USB2512/12A/12B USB2513/13B USB2514/14B USB2517 USB 2.0 Hi-Speed Hub Controller PRODUCT FEATURES Datasheet General Description Features The SMSC USB251x hub is a family of low-power, OEM configurable, MTT (multi transaction translator)1 hub controller IC products for embedded USB solutions. The “x” in the part number indicates the number of downstream ports available.
USB 2.0 Hi-Speed Hub Controller Datasheet ORDER NUMBERS: LEAD-FREE ROHS COMPLIANT PACKAGE PACKAGE SIZE TEMPERATURE RANGE USB2512-AEZG USB2512A-AEZG USB2512B-AEZG USB2513-AEZG USB2513B-AEZG USB2514-AEZG USB2514B-AEZG 36QFN 6 x 6 x 0.5 mm 0ºC to 70ºC USB2512i-AEZG USB2512Ai-AEZG USB2512Bi-AEZG USB2513i-AEZG USB2513Bi-AEZG USB2514i-AEZG USB2514Bi-AEZG 36QFN 6 x 6 x 0.5 mm -40ºC to 85ºC USB2513-HZH USB2514-HZH 48QFN 7 x 7 x 0.5 mm 0ºC to 70ºC USB2517-JZX 64QFN 9 x 9 x 0.
USB 2.0 Hi-Speed Hub Controller Datasheet Table of Contents Chapter 1 USB251x Hub Family Differences Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chapter 2 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter 3 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Chapter 4 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB 2.0 Hi-Speed Hub Controller Datasheet 9.1 9.2 Maximum Guaranteed Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Chapter 10 AC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 10.1 Oscillator/Clock. . . . . . . . . . . . . . .
USB 2.0 Hi-Speed Hub Controller Datasheet List of Tables Table 1.1 Table 1.2 Table 1.3 Table 5.1 Table 5.2 Table 5.3 Table 8.1 Table 8.2 Table 8.3 Table 8.4 Table 8.5 Table 8.6 Table 8.7 Table 8.8 Table 8.9 Table 9.1 Table 9.2 36-pin QFN (6x6x0.5 mm) RoHS Compliant Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 48-pin QFN (7x7x0.5 mm) RoHS Compliant Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 64-pin QFN (9x9x0.5 mm) RoHS Compliant Part Numbers . . . . . . . .
USB 2.0 Hi-Speed Hub Controller Datasheet List of Figures Figure 4.1 Figure 5.1 Figure 5.2 Figure 5.3 Figure 5.4 Figure 5.5 Figure 5.6 Figure 6.1 Figure 7.1 Figure 8.1 Figure 8.2 Figure 8.3 Figure 8.4 Figure 8.5 Figure 9.1 Figure 10.1 Figure 10.2 Figure 10.3 Figure 11.1 Figure 11.2 Figure 11.3 Figure 11.4 Figure 11.5 Figure 11.6 USB251x Hub Family Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-Port 36-Pin QFN . . . . . . . . . . . . . . . . . . . . . .
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 1 USB251x Hub Family Differences Overview Table 1.1 36-pin QFN (6x6x0.
USB 2.0 High-Speed 2-Port Hub Controller Datasheet Chapter 2 General Description The SMSC USB251x hub family is a group of low-power, OEM configurable, MTT (multi transaction translator)1 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.
USB 2.
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 3 Acronyms I2C®: Inter-Integrated Circuit1 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.I2C is a registered trademark of Philips Corporation. Revision 1.
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 4 Block Diagram To Upstream VBUS Upstream USB Data To EEPROM or SMBus Master 24 MHz Crystal SDA SCK 3.3 V BusPower Detect/ Vbus Pulse Upstream PHY Regulator Serial Interface PLL Serial Interface Engine Repeater ... 3.3 V TT #1 Regulator Controller TT #x Port Controller CRFILT Routing & Port Re-Ordering Logic Port #1 PHY#1 OC Sense Switch Driver/ LED Drivers ...
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 5 Pin Descriptions 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.
USB 2.
USB 2.
USB 2.
USB 2.
USB 2.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.
USB 2.0 Hi-Speed Hub Controller Datasheet 5.2 USB251x Pin Descriptions (Grouped by Function) Table 5.2 USB251x Pin Descriptions SYMBOL BUFFER TYPE DESCRIPTION UPSTREAM USB 2.0 INTERFACES USBDM_UP USBDP_UP IO-U VBUS_DET I/O12 USB Data These pins connect to the upstream USB bus data signals (host, port, or upstream hub). Detect Upstream VBUS Power Detects state of Upstream VBUS power.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.2 USB251x Pin Descriptions (continued) SYMBOL BUFFER TYPE DESCRIPTION DOWNSTREAM USB 2.0 INTERFACES (continued) LED_A_N[x:1] / I/O12 Port LED Indicators This pin will be active low when LED support is enabled via EEPROM or SMBus. Port Swap Strapping Option PRTSWP[x:1] If this strap is enabled by package and configuration settings (see Table 8.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.2 USB251x Pin Descriptions (continued) SYMBOL BUFFER TYPE DESCRIPTION DOWNSTREAM USB 2.0 INTERFACES (continued) LED_B_N[2:1] / I/O12 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. If this strap option is enabled by package and configuration settings (see Table 8.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.2 USB251x Pin Descriptions (continued) SYMBOL BUFFER TYPE DESCRIPTION SERIAL PORT INTERFACES SDA / I/OSD12 Serial Data signal (SDA) Server Message Block Data signal (SMBDATA) SMBDATA / Non-removable port strap option NON_REM[1] If this strap is enabled by package and configuration settings (see Table 8.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.2 USB251x Pin Descriptions (continued) SYMBOL BUFFER 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.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.2 USB251x Pin Descriptions (continued) SYMBOL BUFFER TYPE SEL48 I DESCRIPTION 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. ‘0’ = 24 MHz ‘1’ = 48 MHz POWER, GROUND, and NO CONNECTS CRFILT VDD Core Regulator Filter Capacitor This pin must have a 1.0 μF (or greater) ±20% (ESR <0.1 VSS. VDD33 3.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 5.3 Buffer Type Descriptions (continued) BUFFER I/O12 I/OSD12 DESCRIPTION Input/Output buffer with 12 mA sink and 12 mA source. Open drain with Schmitt trigger and 12 mA sink. Meets the I2C-Bus specification, version 2.1, requirements. ICLKx XTAL clock input. OCLKx XTAL clock output. I-R I/O-U Revision 1.0 (3-11-09) RBIAS. Analog Input/Output defined in USB specification.
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 6 LED Usage Description 6.1 LED Functionality USB2513 and USB2514 (48-pin QFN only) and USB2517/17i SMSC hubs support two different (mutually exclusive) LED modes. The ‘x’ 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. 6.1.
USB 2.0 Hi-Speed Hub Controller Datasheet 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 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.
USB 2.0 Hi-Speed Hub Controller 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 specification, version 1.1.
USB 2.0 Hi-Speed Hub Controller 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.
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 8 Configuration Options 8.1 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.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 8.
USB 2.0 Hi-Speed Hub Controller 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.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 8.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.3 Register 02h: Product ID (LSB) BIT NUMBER BIT NAME DESCRIPTION 7:0 PID_LSB Least 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. 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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.7 Register 06h: CONFIG_BYTE_1 BIT NUMBER BIT NAME 7 SELF_BUS_PWR DESCRIPTION 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.
USB 2.0 Hi-Speed Hub Controller Datasheet BIT NUMBER BIT NAME 2:1 CURRENT_SNS DESCRIPTION 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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.9 Register 08h: Configuration Data Byte 3 BIT NUMBER BIT NAME 7:4 Reserved 3 PRTMAP_EN DESCRIPTION Reserved 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).
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.11 Register 0Ah: Port Disable For Self-Powered Operation BIT NUMBER BIT NAME 7:0 PORT_DIS_SP DESCRIPTION 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_EN='0'), this selects the ports which will be permanently disabled, and are not available to be enabled or enumerated by a host controller.
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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.16 Register 0Fh: Hub Controller Max Current For 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 buspowered hub. This value will include the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.22 Register 15h: Serial String Length BIT NUMBER BIT NAME 7:0 SER_STR_LEN DESCRIPTION Serial String Length When supported, the maximum string length is 31 characters. 8.2.1.23 Register 16h-53h: Manufacturer String BIT NUMBER BIT NAME 7:0 MFR_STR DESCRIPTION Manufacturer String, UNICODE UTF-16LE per USB 2.0 specification When supported, the maximum string length is 31 characters (62 bytes). Note: 8.2.1.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.25 Register 92h-CFh: Serial String BIT NUMBER BIT NAME 7:0 SER_STR DESCRIPTION Serial String, UNICODE UTF-16LE per USB 2.0 specification When supported, the maximum string length is 31 characters (62 bytes). Note: 8.2.1.26 The string consists of individual 16-bit UNICODE UTF-16LE characters.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.28 Register F7h: Boost_7:5 BIT NUMBER BIT NAME 7:6 Reserved 5:4 BOOST_IOUT_7 DESCRIPTION Reserved USB electrical signaling drive strength Boost Bit for Downstream Port ‘7’.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.29 Register F8h: Boost_4:0 BIT NUMBER BIT NAME 7:6 BOOST_IOUT_4 DESCRIPTION USB electrical signaling drive strength Boost Bit for Downstream Port ‘4’.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.31 Register FBh: PortMap 12 BIT NUMBER BIT NAME 7:0 PRTR12 DESCRIPTION PortMap register for ports 1 & 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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.32 Register FCh: PortMap 34 BIT NUMBER BIT NAME 7:0 PRTR34 DESCRIPTION PortMap register for ports 3 & 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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.33 Register FDh: PortMap 56 BIT NUMBER BIT NAME 7:0 PRTR56 DESCRIPTION PortMap register for ports 5 & 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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.34 Register FEh: PortMap 7 BIT NUMBER BIT NAME 7:0 PRTR7 DESCRIPTION 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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.2.1.35 Register FFh: Status/Command BIT NUMBER BIT NAME 7:3 Reserved 2 INTF_PW_DN DESCRIPTION Reserved 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.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.3 SMBus Slave Interface Instead of loading User-Defined Descriptor data from an external EEPROM, the SMSC hub can be configured to receive 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] & 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).
USB 2.0 Hi-Speed Hub Controller Datasheet 8.3.2.2 Block Read A block read differs from a block write in that the repeated start condition exists to satisfy the I2C specification’s requirement for a change in the transfer direction. 1 S 7 Slave Address 1 1 8 1 1 7 1 1 Wr A Register Address A S Slave Address Rd A ... 8 1 8 1 8 1 8 1 1 Byte Count = N A Data byte 1 A Data byte 2 A Data byte N A P Block Read Figure 8.2 Block Read 8.3.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.3.9 SMBus Alert Response Address The SMBALERT# signal is not supported by the hub. 8.3.9.1 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. 8.3.9.2 Reserved Registers Reserved registers should be written to ‘0’ unless otherwise specified. Contents read should be ignored. 8.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.6.1.1 RESET_N for Strapping Option Configuration Hardware reset asserted Drive Strap Outputs to inactive levels Read Strap Options t1 Attach USB Upstream USB Reset recovery t7 t6 t5 Start completion request response Idle t8 t2 t3 RESET_N VSS t4 Strap Pins Don’t Care Valid Driven by Hub if strap is an output. Don’t Care VSS Figure 8.3 Reset_N Timing for Default/Strap Option Mode Table 8.
USB 2.0 Hi-Speed Hub Controller Datasheet 8.6.1.2 RESET_N for EEPROM Configuration Hardware reset asserted Read Strap Options Read EEPROM + Set Options Attach USB Upstream USB Reset recovery Start completion request response Idle t4 t1 t2 t6 t5 t3 t7 RESET_N VSS Figure 8.4 Reset_N Timing for EEPROM Mode Table 8.8 Reset_N Timing for EEPROM Mode NAME DESCRIPTION MIN t1 RESET_N Asserted. t2 Hub Recovery/Stabilization. t3 EEPROM Read / Hub Config. t4 USB Attach (See Note).
USB 2.0 Hi-Speed Hub Controller Datasheet RESET_N for SMBus Slave Configuration 8.6.1.3 Hardware reset asserted Reset Negation SMBus Code Hub PHY Load Stabilization t1 t2 Attach USB Upstream USB Reset recovery t6 t5 t4 t3 Start completion request response Idle t7 RESET_N VSS Figure 8.5 Reset_N Timing for SMBus Mode Table 8.9 Reset_N Timing for SMBus Mode NAME DESCRIPTION MIN t1 RESET_N Asserted. t2 Hub Recovery/Stabilization. t3 SMBus Code Load (See Note).
USB 2.0 Hi-Speed Hub Controller Datasheet 6. 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. SMSC USB251x 59 DATASHEET Revision 1.
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 9 DC Parameters 9.1 Maximum Guaranteed Ratings PARAMETER SYMBOL MIN MAX UNITS Storage Temperature TSTOR -55 150 °C Lead Temperature 3.3 V supply voltage Refer to JEDEC Specification J-STD020D. VDD33 PLLFILT CRFILT 4.6 V Voltage on any I/O pin -0.5 5.5 V Voltage on XTALIN -0.5 4.0 V Voltage on XTALOUT -0.5 2.5 V 9.2 COMMENTS Applies to all parts. Note 9.
USB 2.0 Hi-Speed Hub Controller Datasheet Voltage tRT VDD33 3.3 V 100% 90% VSS 10% t90% t10% Time Figure 9.1 Supply Rise Time Model Table 9.1 DC Electrical Characteristics PARAMETER SYMBOL MIN TYP MAX UNITS 0.8 V COMMENTS I, IS Type Input Buffer Low Input Level VILI High Input Level VIHI 2.0 IIL -10 +10 μA VHYSI 250 350 mV 0.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 9.1 DC Electrical Characteristics (continued) PARAMETER SYMBOL MIN TYP MAX UNITS 0.4 V COMMENTS O12, I/O12 &I/OSD12 Type Buffer Low Output Level High Output Level Output Leakage Hysteresis (‘SD’ pad only) VOL V IOL = 12 mA @ VDD33 = 3.3 V VOH 2.4 IOL -10 +10 μA IOH = -12 mA @ VDD33 = 3.3 V VHYSC 250 350 mV VIN = 0 to VDD33 (Note 9.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 9.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 9.
USB 2.0 Hi-Speed Hub Controller Datasheet Table 9.2 Pin Capacitance LIMITS PARAMETER Clock Input Capacitance Input Capacitance Output Capacitance Note 9.5 SMSC USB251x SYMBOL MIN TYP MAX UNIT TEST CONDITION CXTAL 2 pF All pins except USB pins and the pins under the test tied to AC ground. CIN 10 pF (See Note 9.5) COUT 20 pF Capacitance TA = 25°C; fc = 1 MHz; VDD33 = 3.3 V 65 DATASHEET Revision 1.
USB 2.0 Hi-Speed Hub Controller Datasheet Chapter 10 AC Specifications 10.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24/481 MHz ±350 ppm. External Clock: 50% Duty cycle ± 10%, 24/48 MHz ± 350 ppm, Jitter < 100 ps rms. XTAL1 (CS1 = CB + CXTAL ) C1 Crystal 1 Meg CL C2 XTAL2 (CS2 = CB + CXTAL ) Figure 10.1 Typical Crystal Circuit Note: CB equals total board/trace capacitance. (C1 + CS1) x (C2 + CS2) CL = (C1 + CS1 + C2 + CS2) Figure 10.
USB 2.0 High-Speed 2-Port Hub Controller 67 DATASHEET SMSC USB251x Figure 11.1 36-Pin QFN, 6x6 mm Body, 0.5 mm Pitch Datasheet Revision 1.
USB 2.0 High-Speed 2-Port Hub Controller Datasheet Revision 1.0 (3-11-09) 68 DATASHEET SMSC USB251x Figure 11.2 48-Pin QFN, 7x7 mm Body, 0.
USB 2.0 High-Speed 2-Port Hub Controller Datasheet Revision 1.0 (3-11-09) 69 DATASHEET SMSC USB251x Figure 11.3 64-Pin QFN, 9x9 mm Body, 0.
USB 2.0 Hi-Speed Hub Controller Datasheet 11.1 Tape and Reel Specifications Figure 11.4 36-Pin Package Tape Specifications Revision 1.
USB 2.0 Hi-Speed Hub Controller Datasheet Figure 11.5 48-Pin Package Tape Specifications SMSC USB251x 71 DATASHEET Revision 1.
USB 2.0 Hi-Speed Hub Controller Datasheet Figure 11.6 36-Pin and 48-Pin Package Reel Specifications Revision 1.