Port 4 0101 Physical Port 5 is mapped to Logical Port 5 0110 Physical Port 5 is mapped to Logical Port 6 0111 Physical Port 5 i
61. e or asserted state occurs when the signal is at a low voltage level When N is not present after the signal name the signal is asserted when it is at the high voltage level The terms assertion and negation are used exclusively This is done to avoid confusion when working with a mixture of active low and active high signals The term assert or assertion indicates that a signal is active independent of whether that level is represented by a high or low voltage The term negate or negation indicates that a signal is inactive Pin Configurations and Lists Organized by Package Type HS IND CFG_SEL 1 SCL SMBCLK CFG_SEL 0 SDA SMBDATA NON vBUS DET RESET EI NC VDD33 OCS 2 USBDM UP PRTPWR 2 USBDP UP SMSC VDD33 XTALOUT USB2512 12A 12B XTALIN CLKIN USB2512i 12Ai 12Bi OCS N 1 Top View QFN 36 duh PLLFILT i PRTPWR 1 RBIAS VDD33 must be connected to VSS p mg mig 21 25 USBDP DN USBDM DN USBDM DN USBDP DN Indicates pins the bottom of the device Figure 5 1 2 Port 36 Pin QFN TEST VDD33 Note Battery charging enable EN is only available in the USB251xB Bi Revision 1 1 04 26 10 12 DATASHEET SMSC USB251x USB 2 0 Hi Speed Hub Controller Datasheet SUSP IND LOC
62. e hardware configuration process has completed If the port detects an over current condition PRTPWR will be turned off to protect the circuitry from overloading If an over current condition is detected when the hub is not enumerated PRTPWR can only be turned on from the host or if RESET is toggled These SMSC USB251x 31 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller P smsc Datasheet behaviors provide battery charging even when the hub is not enumerated and protect the hub from sustained short circuit conditions If the short circuit condition persists when the hub is plugged into a host system the user is notified that a port has an over current condition Otherwise the PRTPWR is turned on by the host system and the port operates normally 7 3 Battery Charging Configuration Configuration of ports to support battery charging is done through a strap option on the corresponding ports PRTPWR x BC EN x pin see Chapter 5 Pin Descriptions or through EEPROM or SMBus configuration load 7 3 1 Battery Charging enabled via EEPROM or SMBus Register memory map location OxDO is allocated for battery charging support The Battery Charging register at location OxDO starting from Bit 1 enables battery charging for each downstream port when asserted Bit 1 represents port 1 and so on Each port with battery charging enabled asserts the corresponding PRTPWR x 0 pin Revision 1 1 04 26 10 32 SMSC USB251x DATASHEE
63. e ports 0 Port is available 1 Port is disabled During self powered operation when mapping mode is disabled PRTMAP EN 0 this selects the ports which will be permanently disabled and are not available to be enabled or enumerated by a host Controller The ports can be disabled in any order the internal logic will automatically report the correct number of enabled ports to the USB host and will reorder the active ports in order to ensure proper function When using the internal default option the DIS P x 1 and DIS M x 1 pins will disable the appropriate ports Bit 7 Controls Port 7 Bit 6 Controls Port 6 Bit 5 Controls Port 5 Bit 4 Controls Port 4 Bit 3 Controls Port 3 Bit 2 Controls Port 2 Bit 1 Controls Port 1 Bit 0 is Reserved always 0 SMSC USB251x 41 Revision 1 1 04 26 10 DATASHEET SMSC USB 2 0 Hi Speed Hub Controller Datasheet 8 2 1 13 Register 0Ch Max Power For Self Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7 0 MAX PWR SP Max Power Self Powered Value in 2 mA increments that the hub consumes from an upstream port VBUS when operating as a self powered hub This value includes the hub silicon along with the combined power consumption from VBUS of all associated circuitry on the board This value also includes the power consumption of a permanently attached peripheral if the hub is configured
64. ecification version 1 1 The hub can be configured to individually enable each downstream port for battery charging support either via pin strapping as illustrated in Figure 7 1 or by setting the corresponding configuration bits via EEPROM or SMBus 3 3 V 5V USB Port Power Controller IN USB251xB xBi PRTPWR x E VBUS Note Rstrap enables battery charging Figure 7 1 Battery Charging via External Power Supply 7 2 USB Battery Charging A downstream port enabled for battery charging turns on port power as soon as the configuration process has completed The hub does not need to be enumerated nor does VBUS DET need to be asserted for the port power to be enabled These conditions allow battery charging in S3 S4 and S5 system power states as well as in the fully operational state The USB Battery Charging specification does not interfere with standard USB operation which allows a device to perform battery charging at any time A port that supports battery charging must be able to support 1 5 amps of current on VBUS Standard USB port power controllers typically only allow for 0 8 amps of current before detecting an over current condition Therefore the 5 volt power supply port power controller or over current protection devices must be chosen to handle the larger current demand compared to standard USB hub designs 7 2 1 Special Behavior of PRTPWR Pins The SMSC hub enables VBUS by asserting the port power PRTPWR pin as soon as th
65. egister FAh Port Swap BIT NUMBER BIT NAME DESCRIPTION 7 0 PRTSP Port Swap Swaps the Upstream and Downstream USB DP and DM Pins for ease of board routing to devices and connectors 0 USB functionality is associated with the DP pin and D functionality is associated with the DM pin 1 USB D functionality is associated with the DM pin and D functionality is associated with the DP pin Bit 7 Controls Port 7 Bit 6 Controls Port 6 Bit 5 Controls Port 5 Bit 4 Controls Port 4 Bit 3 Controls Port 3 Bit 2 Controls Port 2 Bit 1 Controls Port 1 Bit O When this bit is 1 the upstream port DP DM is swapped SMSC USB251x 47 Revision 1 1 04 26 10 DATASHEET SMSE USB 2 0 Hi Speed Hub Controller Datasheet 8 2 1 31 Register FBh PortMap 12 BIT NUMBER BIT NAME DESCRIPTION 7 0 PRTR12 PortMap register for ports 1 amp 2 When a hub is enumerated by a USB host controller the hub is only permitted to report how many ports it has the hub is not permitted to select a numerical range or assignment The host controller will number the downstream ports of the hub starting with the number 1 up to the number of ports that the hub reported having The host s port number is referred to as Logical Port Number and the physical port on the hub is the Physical Port Number When mapping mode is enabled see PRTMAP EN in Register 08h Configuration Data Byte 3 the hub s downstrea
66. ernal registers return to the default state most cases 00 The external crystal oscillator is halted The PLL is halted The hub is operational 500 after RESET is negated Once operational the hub immediately reads OEM specific data from the external EEPROM if the SMBus option is not disabled RESET for Strapping Option Configuration Drive Strap Attach Start Read Strap Outputs to USB USB Reset Idle completion Options inactive Upstream recovery request levels E t5 gt 4 ti pe 18 gt Figure 8 6 Reset Timing for Default Strap Option Mode SMSC USB251x 57 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Datasheet Table 8 8 Reset N Timing for Default Strap Option Mode NAME DESCRIPTION MIN TYP MAX UNITS t RESET Asserted 1 2 Strap Setup Time 16 7 nsec t3 Strap Hold Time 16 7 1400 nsec t4 hub outputs driven to inactive logic states 1 5 2 5 USB Attach See Note 100 msec t6 Host acknowledges attach and signals USB 100 msec Reset t7 USB Idle undefined msec t8 Completion time for requests with or without data 5 msec stage Notes When in bus powered mode the hub and its associated circuitry must not consume more than 100 mA from the upstream USB power source during t1 t5 All power supplies must have reached the operati
67. g Internal Default Configuration with the following over rides Strap options disabled LED mode USB when available on package Ganged port power switching Ganged over current sensing 8 1 2 1 8 1 3 8 2 Revision 1 1 04 26 10 34 Note When the CFG_SEL 2 pin is unavailable then the logic is internally tied to 0 Power Switching Polarity When the PRTPWR_POL pin is unavailable 3 and 4 port 48 pin packages only the hub only supports active high port power controllers VBus Detect According to Section 7 2 1 of the USB 2 0 specification a downstream port can never provide power to its D or D pull up resistors unless the upstream port s VBUS is in the asserted powered state The VBUS_DET pin on the hub monitors the state of the upstream VBUS signal and will not pull up the D resistor if VBUS is not active If VBUS goes from an active to an inactive state Not Powered the hub will remove power from the D pull up resistor within 10 seconds EEPROM Interface The SMSC hub can be configured via a 2 wire 12 256 8 Please see Table 8 1 Hub Configuration Options for specific details on how to enable configuration via an The internal state machine will when configured for EEPROM support read the external EEPROM for configuration data The hub will then attach to the upstream USB host Note The hub does not have the capacity to write
68. g length is 31 characters 62 bytes Note The string consists of individual 16 bit UNICODE UTF 16LE characters The Characters will be stored starting with the LSB at the least significant address and the MSB at the next 8 bit location subsequent characters must be stored in sequential contiguous address in the same LSB MSB manner Some EEPROM programmers may transpose the MSB and LSB thus reversing the Byte order Please pay careful attention to the Byte ordering or your selected programming tools 8 2 1 25 Register 92h CFh Serial String BIT NUMBER BIT NAME DESCRIPTION 7 0 SER STR Serial String UNICODE UTF 16LE per USB 2 0 specification When supported the maximum string length is 31 characters 62 bytes Note The string consists of individual 16 bit UNICODE UTF 16LE characters The Characters will be stored starting with the LSB at the least significant address and the MSB at the next 8 bit location subsequent characters must be stored in sequential contiguous address in the same LSB MSB manner Some EEPROM programmers may transpose the MSB and LSB thus reversing the Byte order Please pay careful attention to the Byte ordering or your selected programming tools Revision 1 1 04 26 10 44 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller e Datasheet 8 2 1 26 Register DOh Battery Charging Enable BIT NUMBER BIT NAME DESCRIPTION 7 0 _ Only available USB
69. gured via a combination of internal default values and pin strap options Please see Table 8 2 for specific details on how to enable the default pin strap configuration option The strapping option pins only cover a limited sub set of the configuration options The internal default values will be used for the bits amp registers that are not controlled by a strapping option pin Please refer to Table 8 2 for the internal default values that are loaded when this option is selected Strap Options Table 8 7 Summary of Strap Options Part 058251 Resistor Value Number USB251xi USB251xB R USB251xA USB251xBi USB251xAi Normal Y 47 100 Internal Pull Down 2 10 kQ Only applicable to port power pins Contains a built in resistor LED Y Y 47 100 8 6 1 Non Removable Strap Option The strap function of the NON_REM x 0 pins are enabled through the internal default configuration The driver type of each strap pin is no internal pull up or pull down for the input function Use this type of strap option for NON REM 1 0 Figure 8 3 shows an example of Strap High and Strap Low Use the Strap High configuration to set the strap option value to a 1 Use the Strap Low configuration to set the strap option value to 0 SMSC USB251x 55 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMST MM Primary Function Strap Low RkQ GND Figure 8 3 Non Removable Pin St
70. he trademarks of their respective holders SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE TITLE AND AGAINST INFRINGEMENT AND THE LIKE AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT INCIDENTAL INDIRECT SPECIAL PUNITIVE OR CONSEQUENTIAL DAMAGES OR FOR LOST DATA PROFITS SAVINGS OR REVENUES OF ANY KIND REGARDLESS OF THE FORM OF ACTION WHETHER BASED ON CONTRACT TORT NEGLIGENCE OF SMSC OR OTHERS STRICT LIABILITY BREACH OF WARRANTY OR OTHERWISE WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Revision 1 1 04 26 10 2 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet Table of Contents Chapter 1 USB251x Hub Family Differences Overview 7 Chapter 2 General 8 Chapter 3 Acronyms AONO CRGA e COR 10 Chapter 4 Block 11 Chapters Pin Descriptions sues as e ERR ER Ed 12 5 1 Pin Configurations and Lists Organized by Package Type 12 52 USB251x Pin Descriptions Grouped by 22 53 Buffer Type Descriptions
71. ield is the internal address of the register to be accessed The register data field is the data that the host is attempting to write to the register or the contents of the register that the host is attempting to read Note Data bytes are transferred MSB first 8 3 2 1 Block Read Write The block write begins with a slave address and a write condition After the command code the host issues a byte count which describes how many more bytes will follow in the message If a slave had 20 bytes to send the first byte would be the number 20 14h followed by the 20 bytes of data The byte count may not be 0 A block read or write is allowed to transfer a maximum of 32 data bytes Note For the following SMBus tables beneotes Master to Slave Denotes Slave to Master 1 7 1 1 8 1 s Save nass wi Resister aaaress TX 8 1 8 1 8 1 8 1 1 Block Write Figure 8 1 Block Write SMSC USB251x 53 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE 8 3 2 2 A block read differs from a block write in that the repeated start condition exists to satisfy the 2 specification s requirement for a change in transfer direction 1 7 1 1 8 1 1 7 1 1 s stave Adaress wr T Register Address Stave address Ra A 8 1 8 1 8 1 8 1 1 Sy Cours NT A T Block Read Figure 8 2 Block Read 8 3 3 Invalid Protocol Response Behavior
72. ifications Revision 1 1 04 26 10 74 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet 1 5 0 1 0 0 4 0 2 0 0 05 CARRIER 0 30 0 05 EN Eo i 175 6 6 o 75 01 23 25 16 0 0 3 7 25 7 25 13 320 1 301200 91 5 AC L 110 12 0 COVER HATCHED AREA FEED DIRECTION QFN 7x7mm Body TAPE DIMENSIONS AND PART ORIENTATION UNIT MM TAPE LENGTH amp PART QUANTITY TRAILER 14 pockets MIN COMPONENT 3000 components LEADER L 34 pockets MIN Figure 11 5 48 Pin Package Tape Specifications SMSC USB251x 15 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller P SMSC Datasheet REEL PHYSICAL DIMENSIONS W1 MEASURED HUB SEE DETAIL A ML 21 W2 MEASURED AT HUB DIAMETER D 330 40 25 4 00 SPACE between FLANGES 164 2 0 0 0 FLANGE OVERALL WITH 224 D3 MIN SPACE W1 AT FLANGE EDGE w3 16 3 MIN OUTER DIAMETER D1 102 REF B HUB KEY SLIT DIAMETER D2 20 2 MIN ARBOR HOLE DIAMETER D3 13 0 0 5 0 2 DETAIL A KEY SLIT WIDTH B 2 0 40 5 Reel Labels ER 2 600000000000 OOo Direction of 4 Figure 11 6 36 Pin and 48 Pin Package Reel Specifications
73. ing Length When supported the maximum string length is 31 characters 8 2 1 21 Register 14h Product String Length BIT NUMBER BIT NAME DESCRIPTION 7 0 PRD_STR_LEN Product String Length When supported the maximum string length is 31 characters 8 2 1 22 Register 15h Serial String Length BIT NUMBER BIT NAME DESCRIPTION 7 0 SER_STR_LEN Serial String Length When supported the maximum string length is 31 characters SMSC USB251x 43 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSE Datasheet 8 2 1 23 Register 16h 53h Manufacturer String BIT NUMBER BIT NAME DESCRIPTION 7 0 STR Manufacturer String UNICODE UTF 16LE per USB 2 0 specification When supported the maximum string length is 31 characters 62 bytes Note The string consists of individual 16 bit UNICODE UTF 16LE characters The Characters will be stored starting with the LSB at the least significant address and the MSB at the next 8 bit location subsequent characters must be stored in sequential contiguous address in the same LSB MSB manner Some EEPROM programmers may transpose the MSB and LSB thus reversing the Byte order Please pay careful attention to the Byte ordering or your selected programming tools 8 2 1 24 Register 54h 91h Product String BIT NUMBER BIT NAME DESCRIPTION 7 0 PRD STR Product String UNICODE UTF 16LE per USB 2 0 specification When supported the maximum strin
74. ior to or coincident with the assertion of RESET 8 7 1 3 RESET N for SMBus Slave Configuration Start Hariwang Reset SMBus Code Hub PHY Attach USB Reset completion reset USB Idle Negation Load Stabilization recovery request asserted Upstream 05 555 550 1 1 4 11 U 1 1 1 M MEO 1 1 VSS ON Figure 8 8 Reset Timing for SMBus Mode Table 8 10 Reset N Timing for SMBus Mode NAME DESCRIPTION MIN TYP MAX UNITS 11 RESET Asserted 1 2 Hub Recovery Stabilization 500 t3 SMBus Code Load See Note 250 300 msec t4 Hub Configuration and USB Attach 100 msec t5 Host acknowledges attach and signals USB 100 msec Reset t6 USB Idle Undefined msec t7 Completion time for requests with or without data 5 msec stage Notes a For bus powered configurations the 99 5 ms MAX is required and the hub and its associated circuitry must not consume more than 100 mA from the upstream USB power source during SMSC USB251x 59 Revision 1 1 04 26 10 DATASHEET SMSC USB 2 0 Hi Speed Hub Controller Datasheet t2 t3 t4 t5 t6 t7 For Self Powered configurations t3 MAX is not applicable and the time to load the configuration is determined by
75. ister 00h Vendor ID LSB BIT NUMBER BIT NAME DESCRIPTION 7 0 VID LSB Least Significant Byte of the Vendor ID This is a 16 bit value that uniquely identifies the Vendor of the user device assigned by USB Interface Forum This field is set by the OEM using either the SMBus or EEPROM interface options 8 2 1 2 Register 01h Vendor ID MSB BIT NUMBER BIT NAME DESCRIPTION 7 0 VID MSB Most Significant Byte of the Vendor ID This is a 16 bit value that uniquely options identifies the Vendor of the user device assigned by USB Interface Forum This field is set by the OEM using either the SMBus or EEPROM interface Revision 1 1 04 26 10 DATASHEET SMSC USB251x USB 2 0 Hi Speed Hub Controller SMSC Datasheet 8 2 1 3 Register 02h Product ID LSB BIT NUMBER BIT NAME DESCRIPTION 7 0 LSB Least Significant Byte the Product ID This is a 16 bit value that the Vendor can assign that uniquely identifies this particular product assigned by OEM This field is set by the OEM using either the SMBus or EEPROM interface options 8 2 1 4 Register 03h Product ID MSB BIT NUMBER BIT NAME DESCRIPTION 7 0 PID MSB Most Significant Byte of the Product ID This is a 16 bit value that the Vendor can assign that uniquely identifies this particular product assigned by OEM This field is set by the OEM using either the SMBus or EEPROM interface options
76. m port numbers can be mapped to different logical port numbers assigned by the host Note OEM must ensure that contiguous logical port numbers are used starting from 1 up to the maximum number of enabled ports this ensures that the hub s ports are numbered in accordance with the way a host will communicate with the ports Table 8 3 PortMap Register for Ports 1 amp 2 Bit 7 4 0000 Physical Port 2 is Disabled 0001 Physical Port 2 is mapped to Logical Port 1 0010 Physical Port 2 is mapped to Logical Port 2 0011 Physical Port 2 is mapped to Logical Port 3 0100 Physical Port 2 is mapped to Logical Port 4 0101 Physical Port 2 is mapped to Logical Port 5 0100 Physical Port 2 is mapped to Logical Port 6 0111 Physical Port 2 is mapped to Logical Port 7 1000 Reserved will default to 0000 value to 1111 3 0 0000 Physical Port 1 is Disabled 0001 Physical Port 1 is mapped to Logical Port 1 0010 Physical 1 is mapped to Logical Port 2 0011 Physical Port 1 is mapped to Logical Port 3 0100 Physical Port 1 is mapped to Logical Port 4 0101 Physical Port 1 is mapped to Logical Port 5 0110 Physical Port 1 is mapped to Logical Port 6 0111 Physical Port 1 is mapped to Logical Port 7 1000 Reserved will default to 0000 value to 1111 Revision 1 1
77. matically reorder the remaining ports to match the USB host controller s port numbering scheme PortSwap which adds per port programmability to USB differential pair pin locations PortSwap allows direct alignment of USB signals D D to connectors to avoid uneven trace length or crossing of the USB differential signals on the PCB PHYBoost which enables 4 programmable levels of USB signal drive strength in downstream port transceivers PHYBoost attempts to restore USB signal integrity OEM Selectable Features A default configuration is available in each of the SMSC USB251x hub controllers following a reset This configuration may be sufficient for most applications Strapping option pins make it possible to modify a sub set of the configuration options The USB251x hub controllers may be configured by an external EEPROM or a microcontroller When using the microcontroller interface the hub appears as an SMBus slave device If the hub is pin strapped for external EEPROM configuration but no external EEPROM is present then a value of 0 will be written to all configuration data bit fields the hub will attach to the host with all 0 values The USB251x hub family supports OEM selectable features including Optional OEM configuration EEPROM or via the industry standard SMBus interface from an external SMBus host or microcontroller Supports compound devices on a port by port basis Selectable over current sensing and
78. nded to conform to the signaling level designated in the JESD76 2 specification on 1 8 V CMOS Logic XTALOUT should be treated as a no connect 10 3 1 SMBus Interface The SMSC Hub conforms to all voltage power and timing characteristics and specifications as set forth in the SMBus 1 0 specification for Slave Only devices except as noted in Section 8 3 SMBus Slave Interface on page 53 10 3 2 EEPROM Clock frequency is fixed at 60 KHz 20 10 3 3 USB 2 0 The SMSC Hub conforms to all voltage power and timing characteristics and specifications as set forth in the USB 2 0 specification Please refer to the USB 2 0 specification for more information Revision 1 1 04 26 10 70 SMSC USB251x DATASHEET USB 2 0 High Speed 2 Port Hub Controller Datasheet 60 9 9 NAD Uld 9E LL STVNIA3 L Q3SOdX3 OL S3r1ddV 3NCZ ALIHVNY IdOO 1 JHL NIHLIM 0317201 38 LSAW 118 TVNOLLdO 3sv 18 TVNINY3L 30 STIVLAC JHL 0 0 SL O0 N33ML38 SI LI ONY S IVNIAH3 L Qaa v 1d OL 9 SNOISN3WIG NOLLIQNOO IVIYILYN IW IWIXVIA LY 00 SI Q3SOdX3 31 HOV3 30 3O9NVS3 TOL NOILISOd 2 SH3 L3IAFTTIA SNOISN3WIQ L
79. ng levels mandated in Chapter 9 DC Parameters prior to or coincident with the assertion of RESET N 8 7 1 2 RESET N for EEPROM Configuration Start Read Strap Read EERROM Aach USB Reset completion reset Options USB recove Idle request asserted P Set Options Upstream y q ery 4 ee a a a S XS UNS ONS fed I VSS Figure 8 7 Reset N Timing for EEPROM Mode Table 8 9 Reset N Timing for EEPROM Mode NAME DESCRIPTION MIN TYP MAX UNITS t RESET Asserted 1 2 Hub Recovery Stabilization 500 usec t3 EEPROM Read Hub Config 2 0 99 5 msec t4 USB Attach See Note 100 msec Revision 1 1 04 26 10 58 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet Table 8 9 Reset N Timing for EEPROM Mode continued NAME DESCRIPTION MIN TYP MAX UNITS t5 Host acknowledges attach and signals USB 100 msec Reset t6 USB Idle undefined msec t7 Completion time for requests with or without data 5 msec stage Notes When in bus powered mode the hub and its associated circuitry must not consume more than 100 mA from the upstream USB power source during t4 t5 t6 t7 All power supplies must have reached the operating levels mandated in Chapter 9 DC Parameters pr
80. port power control on an individual or ganged basis to match the OEM s choice of circuit board component selection Customizable vendor ID product ID and device ID Configurable delay time for filtering the over current sense inputs Configurable downstream port power on time reported to the host Supports indication of the maximum current that the hub consumes from the USB upstream port Supports Indication of the maximum current required for the hub controller 1 USB2512A 2Ai only uses a single transaction translator Revision 1 1 04 26 10 8 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet SMSC Supports custom string descriptors up to 31 characters Product string Manufacturer string Serial number string When available pin selectable options for default configuration may include Downstream ports as non removable ports Downstream ports as disabled ports Downstream port power control and over current detection on a ganged or individual basis USB signal drive strength USB differential pair pin location For more information please contact your sales representative to obtain a copy of the latest Battery Charging white paper USB251xB xBi products are fully footprint compatible with USB251x xi xA xAi products pin compatible direct drop in replacement use the same PCB components USB IF Compliance by Similarity for ease of use and a complete cost reduction solution
81. pped to Logical Port 1 0010 Physical Port 7 is mapped to Logical Port 2 0011 Physical Port 7 is mapped to Logical Port 3 0100 Physical Port 7 is mapped to Logical Port 4 0101 Physical Port 7 is mapped to Logical Port 5 0110 Physical Port 7 is mapped to Logical Port 6 0111 Physical Port 7 is mapped to Logical Port 7 1000 Reserved will default to 0000 value to 4111 SMSC USB251x 51 Revision 1 1 04 26 10 DATASHEET SMSC USB 2 0 Hi Speed Hub Controller Datasheet 8 2 1 35 Register FFh Status Command BIT NUMBER BIT NAME DESCRIPTION 7 3 Reserved Reserved 2 INTF PW DN SMBus Interface Power Down 0 Interface is active 1 Interface power down after ACK has completed 1 RESET Reset the SMBus Interface and internal memory back to RESET N assertion default settings 0 Normal Run ldle State 1 Force a reset of registers to their default state 0 USB ATTACH USB Attach and write protect 0 SMBus slave interface is active 1 The hub will signal a USB attach event to an upstream device and the internal memory address range is write protected to prevent unintentional data corruption 8 22 EEPROM The 2 EEPROM interface implements a subset of the Master specification Please refer to the Philips Semiconductor Standard 2 specification for details on 12 bus protocols The SMSC hub s 2 EEPROM interface is de
82. r Bus Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7 0 HC_MAX_C_BP Hub Controller Max Current Bus Powered Value in 2 mA increments that the hub consumes from an upstream port VBUS when operating as a bus powered hub This value will include the hub silicon along with the combined power consumption from VBUS of all associated circuitry on the board This value will NOT include the power consumption of a permanently attached peripheral if the hub is configured as a compound device A value of 50 decimal would indicate 100 mA which is the default value Revision 1 1 04 26 10 42 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet 8 2 1 17 Register 10h Power On Time BIT NUMBER BIT NAME DESCRIPTION 7 0 POWER ON TIME Power On Time The length of time that it takes in 2 ms intervals from the time the host initiated power on sequence begins on a port until power is adequate on that port 8 2 1 18 Register 11h Language ID High BIT NUMBER BIT NAME DESCRIPTION 7 0 LANG H USB Language ID Upper 8 bits of a 16 bit ID field 8 2 1 19 Register 12h Language ID Low BIT NUMBER BIT NAME DESCRIPTION 7 0 LANG ID L USB Language ID Lower 8 bits of a 16 bit ID field 8 2 1 20 Register 13h Manufacturer String Length BIT NUMBER BIT NAME DESCRIPTION 7 0 MFR_STR_LEN Manufacturer Str
83. ral Description Datasheet The SMSC USB251x hub family is a group of low power OEM configurable MTT multi transaction translator hub controller IC s with downstream ports for embedded USB solutions The SMSC USB251x hub family is fully compliant with the USB 2 0 specification Each of the SMSC hub controllers can attach to an upstream port as a full speed hub or as a full hi speed hub The SMSC hub controllers support low speed full speed and hi speed if operating as a hi speed hub downstream devices on all of the enabled downstream ports All required resistors on the USB ports are integrated into the hub This includes all series termination resistors on D and pins and all required pull down and pull up resistors D and D pins The over current sense inputs for the downstream facing ports have internal pull up resistors The USB251x hub family includes programmable features such as MultiTRAK Technology which utilizes a dedicated TT per port to maintain consistent full speed data throughput regardless of the number of active downstream connections MultiTRAKTM outperforms conventional USB 2 0 hubs with a single TT in USB full speed data transfers PortMap which provides flexible port mapping and disable sequences The downstream ports of a USB251x hub can be reordered or disabled in any sequence to support multiple platform designs with minimum effort For any port that is disabled the USB251x hub controllers auto
84. rap Example V R kQ Primary Function Strap High 8 6 2 Internal Pull Down IPD pin s strap function is enabled thru hub configuration selection Table 8 1 Hub Configuration Selection and the strap pins driver type is IPD O internal pull down for the Input function use this type of strap option The following figure shows an example of Strap High and Strap Low Use the Strap High configuration to set the strap option value to a 1 Use the Strap Low configuration to set the strap option value to 0 RkO Primary Function Primary Function Strap High Strap Low Figure 8 4 Pin Strap Option with IPD Pin Example 8 6 3 LED Strap Option If a pin s strap function of the LED pins are enabled thru the internal default configuration the driver type of each strap pin is I O no internal pull up or pull down for the input function When the strap pin shares functionality with an LED use this type of strap option The internal logic will drive the LED appropriately active high or low depending on the sampled strap option Figure 8 5 shows an example of Strap High and Strap Low Use the Strap High configuration to set the strap option value to a 1 Use the Strap Low configuration to set the strap option value to 0 R LED Strap High R kQ LED Strap Low Figure 8 5 LED Pin Strap Example Revision 1 1 04 26 10 56 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet
85. rical drive strength High 71296 boost 3 2 BOOST IOUT 6 USB electrical signaling drive strength Boost Bit for Downstream Port 6 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength Medium 8 boost 11 Elevated electrical drive strength High 71296 boost SMSC USB251x 45 Revision 1 1 04 26 10 DATASHEET USB 2 0 Hi Speed Hub Controller SMSC Datasheet BIT NUMBER BIT NAME DESCRIPTION 1 0 BOOST IOUT 5 USB electrical signaling drive strength Boost Bit for Downstream Port 5 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength Medium 8 boost 11 Elevated electrical drive strength High 71296 boost Note Boost could result in non USB Compliant parameters OEM should use 00 value unless specific implementation issues require additional signal boosting to correct for degraded USB signalling levels 8 2 1 29 Register F8h Boost 4 0 BIT NUMBER BIT NAME DESCRIPTION 7 6 BOOST IOUT 4 USB electrical signaling drive strength Boost Bit for Downstream Port 4 00 Normal electrical drive strength No boost 01 Elevated electrical drive strength Low 4 boost 10 Elevated electrical drive strength
86. round Pad Exposed Pad ePad Tied to Ground VSS HS_IND Hi Speed 25 32 42 Upstream Port Indicator LED A N 1 Port LED 37 51 LED A Inaicator 25 49 LED N 3 23 47 LED A 1 13 33 LED A N 5 31 LED A N 6 17 LED A NI7 15 LED B N 1 Enhanced 36 50 Indicator LED B N 2 Port LED 24 48 LED B N 3 22 34 LED B N 4 12 32 LED B N 5 18 LED B N 6 16 LED B N 7 14 LOCAL PWR Local Power 28 39 45 Detection Revision 1 1 04 26 10 18 DATASHEET SMSC USB251x USB 2 0 Hi Speed Hub Controller SMSE Datasheet Table 5 1 Pin List in Alphabetical Order continued PIN NUMBERS 36 QFN 48QFN 64 QFN fos 88 3 op ez SS SS RS 25 SYMBOL NAME 555 55 55 55 53 33 35 55 35 No Connect 6 8 11 NC 7 9 NC 18 11 NC 19 12 NC 8 13 NC 9 27 NC 20 28 NC 21 NON 0 Non 28 39 45 22 29 40 Option OCS N 1 Over Current 13 16 28 OCS 17 20 27 OCS N 3 19 26 22 OCS 14 21 28 21 OCS N 5 35 OCS NI6 38 OCS NIT 37 PLLFILT PLL Regulator 34 46 62 Filter Capacitor PRT DIS M 1 Downstream 1 PRT 015 2 PRT DIS M 3 PRT DIS
87. s DVR PVR Printers and scanners PC media drive bay Portable hub boxes Mobile PC docking Embedded systems Revision 1 1 04 26 10 SMSC ORDER NUMBERS USB2512 AEZG ORDER NUMBERS LEAD FREE ROHS COMPLIANT PACKAGE USB 2 0 Hi Speed Hub Controller PACKAGE SIZE Datasheet TEMPERATURE RANGE 0 to 70 USB2512A AEZG USB2513 AEZG USB2514 AEZG USB2512B AEZG 0 to 85 USB2513B AEZG USB2514B AEZG 6x 6x 0 5 mm USB2512i AEZG 40 C to 85 USB2512Ai AEZG USB2512Bi AEZG USB2513i AEZG USB2513Bi AEZG USB2514i AEZG USB2514Bi AEZG USB2513 HZH 0 to 70 USB2514 HZH 7x7x0 5 mm USB2513i HZH 40 to 85 USB2514i HZH 0 to 70 USB2517 JZX 9 9 0 5 mm USB2517i JZX 40 to 85 THIS PRODUCT MEETS THE HALOGEN MAXIMUM CONCENTRATION VALUES PER 1 61249 2 21 FOR ROHS COMPLIANCE AND ENVIRONMENTAL INFORMATION PLEASE VISIT WWW SMSC COM ROHS SMSE 80 ARKAY DRIVE HAUPPAUGE NY 11788 631 435 6000 FAX 631 273 3123 Copyright 2010 SMSC or its subsidiaries rights reserved Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications Consequently complete information sufficient for construction purposes is not necessarily given Although the information has been checked and is believed to be accurate no responsibility is assumed for inaccur
88. s mapped to Logical Port 7 1000 Reserved will default to 0000 value to 1111 Revision 1 1 04 26 10 50 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet 8 2 1 34 Register FEh PortMap 7 BIT NUMBER BIT NAME DESCRIPTION 7 0 PRTR7 PortMap register for port 7 When a hub is enumerated by a USB host controller the hub is only permitted to report how many ports it has the hub is not permitted to select a numerical range or assignment The host controller will number the downstream ports of the hub starting with the number 1 up to the number of ports that the hub reported having The host s port number is referred to as Logical Port Number and the physical port on the hub is the Physical Port Number When mapping mode is enabled see PRTMAP EN in Register 08h Configuration Data Byte 3 the hub s downstream port numbers can be mapped to different logical port numbers assigned by the host Note OEM must ensure that contiguous logical port numbers are used starting from 1 up to the maximum number of enabled ports this ensures that the hub s ports are numbered in accordance with the way a host will communicate with the ports Table 8 6 PortMap Register for Port 7 Bit 7 4 0000 Reserved to 41117 3 0 0000 Physical Port 7 is Disabled 0001 Physical Port 7 is ma
89. signed to attach to a single dedicated 12 EEPROM and it conforms to the Standard mode IC specification 100 kbit s transfer rate and 7 bit addressing for protocol and electrical compatibility Note Extensions to the specification are not supported The hub acts as the master and generates the serial clock SCL controls the bus access determines which device acts as the transmitter and which device acts as the receiver and generates the START and STOP conditions 8 2 2 1 Implementation Characteristics The hub will only access an EEPROM using the sequential read protocol 8 2 2 2 Pull Up Resistor The circuit board designer is required to place external pull up resistors 10 recommended on the SDA SMBDATA and SCL SMBCLK SEL 0 lines per SMBus 1 0 specification and EEPROM manufacturer guidelines to VDD33 in order to assure proper operation 8 2 2 3 EEPROM Slave Address The slave address is 1010000 Note 10 bit addressing is NOT supported 8 2 3 In Circuit EEPROM Programming The EEPROM can be programmed via ATE automatic test equipment by pulling RESET N low which tri states the hub s EEPROM interface and allows an external source to program the Revision 1 1 04 26 10 52 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet 8 3 SMBus Slave Interface Instead of loading User Defined Descriptor data from an external EEPROM the SMSC hub can be configured to re
90. t 1 is non removable and the LED is active low NON REN 1 0 10 Ports 1 amp 2 non removable and the LED is active high NON REM 1 0 11 When available ports 1 2 amp are non removable and the LED is active low TEST IPD TEST pin User must treat as a no connect pin or connect to ground No trace or signal should be routed or attached to this pin Revision 1 1 04 26 10 26 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller P SMSC Datasheet Table 5 2 USB251x Pin Descriptions continued BUFFER SYMBOL TYPE DESCRIPTION SEL48 48 MHz Clock Input Selection 48 MHz external input clock select When the hub is clocked from an external clock source this pin selects either 24 MHz or 48 MHz mode 24 MHz T 48 MHz POWER GROUND and NO CONNECTS CRFILT VDD Core Regulator Filter Capacitor ur pin must have 1 0 uF or greater 20 ESR 0 1 Q capacitor to VDD33 3 3 V Power PLLFILT PLL Regulator Filter Capacitor d pin must have 1 0 uF or greater 20 ESR 0 1 capacitor to VSS Ground Pad ePad The package slug is the only VSS for the device and must be tied to ground with multiple vias NC No Connect No signal or trace should be routed or attached to these pins 5 3 Buffer Type Descriptions Table 5 3 Buffer Type Descriptions BUFFER DESCRIPTION Input Input Output IPD Input with internal weak pull
91. t 7 Bit 6 Controls Port 6 Bit 5 Controls Port 5 Bit 4 Controls Port 4 Bit 3 Controls Port 3 Bit 2 Controls Port 2 Bit 12 Controls Port 1 Bit 02 Reserved Revision 1 1 04 26 10 40 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller Datasheet 8 2 1 11 smsc Register 0Ah Port Disable For Self Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7 0 PORT DIS SP Port Disable Self Powered Disables 1 or more ports 0 Port is available 1 Port is disabled During self powered operation when mapping mode is disabled PRTMAP 107 this selects the ports which will be permanently disabled and are not available to be enabled or enumerated by a host controller The ports can be disabled in any order the internal logic will automatically report the correct number of enabled ports to the USB host and will reorder the active ports in order to ensure proper function When using the internal default option the DIS P x 1 and DIS M x 1 pins will disable the appropriate ports Bit 7 Controls Port 7 Bit 6 Controls Port 6 Bit 5 Controls Port 5 Bit 4 Controls Port 4 Bit 3 Controls Port 3 Bit 2 Controls Port 2 Bit 1 Controls Port 1 Bit 0 Reserved always 0 8 2 1 12 Register OBh Port Disable For Bus Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7 0 PORT DIS BP Port Disable Bus Powered Disables 1 or mor
92. ub to send EOP if no downstream traffic is detected at EOF1 See Section 11 3 1 of the USB 2 0 specification for additional details 4 EOP generation is normal EOP generation is disabled Revision 1 1 04 26 10 38 SMSC USB251x DATASHEET USB 2 0 Hi Speed Hub Controller smsc Datasheet BIT NUMBER BIT NAME DESCRIPTION 2 1 CURRENT SNS Over Current Sense Selects current sensing on a port by port basis all ports ganged or none only for bus powered hubs The ability to support current sensing on a port or ganged basis is hardware implementation dependent 00 Ganged sensing all ports together 01 Individual port by port Over current sensing not supported must only be used with bus powered configurations 0 PORT PWR Port Power Switching Enables power switching on all ports simultaneously ganged or port power is individually switched on and off on a port by port basis individual The ability to support power enabling on a port or ganged basis is hardware implementation dependent 0 Ganged switching all ports together T Individual port by port switching 8 2 1 8 Register 07h Configuration Data Byte 2 BIT NUMBER BIT NAME DESCRIPTION 7 DYNAMIC Dynamic Power Enable Controls the ability of the hub to automatically change from self powered operation to bus powered operation if the local power source is removed or is unavailable
93. vel driving strength resolution 1 USB2512A Ai only uses a single transaction translator SMSC USB251x Hub Family DATASHEET Features USB251xB xBi products are fully footprint compatible with USB251x xi xA xAi products as direct drop in replacements Cost savings include using the same PCB components and application of USB IF Compliance by Similarity Full power management with individual or ganged power control of each downstream port Fully integrated USB termination and pull up pull down resistors Supports a single external 3 3 V supply source internal regulators provide 1 2 V or 1 8 V internal core voltage Onboard 24 MHz crystal driver ceramic resonator or external 24 48 MHz clock input Customizable vendor ID product ID and device ID 4 kilovolts of HBM JESD22 A114F ESD protection powered and unpowered Supports self or bus powered operation USB251xB and USB251xBi products support the USB Battery Charging specification Rev 1 1 for Charging Downstream Ports CDP Lead free RoHS compliant packages 36 QFN 6x6 48 QFN 7x7 64 pin QFN 9x9 mm USB251xi USB2512Ai and USB251xBi products support the industrial temperature range of 40 to 85 USB251xB products support the extended commercial temperature range of 0 C to 85 C Applications LCD monitors and TVs Multi function USB peripherals PC motherboards Set top boxes DVD player
94. vidual over current sensing 0 1 Configured as an SMBus slave for external download of user defined descriptors Strap options disabled All settings are controlled by registers as set by the user 1 0 Internal Default Configuration Strap options enabled Bus powered operation LED mode USB when available on package Individual power switching Individual over current sensing 1 1 2 Wire EEPROMS are supported Strap options disabled All settings are controlled by registers as set by the user SMSC USB251x 33 Revision 1 1 04 26 10 DATASHEET SMSC USB 2 0 Hi Speed Hub Controller Datasheet Table 8 1 Hub Configuration Options continued CFG SEL 2 SEL 1 SEL O0 DESCRIPTION 1 0 0 Internal Default Configuration with the following over rides Dynamic power switching enabled Strap options disabled LED mode Speed when available on package Individual power switching Individual over current sensing Internal Default Configuration with the following over rides Dynamic power switching enabled Strap options disabled LED mode USB when available on package Individual power switching Individual over current sensing Internal Default Configuration with the following over rides Strap options disabled LED mode Speed when available on package Individual power switching Individual over current sensin

USB251x USB 2.0 Hi-Speed Hub Controller Data Sheet - Digi-Key

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