N. onfiguring the US0 via SMus Preface udience Overview This application note provides information on configuring the US0 -port US.0 HU with an external SMus master. This application note assumes that the reader is familiar with hardware design, US protocols and US Hubs. The goal of the application note is to provide information on configuring the US0 with an external SMus master. When the default configuration with strapping options for US0 is not sufficient to define a specific implementation, additional configuration information must be provided by an external source. This application note describes the use of an external SMus master as the source of the additional configuration information. onfiguration hoices SMus The US0 supports several OEM selectable features. onfiguration choices are self-powered hub, bus-powered hub, or a dynamically switching between self and bus-power. When a down stream port will be permanently attached to a US device, the US0 supports configuration as a compound device. The US0 may be configured by an external EEPROM or SMus master when the default configuration with strapping options is not sufficient. For example, when the Vendor I and/or Product I must be changed from the default, then an external configuration source is required. This application note describes the use of an external SMus master.. Selection of External SMus onfiguration Three configuration pins on US0 are sampled following hardware reset to determine the external configuration source and the SMus address. This usually happens when power is initially turned on. The pin FG_SEL can be either low or high at the end of reset while pin FG_SEL must be low at the end of reset to select SMus as the source of configuration information. The pin FG_SEL0 determines the SMus slave address. The address is 0000 (binary) when low at the end of reset, and 000 (binary) when high. SMS N. PPLITION NOTE Revision 0. (09--0)
onfiguring the US0 via SMus. SMus onfiguration Process The US0 is ready to accept SMus Read yte or Write yte commands following hardware reset. The SMus register space for US0 is located from 0 to 0 (hex). There is no particular order the configuration registers are required to be loaded. It isn t until the command register is loaded that the entire register space is changed to active configuration. Registers can be read to verify that correct values have been loaded. The final step of loading is to write to the command register at address 0... SMus onfiguration Step by Step. End of hardware reset - RESET_N goes high US0 is ready to accept SMus commands 00us after RESET_N goes high.. Load registers from to 0 (hex) by SMus command write.. Optionally read back registers through 0 (hex) to verify correct value. This is not a required step.. Write to command register at location 0 the command US_TTH. The byte value is 0 (hex). The US0 will not attach even if VUS_ET is asserted until the US_TTH command has been sent to the command register. Once the US_TTH command has been received the SMus slave is powered off and will not respond to any further SMus commands. RESET_N must be pulsed low to reactivate SMus again.. SMus Register onfiguration Space n overview of the SMus register space is shown in Table., "SMus Register ddress Layout". Table. SMus Register ddress Layout YTE LOTION REGISTER ESRIPTION 0 Status/ommand Status and ommand register Vendor I LS Vendor I is assigned by US-IF Vendor I MS Product I LS Product I is assigned by manufacturer Product I MS evice I LS evice I is assigned by manufacturer evice I MS 7 onfig ata yte onfiguration ata byte for hub controller options 8 onfig ata yte onfiguration ata byte for hub controller options 9 Non-removable downstream devices efines ports with permanently attached devices if any. The hub must be configured as a compound device if one or more devices are permanently attached to the hubs downstream ports Ports isabled in Self Power mode Ports isabled in us Power Mode Max Power in Self Power mode Max Power in us Power mode Selects if ports through are disabled in self power mode. Selects if ports through are disabled in bus power mode efines maximum current drawn from VUS in selfpowered mode in increments of m.. efines maximum current drawn from VUS in buspowered mode in increments of m. Revision 0. (09--0) SMS N. PPLITION NOTE
onfiguring the US0 via SMus Table. SMus Register ddress Layout (continued) YTE LOTION REGISTER ESRIPTION E F Hub ontroller Max urrent in Self Power mode Hub ontroller Max urrent in us Power mode efines maximum current drawn from VUS in selfpowered mode by US0 itself efines maximum current drawn from VUS in buspowered mode by US0 itself 0 Power-On Time Time until power is stable on down stream ports after port power is enabled in increments of ms... SMus Status and ommand Register The SMus Status and ommand register is the last register to be loaded after all the other registers have been loaded. US0 will not attach to the upstream US port until the US_TTH command is sent and VUS_ET is asserted. Table. Status and ommand Fields IT NUMER IT NME ESRIPTION 7: Reserved Reserved must be 00000 RESET Reset the SMus registers to default setting: 0 = Normal Run/Idle State = Force a reset of SMus registers Write_Prot Write protect registers through 0: 0 = o not write protect SMus registers = Write-protect SMus registers through 0. This bit is write once and is only cleared by asserting RESET_N 0 US_TTH ttach to US and power down SMus interface: 0 = efault: SMus slave interface is active = Signals HU to attach to upstream port when VUS_ET is active. SMus interface will power down after the K has completed. This bit is write once and is only cleared by asserting RESET_N.. SMus Register VI/PI/I Each manufacturer is assigned a Vendor I (VI) by US-IF. For example SMS is assigned 0 as VI. The least significant byte value is mapped to SMus location and the most significant byte value 0 is mapped to SMus location. The manufacturer determines Product and evice I. Most and least significant bytes are mapped in SMus similar to VI with MS on even locations and LS on odd locations. SMS N. Revision 0. (09--0) PPLITION NOTE
onfiguring the US0 via SMus.. SMus Register onfig ata yte This configuration byte selects hub specific implementation dependent functions. Table. onfig ata yte Fields IT NUMER IT NME ESRIPTION 7 SELF_US_PWR Selects between Self- and us-powered operations. 0 = us-powered operation. = Self-powered operation. PORT_IN Port indicator support: Indicates if LE indicators are implemented. 0 = No LE indicators. = LE indicators (green and yellow). HS_ISLE High Speed disable: Forces hub to attach as Full-speed only even if the upstream port is high speed capable. 0 = High-/Full-Speed. = Full-Speed only. MTT_ENLE Enable Multiple Transaction Translators. 0 = Single Transaction Translator = Multiple Transaction Translators (one TT per port). Recommended EOP_ISLE EOP isable: isable EOP generation at EOF when no downstream directed traffic is in progress. 0 = EOP generation at EOF is enabled. = EOP generation at EOF is disabled. : URRENT_SNS Over-current sense: Indicates over-current sensing configuration. 00 = Ganged sensing. 0 = Individual port-by-port. 0 = Over-current not supported or reported. = Over-current not supported or reported. 0 PORT_PWR Port power switching: Indicates whether port power switching is on portby-port basis or ganged. 0 = Ganged switching. = Individual port-by-port switching. SELF_US_PWR HS_ISLE MTT_ENLE The US0 can operate as either bus- or self-powered. This bit determines which fields to select for descriptor information regarding enabled/disabled ports and reported power consumption. This bit allows the hub to be configured for full-speed operation. In most implementations the preferred choice is to keep this set to 0 thus enabling high-speed operation. In the event the host is full-speed the US0 will as a high-speed device negotiate transfer speed and settle for full-speed as required by US-IF specification. It is therefore not necessary to set HS_ISLE even if the hub never will be connected to a high-speed host. SMS recommends this bit to be set to 0. This bit enables Multiple Transaction Translators, one TT per down-stream port for maximum performance on low-speed and full-speed devices. When disabled only one transaction translator is enabled and it is shared with all down-stream ports. Revision 0. (09--0) SMS N. PPLITION NOTE
onfiguring the US0 via SMus EOP_ISLE URRENT_SNS PORT_PWR This bit enables EOP to be generated at EOF when no downstream traffic is in progress. SMS recommends this bit to be set to to disable EOP at EOF. This field indicates if over-current sense is available or not. self-powered hub must have over-current sensing and protection. The US0 has one over-current sense input pin per port OS[:0]_N. In ganged over-current sense configuration only one of the OS_N pins is required to tie to the over current detector. For individual over-current sense each port has a dedicated over-current sense pin typically connected to the FLG output on the US port power controller. Over-current sensing is not required in bus-powered mode. The US0 can be configured without over-current sense. For bus-powered hubs the upstream hub or host is responsible for over-current sensing. This field indicates if port power is controlled individually port-by-port or ganged. For bus-powered applications port power control is required. Port power control is not required for self-powered implementations. If no port power control is used the PORT_PWR field should be set to 0 (i.e. ganged mode) and the Power on time field should be set to 0... SMus Register onfig ata yte This configuration byte selects hub specific implementation dependent functions. Table. onfig ata yte Fields IT NUMER IT NME ESRIPTION 7 YNMI ynamic auto-switching Enable. 0 = ynamic auto-switching disabled. = ynamic auto-switching enabled. Reserved Reserved must be 0. : O_TIMER Over-current Timer: Over-current Timer delay. 00 = 0.ms. 0 = ms. 0 = ms. = ms. OMPOUN ompound evice: esignates if Hub is part of a compound device. 0 = Hub is not part of compound device. = Hub is part of a compound device. :0 Reserved Reserved must be 000. YNMI US0 supports a dynamic auto-switching mode, switching between bus- or self-powered. In implementations that incorporate circuitry to switch between power from an external supply when available or from VUS when the external supply is disconnected, it is possible to configure US0 to dynamically switch configuration. This feature is enabled when the field YNMI is set to. When YNMI auto-switching is enabled the SELF_US_PWR bit in onfig ata yte is ignored. Instead the state of pin SELF_PWR determines the power mode. SMS N. Revision 0. (09--0) PPLITION NOTE
onfiguring the US0 via SMus The US0 senses changes to the state of pin SELF_PWR when dynamic auto-switching is enabled. When SELF_PWR changes from high to low the US0 detaches from the upstream port and when re-enumerated by the host it will report that it is bus-powered and will use the bus-powered configuration from the SMus registers for descriptor information. On the other hand when SELF_PWR changes from low to high the US0 detaches from the upstream port and when re-enumerated by the host it will report as self-powered and will use the self-powered configuration from the SMus registers for descriptor information. For example it is possible to implement a HU that supports four downstream ports in self-powered mode while in bus-powered mode there are only two downstream ports available. Note, however that exposed US port connectors are required to be active at all times by US-IF. O_TIMER OMPOUN dditional delay from an over-current event generated from over-current sense circuit is selected in this field. If the over-current sense circuit trips for short surges when a device is first plugged in this delay can be increased from 0.ms to at most ms. uring the O_TIMER delay if the over-current event disappears nothing will be posted to the hub controller and port power is not removed. The most common value for this field is 0 equivalent to ms delay. This field must be set depending on the setting of the non-removable field. If one or more nonremovable devices are attached to downstream ports this field must be set to otherwise it should be set to 0... SMus Register Non-Removable evices Indicates which port or ports have non-removable devices. non-removable device is permanently attached to the hub and cannot be disconnected. nother device cannot replace the non-removable device on that port. Table. Non-Removable evice Fields IT NUMER IT NME ESRIPTION 7: Reserved Reserved must be 000. Port non-removable 0 = Port has no permanently attached device. = Port has a non-removable device attached. Port non-removable 0 = Port has no permanently attached device. = Port has a non-removable device attached. Port non-removable 0 = Port has no permanently attached device. = Port has a non-removable device attached. Port non-removable 0 = Port has no permanently attached device. = Port has a non-removable device attached. 0 Reserved Reserved must be 0... SMus Register Port isable when Self-Powered This configuration byte is in effect if the hub is operating as self-powered. ownstream ports can be permanently disabled on the hub. The first disabled port must be the highest numbered port and each additional disabled port must the next lower port number. For example if only ports are required. Port must be disabled. If two ports are disabled port and port must be disabled. Revision 0. (09--0) SMS N. PPLITION NOTE
onfiguring the US0 via SMus Table. Port isable for self-powered operation Fields IT NUMER IT NME ESRIPTION 7: Reserved Reserved must be 000. Port disabled 0 = Port is available. = Port is disabled. Port disabled 0 = Port is available. = Port is disabled. Port disabled 0 = Port is available. = Port is disabled. Port disabled 0 = Port is available. = Port is disabled NOT a valid choice (implies a HU with no downstream ports). 0 Reserved Reserved must be 0...7 SMus Register Port isable when us-powered This configuration byte is in effect if the hub is operating in bus-powered mode. ownstream ports can be permanently disabled on the hub. The first disabled port must be the highest numbered port and each additional disabled port must be the next lower port number. For example if only ports are required. Port must be disabled. If two ports are disabled port and port must be disabled. Table.7 Port isable for us-powered Operation Fields IT NUMER IT NME ESRIPTION 7: Reserved Reserved must be 000. Port disabled 0 = Port is available. = Port is disabled. Port disabled 0 = Port is available. = Port is disabled. Port disabled 0 = Port is available. = Port is disabled. Port disabled 0 = Port is available. = Port is disabled NOT a valid choice (implies a HU with no downstream ports). 0 Reserved Reserved must be 0...8 SMus Register Max Power onsumption when Self- or us-powered The current consumed on VUS by the hub or hub combo is indicated for self- and bus-powered mode. The field value is in increments of m. The maximum allowed current consumption for selfpowered devices is 00m or (hex). bus-powered device is allowed to consume up to 00m. hub must allocate 00m for each downstream port when it is bus powered. The most common values for self-powered configuration is 0 or indicating no current draw or up to m leakage on VUS. For a bus-powered hub with removable ports the maximum value is 00m or 9 (hex). For a hub with a single removable port the maximum value is 00m or 8 (hex). Note SMS N. 7 Revision 0. (09--0) PPLITION NOTE
onfiguring the US0 via SMus that for bus-powered hubs the reported power consumption can include non-removable devices if the non-removable devices report as having zero power and self-powered...9 SMus Register Hub ontroller Max urrent when Self- or us-powered The current consumed on VUS by the hub proper in this case US0 is reported in both self- and bus-powered modes. The value is in increments of m. For compound devices this value excludes power consumed by any non-removable devices. For self-powered mode the most common value is 0 or indicating no or up to m leakage current on VUS. For bus-powered mode the US0 can consume up to 70m when both downstream ports are active in high-speed. The hub controller portion is therefore 70m/m = 8 or (hex)...0 SMus Register Power-On Time This field indicates the amount of time down stream port power is stable after a set port power command. The value is in increments of ms. The most common value is 00ms (hex). This value is compatible with most if not all dedicated US port-power switch circuits on the market. If a custom circuit is used this value could be smaller or larger depending on voltage ramp time, loading and decoupling capacitance on the port. There are two special cases one for self-powered and one for bus-powered. SELF-POWERE NO PORT POWER SWITH US-POWERE When a hub is in self-powered mode it must allot 00m for each available downstream port. selfpowered hub must have over-current sense circuitry, but port power switching is not required. If the implementation uses a poly-fuse for over-current sensing, directly connected to the power supply the value in the field Power-On Time must be 0. us-powered mode requires a port power switch. The reason for this requirement is that every US device must limit current consumption to 00m before it is enumerated. In the case of hubs the only way to guarantee this in the bus-powered case is to turn off the port power to downstream ports. Examples of onfigurations Four examples of configurations are shown in table 8. The examples illustrate self powered implementations with port power controller or without power switch but using poly-fuse for over-current sense, dynamic auto-switching and compound device. ppendix shows schematics for each example. The designs illustrate different uses of the US0. They are not complete designs for production use.. Example : US0 as a Full Featured Hub Self-powered Four downstream Ports Port power switching Individual Port over-current sense Individual LE indicators. Example : US0 as a Low ost Hub Self-powered Four downstream Ports Port power switching none Port over-current sense ganged with poly-fuse Revision 0. (09--0) 8 SMS N. PPLITION NOTE
onfiguring the US0 via SMus No LE indicators reported Green LEs for each port active status Single mber LE for over-current notification. Example : US0 as a ynamic uto-switching Hub Self-powered/us-powered dynamically switching Four downstream ports when self-powered Two downstream ports when bus-powered Port power switching Individual Port over-current sense Individual No LE indicators. Example : US0 as a ompound evice with Two Non- Removable evices Self-powered Four downstream Ports (Two removable port and port ) Two non-removable devices (port and port ) Port power switching Individual Port over-current sense Individual LE indicators Ports and are disabled if bus-powered (yte 0). Table. Examples of ifferent onfigurations YTE LOTION FIEL EXMPLE EXMPLE EXMPLE EXMPLE : Vendor I 0 0 0 0 : Product I 0 0 0 0 : evice I 0 0 7 onfig ata yte 98 9 9 8 onfig ata yte 0 0 90 8 9 Non-removable downstream devices 00 00 00 0 E F Ports isabled in Self Power mode Ports isabled in us Power Mode Max Power in Self Power mode Max Power in us Power mode Hub ontroller Max urrent in Self Power mode Hub ontroller Max urrent in us Power mode 00 00 00 00 00 00 0 0 00 00 00 00 F 00 00 00 00 0 Power-On Time 00 SMS N. 9 Revision 0. (09--0) PPLITION NOTE
Revision 0. (09--0) 0 SMS N. PPLITION NOTE 7 ppendix High: SMus Slave ddress :000 Low: SMus Slave ddress :0000 J +.0V R8 00K 8.0uF V U PQLMZP IN OUT SHn NR GN nreset LKIN_EN pf pf 0.0uF R 0K XTL XTL 7 0uF Y.000MHz 0ppm R9 Meg VUS_ET U US0 Upstream USP0 VUS_ET USN0 0 8 9 7 0 9 8 7 8 8 7 OS_N OS_N OS_N OS_N RESET_N SELF_PWR LKIN_EN FG_SEL0 FG_SEL FG_SEL TEST0 TEST N N N N N XTL/LKIN XTL ownstream USP USN PRTPWR GR/NON_REM0 USP USN PRTPWR USP USN PRTPWR USP USN PRTPWR 7 M/GNG_EN ownstream GR/NON_REM GR/PRT_IS0 GR/PRT_IS 8 9 M/MTT_IS ownstream ownstream M 9 7 0 M/LE_EN 9 EEPROM S/SMT SL/SMLK ommon PRTPWR_POL TEST/REG_EN RIS V8 V8 V8 V8PLL VPLL V 0 0 8 V V 7 V VSS VSS 0 VSS VSS 9 VSS VSS VSS VSS R.0K % V GR M GR M GR M GR M S SL USP0 USN0 USP USN LE USP USN LE USP USN LE USP USN LE7 V8 V8 9 LE LE LE LE8 R 0.7uF R R R8 R R7 R0 R9 0.7uF PRTPWR PRTPWR PRTPWR PRTPWR nos nos nos nos Figure 7. US0 Full Feature Hub R 0K +.0V 7 7.7uF U MI0-M EN EN IN GN U MI0-M EN EN IN GN OUT 8 OUT FLG FLG OUT 8 OUT FLG FLG R R7 00K R 0K 00K 7 PWR PWR + 0uF 0V PWR PWR + 0uF 0V.0uF V + 0uF 0V + 7 0uF 0V 9.7uF VUS on Upstream Port 0 USP0 USN0 VUS Power Port USP USN VUS Power Port USP USN VUS Power Port USP USN VUS Power Port USP USN To SMus Master ata To SMus Master lock 000 N. Mopac Expressway Stonelake uilding, Suite 00 ustin, TX 7879-8.0.0070 Title Example : US0 Full Feature Hub Size ocument Number Rev N. example ate: Thursday, ugust 7, 00 Sheet of onfiguring the US0 via SMus
Revision 0. (09--0) SMS N. PPLITION NOTE High: SMus Slave ddress :000 Low: SMus Slave ddress :0000 J +.0V R8 00K 8.0uF V U PQLMZP IN OUT SHn NR GN nreset LKIN_EN pf pf 0.0uF R 0K XTL XTL 7 0uF Y.000MHz 0ppm R9 Meg VUS_ET U US0 Upstream USP0 VUS_ET USN0 0 8 9 7 0 9 8 7 8 8 7 OS_N OS_N OS_N OS_N RESET_N SELF_PWR LKIN_EN FG_SEL0 FG_SEL FG_SEL TEST0 TEST N N N N N XTL/LKIN XTL ownstream USP USN PRTPWR GR/NON_REM0 USP USN PRTPWR GR/NON_REM USP USN PRTPWR GR/PRT_IS0 USP USN PRTPWR GR/PRT_IS 7 M/GNG_EN ownstream 8 9 M/MTT_IS ownstream ownstream EEPROM M 9 7 0 M/LE_EN 9 S/SMT SL/SMLK ommon PRTPWR_POL TEST/REG_EN RIS V8 V8 V8 V8PLL VPLL V 0 0 8 V V 7 V VSS VSS 0 VSS VSS 9 VSS VSS VSS VSS R.0K % V GR GR GR GR M S SL USP0 USN0 USP USN USP USN USP USN USP USN LE7 V8 V8 9 LE LE LE LE8 0.7uF R R R7 R0 R9 0.7uF Figure 7. US0 Low ost Hub R 0K.7uF R7 00K R 00K +V nos R 0K F.0 - Polyswitch.0uF V 7 R 70 9.7uF + 8 uf 0V R K VUS on Upstream Port 0 USP0 USN0 VUS Power Port USP USN VUS Power Port USP USN VUS Power Port USP USN VUS Power Port USP USN To SMus Master ata To SMus Master lock 000 N. Mopac Expressway Stonelake uilding, Suite 00 ustin, TX 7879-8.0.0070 Title Example : US0 low cost hub Size ocument Number Rev N. example ate: Thursday, ugust 7, 00 Sheet of onfiguring the US0 via SMus
Revision 0. (09--0) SMS N. PPLITION NOTE J +.0V High: SMus Slave ddress :000 Low: SMus Slave ddress :0000 8.0uF V R K R 00K U PQLMZP IN OUT SHn NR GN 0-0.0uF R8 00K Q IRFL90 7 0uF +.0V nreset LKIN_EN pf pf R 0K XTL Y.000MHz 0ppm XTL R9 Meg 0 8 9 7 0 9 8 7 8 8 7 U US0 VUS_ET OS_N OS_N OS_N OS_N RESET_N SELF_PWR LKIN_EN PRTPWR_POL TEST/REG_EN FG_SEL0 FG_SEL FG_SEL TEST0 TEST N N N N N XTL/LKIN XTL Upstream ownstream USP0 USN0 USP USN PRTPWR GR/NON_REM0 USP USN PRTPWR GR/NON_REM USP USN PRTPWR GR/PRT_IS0 USP USN PRTPWR GR/PRT_IS VUS_ET 7 M/GNG_EN ownstream 8 9 M/MTT_IS ownstream ownstream M 9 7 0 M/LE_EN 9 EEPROM S/SMT SL/SMLK ommon RIS V8 V8 V8 V8PLL VPLL V 0 0 8 V V 7 V VSS VSS 0 VSS VSS 9 VSS VSS VSS VSS R.0K % V GR M GR M GR M GR M S SL USP0 USN0 USP USN LE USP USN LE USP USN LE USP USN LE7 V8 V8 9 LE LE LE LE8 R R R R8 R9 0 0uF R7 R0 R R R7 00K Figure 7. US0 ynamic uto-switching 00K 0.7uF PRTPWR PRTPWR PRTPWR PRTPWR.0uF V R 0K +.0V 7 7.7uF U MI0-M EN EN IN GN U MI0-M EN EN IN GN nos nos nos nos OUT 8 OUT FLG FLG OUT 8 OUT FLG FLG R 0K 7 PWR PWR + 0uF 0V PWR PWR + 0uF 0V + 0uF 0V + 7 0uF 0V 9.7uF VUS on Upstream Port 0 USP0 USN0 VUS Power Port USP USN VUS Power Port USP USN VUS Power Port USP USN VUS Power Port USP USN To SMus Master ata To SMus Master lock 000 N. Mopac Expressway Stonelake uilding, Suite 00 ustin, TX 7879-8.0.0070 Title Example : US0 ynamic auto-switching Size ocument Number Rev N. example ate: Thursday, ugust 7, 00 Sheet of onfiguring the US0 via SMus
Revision 0. (09--0) SMS N. PPLITION NOTE High: SMus Slave ddress :000 Low: SMus Slave ddress :0000 J +.0V R8 00K 8.0uF V U PQLMZP IN OUT SHn NR GN nreset LKIN_EN pf pf 0.0uF R 0K XTL XTL 7 0uF Y.000MHz 0ppm R9 Meg VUS_ET U US0 Upstream USP0 VUS_ET USN0 0 8 9 7 0 9 8 7 8 8 7 OS_N OS_N OS_N OS_N RESET_N SELF_PWR LKIN_EN FG_SEL0 FG_SEL FG_SEL TEST0 TEST N N N N N XTL/LKIN XTL ownstream USP USN PRTPWR GR/NON_REM0 USP USN PRTPWR GR/NON_REM USP USN PRTPWR GR/PRT_IS0 USP USN PRTPWR GR/PRT_IS 7 M/GNG_EN ownstream PRTPWR_POL TEST/REG_EN 8 9 M/MTT_IS ownstream ownstream EEPROM M 9 7 0 M/LE_EN 9 S/SMT SL/SMLK ommon RIS V8 V8 V8 V8PLL VPLL V 0 0 8 V V 7 V VSS VSS 0 VSS VSS 9 VSS VSS VSS VSS R.0K % V GR M GR M S SL USP0 USN0 PRTPWR USP USN PRTPWR USP USN USP USN LE USP USN LE7 V8 V8 9 LE LE8 0.7uF R7 R8 R0 R9 Figure 7. US0 ompound Hub 0.7uF PRTPWR PRTPWR R 0K +.0V 7.7uF U MI0-M EN EN IN GN nos nos OUT 8 OUT FLG FLG R 00K R7 00K R 0K PWR PWR + + 7 0uF 0uF 0V 0V.0uF V 7 9.7uF VUS on Upstream Port 0 USP0 USN0 VUS etect to non-removable device USP USN VUS etect to non-removable device USP USN VUS Power Port USP USN VUS Power Port USP USN To SMus Master ata To SMus Master lock Title Example : US0 ompound Hub Thursday, ugust 7, 00 ate: Sheet of Port and port connected to two non-removable devices. Port and port are removable ports and connects to US connectors. 000 N. Mopac Expressway Stonelake uilding, Suite 00 ustin, TX 7879-8.0.0070 Size ocument Number Rev N. example onfiguring the US0 via SMus
80 rkay rive Hauppauge, NY 788 () -000 FX () 7- opyright 00 SMS or its subsidiaries. ll rights reserved. ircuit diagrams and other information relating to SMS products are included as a means of illustrating typical applications. onsequently, complete information sufficient for construction purposes is not necessarily given. lthough the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMS reserves the right to make changes to specifications and product descriptions at any time without notice. ontact your local SMS 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 SMS or others. ll sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMS's standard Terms of Sale greement dated before the date of your order (the "Terms of Sale greement"). The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. nomaly sheets are available upon request. SMS 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. ny and all such uses without prior written approval of an Officer of SMS and further testing and/or modification will be fully at the risk of the customer. opies of this document or other SMS literature, as well as the Terms of Sale greement, may be obtained by visiting SMS s website at http://www.smsc.com. SMS is a registered trademark of Standard Microsystems orporation ( SMS ). Product names and company names are the trademarks of their respective holders. SMS ISLIMS N EXLUES NY N LL WRRNTIES, INLUING WITHOUT LIMITTION NY N LL IMPLIE WRRNTIES OF MERHNTILITY, FITNESS FOR PRTIULR PURPOSE, TITLE, N GINST INFRINGEMENT N THE LIKE, N NY N LL WRRNTIES RISING FROM NY OURSE OF ELING OR USGE OF TRE. IN NO EVENT SHLL SMS E LILE FOR NY IRET, INIENTL, INIRET, SPEIL, PUNITIVE, OR ONSEQUENTIL MGES; OR FOR LOST T, PROFITS, SVINGS OR REVENUES OF NY KIN; REGRLESS OF THE FORM OF TION, WHETHER SE ON ONTRT; TORT; NEGLIGENE OF SMS OR OTHERS; STRIT LIILITY; REH OF WRRNTY; OR OTHERWISE; WHETHER OR NOT NY REMEY OF UYER IS HEL TO HVE FILE OF ITS ESSENTIL PURPOSE, N WHETHER OR NOT SMS HS EEN VISE OF THE POSSIILITY OF SUH MGES. Revision 0. (09--0) SMS N. PPLITION NOTE