EVB-USB3330 USB Transceiver Evaluation Board User Manual Copyright © 2009 SMSC or its subsidiaries. All 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 inaccuracies. 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 the 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. SMSC EVB-USB3330 USER MANUAL Revision 1.1 (02-02-10) EVB-USB3330 USB Transceiver Evaluation Board User Manual 1 Introduction This user manual is for the USB3330 USB Transceiver Evaluation Board (EVB) for use with USB3330 products. The USB3330 features a ULPI interface to support systems with USB Host, Device, or On-the-Go (OTG) capability. SMSC supplies a complete family of transceiver products to meet the needs of many applications. 2 Overview The EVB-USB3330 is a Daughter Card designed to plug into a user's test system using a T&MT connector. The card attaches to a USB link layer to create a USB Host, Device, or On-the-Go (OTG) system. The board edge connector meets the UTMI+ Low Pin Interface (ULPI) Standard requirements for the T&MT connector. A link to the ULPI Working Group Page is available at www.smsc.com or may be obtained from your local FAE. The EVB-USB3330 includes USB3330 packaged silicon and all external components required for the USB transceiver function. This manual describes PCB assembly PCB-7164AZ. 2.1 Supplying VBUS Voltage In Host or OTG operation, the EVB-USB3330 must provide 5 Volts on VBUS at the USB connector. The EVB-USB3330 includes a switch that can drive VBUS using the 5 Volt supply that comes from pin 28 of the T&MT connector. The VBUS switch is controlled by the DRVVBUS pin on the T&MT connector. The presence of a zero ohm resistor at R13 will route the 5V signal to the part and USB connectors. If R13 is empty then the EVB will not supply 5V. The board will operate as a USB Peripheral. The 5 Volt switch is backdrive protected when in the off state. See Section 2.7 and Section 2.8 for more information on configuring the EVB-USB3330 for OTG and Host operation. The zero ohm resistor on R24 can be removed to permanently leave the VBUS switch on. 2.2 Edge Connector for Digital I/O The T&MT edge connector is compliant to the ULPI specification. Part numbers and manufacturers for this connector and it’s mate are given in Table 2.1 Table 2.1 Edge Connector on the EVB-USB3330 2.3 PART NUMBER DESCRIPTION MANUFACTURER 2-557101-5 100 pin edge connector on EVB-USB3330 AMP 2-557-101-5 Mating connector to the EVB-USB3330 AMP 1-1734037-0 Alternate 100 pin edge connector for EVB-USB3330 TYCO 1-1734099-0 Alternate mating connector to the EVB-USB3330 TYCO REFCLK Frequency Selection The EVB-USB3330 offers a user selectable reference clock frequency. R11, R14-R16 are used to configure the REF[1:0] signals which will select the reference clock frequency desired on the EVBUSB3330. Ensure that the frequency of the reference clock or reference crystal being used matches the desired operation frequency configured based on Table 2.2 below. By default, the EVB-USB3330 Revision 1.1 (02-02-10) 2 USER MANUAL SMSC EVB-USB3330 EVB-USB3330 USB Transceiver Evaluation Board User Manual is configured for 26MHz REFCLK operation.The Resistor pads are either installed with a zero ohm resistor, or left empty. Table 2.2 Reference Frequency Selection Resistor Configurations 2.4 R11 R16 R14 R15 REFCLK FREQUENCY EMPTY INSTALL INSTALL EMPTY 13.0 MHz INSTALL EMPTY INSTALL EMPTY 24.0 MHz EMPTY INSTALL EMPTY INSTALL 19.2 MHz INSTALL EMPTY EMPTY INSTALL 26.0 MHz (Default) USB Connector A standard Mini-AB connector is provided to attach a USB cable or connector. The footprint can also accept a micro-AB connector. See the bill of materials in Section 6 for connector part numbers. Do not substitute a different part number for the Mini-AB receptacle or a short circuit of the USB signals may result at the micro-AB connector PCB footprint. 2.5 VBUS Present Detection The USB controller must detect VBUS when a USB cable is attached in device mode or when the USB controller turns on VBUS in host or OTG mode. The USB connector VBUS signal is connected to the VBUS pin of the USB3330. The USB3330 includes all of the comparators required to detect VBUS and report the state of VBUS to the USB controller via the ULPI bus. 2.6 ULPI Signal Test Points Probe points at location J2, provide access to all ULPI signals. Install the Tektronix logic analyzer probe retention kit at J2 to probe these signals. Ordering information for the retention kit is provided in the bill of materials 2.7 Converting the EVB to an OTG System “Out of the box”, the EVB-USB3330 is delivered as a USB Device system. To convert it to be a USB OTG development board, the following modifications must be made: 1. Install R13 (zero ohm resistor). This connects the VBUS 5V switch to the VBUS signal. 2. Remove R23. This is the RVBUS value required for a USB Device. 3. Install R10 (1.0K, 1W resistor). This is the RVBUS value required for a USB OTG Device. Since the USB3330 is designed to accommodate up to 30V on VBUS, R10 is rated at 1W to accommodate this entire voltage range. Refer to the USB333X datasheet for more information on sizing this resistor 2.8 Converting the EVB to a Host System “Out of the box”, the EVB-USB3330 is delivered as a USB Device System. To convert it to be a USB Host development board, the following modifications must be made: 1. Install R13 (zero ohm resistor). This connects the VBUS 5V switch to the VBUS signal. 2. Install C20 (150uF capacitor). This increases the value of CVBUS to be USB 2.0 Host compliant. SMSC EVB-USB3330 3 USER MANUAL Revision 1.1 (02-02-10) EVB-USB3330 USB Transceiver Evaluation Board User Manual 2.9 Converting the EVB to Support ULPI Clock Input Mode “Out of the box”, the EVB-USB3330 uses an oscillator (X1) as the clock reference, and is configured for ULPI Clock Output Mode where CLKOUT sources a 60MHz clock. To convert the EVB to support ULPI Clock Input Mode, the following changes must be made: 1. Install R12 (zero ohm resistor). This shorts CLKOUT to VDD18. 2. Install R3 (zero ohm resistor). This shorts REFCLK to the System Clock pin on the T&MT connector. 3. Remove R4 and R7. This will disconnect the onboard reference clock source from the part. Refer to the USB3330 datasheet for more information on ULPI Clock Input Mode. 2.10 T&MT Pin Description The T&MT signal names, pin number and function are described in Table 43 and Table 44 of the ULPI Specification rev 1.1. The EVB-USB3330 fully implements a ULPI compliant interface to the T&MT connector, including support for ULPI Clock Input Mode. This EVB supports a 1.8V ULPI I/O voltage. All signals are described in Table 2.3 Table 2.3 T&MT Connector Pin Definitions PIN NAME 86, 36, 85, 34, 83, 33, 82, 31 DATA[7:0] 96 DESCRIPTION DIRECTION ULPI Data Bus IN/OUT STP ULPI STP Signal INPUT TO EVB 70 DIR ULPI DIR Signal OUTPUT FROM EVB 71 NXT ULPI NXT Signal OUTPUT FROM EVB 90 CLKOUT ULPI Clock Signal OUTPUT FROM EVB 14 DRVVBUS VBUS Switch enable. When high the VBUS switch will turn on routing 5V to the VBUS pin (if R13 is present) INPUT 55 VBUS_FAULT_N Driven low by the VBUS switch (U2) in the event of a switch fault condition. OUTPUT 17 RESET Asserting RESET will place the USB3330 in a low power state. Upon exiting this state (RESET=0), all ULPI registers will contain power-on reset values. INPUT 47 VBUS_IN This pin is not connected NO CONNECT 28 VBUS_OUT +5V from the T&MT connector INPUT TO EVB 8, 16, 57, 69 VDD +3.3V from the T&MT connector INPUT TO EVB 52 SYSTEM_CLOCK Optional clock input to EVB. The EVB is built with the USB3330 REFCLK provided by an oscillator. See Section 2.9 for more information on configuring the EVB-USB3330 for ULPI Clock Input mode. NO CONNECT (input to EVB if R3 is installed) Refer to Schematic for Connector Pin Assignment Revision 1.1 (02-02-10) 4 USER MANUAL SMSC EVB-USB3330 EVB-USB3330 USB Transceiver Evaluation Board User Manual Table 2.3 T&MT Connector Pin Definitions PIN NAME DESCRIPTION DIRECTION 100 PSU_SHD_N This pin is driven low indicating that +3.3V must be sourced from the link through the T&MT connector pins 8, 16, 57, 69 and +5.0V must be sourced from the link through the T&MT connector pin 28. OUTPUT FROM EVB 49 DC_PSNT_N This pin is driven low indicating a daughter card is present. OUTPUT FROM EVB 3 Getting Started The block diagram in Figure 3.1 gives a simplified view of the EVB-USB3330. The EVB-USB3330 is ready for device operation. To modify the board for OTG or Host applications, refer to Section 2.7 or Section 2.8, respectively. It is required to provide +5V to T&MT connector pin 28 and +3.3V on T&MT pins 8,16,57,69 to power the EVB-USB3330. The EVB-USB3330 is built with a USB Mini-AB receptacle. Do not substitute a Mini-AB receptacle different from the one specified in the bill of materials, or a short circuit may occur on the USB signals at the Micro-AB connector PCB footprint. Install C20=150uF if host operation is desired VBUS Switch ONA 2.2uF FAULTAn 150uF EXT_VBUS_DET VBUS +5V J1 100-pin T&MT RESET USB3330 DM DM DP DP ID ID VBAT GND VDD3p3 1.0uF RESETB VDD1p8 1.0uF ULPI Signals ULPI Bus REFCLK PCB can accept Micro-AB Or Mini-AB receptacle REF[1:0] USER REFCLK CONFIG Figure 3.1 Block Diagram of EVB-USB3330 When the EVB-USB3330 is powered on, check the following things to be certain the board is functioning normally: SMSC EVB-USB3330 5 USER MANUAL Revision 1.1 (02-02-10) EVB-USB3330 USB Transceiver Evaluation Board User Manual RESET should be de-asserted (logic low at the T&MT connector and RESETB at the USB3330 should be logic high = VDD18). If RESETB=0, the USB3330 will be in a low power state. The voltage at R2 (RBIAS) should be 0.8V DC. If this voltage is not present, the USB3330 is in a low power state. There should be a digital 60 MHz square wave signal at T&MT connector pin 90. The amplitude should be approximately 1.8V. This is the CLKOUT signal of the USB3330 (Except when the part is configured for Clock Input Mode see Section 2.9 for more details.) The voltage at C3 should be approximately 3.3V. This is the USB3330 internal 3.3V voltage regulator output. The voltage at C4 should be 1.8V. This is the USB3330 internal 1.8V regulator output. 4 Protecting VBUS from Non-Compliant VBUS Voltages The USB3330 is fully tolerant to VBUS voltages up to 30V. An external resistor on the VBUS line (RVBUS) is required for the integrated overvoltage protection circuit in the USB3330. RVBUS is either R10 or R23 on the EVB-USB3330. For peripheral and host applications, RVBUS is 10K (install R23, remove R10). For OTG applications, RVBUS is 1K (install R10, remove R23). Revision 1.1 (02-02-10) 6 USER MANUAL SMSC EVB-USB3330 A B C DNP R6 10.0K 1/16W +5.0V 2 1 TP1 OUT VCC 26.0 MHZ GND EN X1 R5 10.0K 1/16W TEST_POINT DRVVBUS VBUS_FAULT_N 3 4 49 100 52 28 47 1 26 3 29 5 6 56 7 58 11 61 12 63 50 78 60 75 66 72 74 22 19 20 18 67 25 23 98 48 55 97 59 10 79 37 88 41 91 42 93 44 94 99 30 89 64 77 14 40 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VIO VIO VIO VDD VDD VDD VDD Reset Clk DIR NXT STP SPKR_MIC SPKR_L DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 2 4 9 13 21 24 27 32 35 39 43 46 51 53 54 62 65 68 73 76 80 84 92 95 81 87 38 8 16 57 69 17 90 70 71 96 45 15 31 82 33 83 34 85 36 86 5 +3.3V C9 0.1uF 10V 1 2 U6 +3.3V LINKCLK DNP R4 0.1W C8 0.1uF 10V R3 0.1W +3.3V RESET R7 0.1W 74LVC1G04 4 REFCLK Source AMP_UTMI+_ULPI DC_PSNT_N PSU_SHD_N System_Clock VBUS_out VBUS_in GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7 GPIO8 GPIO9 GPIO10 GPIO11 GPIO12 GPIO13 GPIO14 Reserved1 Reserved2 Reserved3 Reserved4 Reserved5 Reserved6 Reserved7 Reserved8 Reserved9 Reserved10 Reserved11 Reserved12 Reserved13 Reserved14 Reserved15 Reserved16 Reserved17 Reserved18 Reserved19 Reserved20 Reserved21 Reserved22 Reserved23 Reserved24 Reserved25 Reserved26 Reserved27 Reserved28 Reserved29 Reserved30 Reserved31 Reserved32 Reserved33 Reserved34 J1 T&MT Connector U8 ZERO DNP ZERO DNP ZERO 1 2 C13 0.1uF 10V 74LVC1G04 4 +3.3V DNP R12 ZERO 0.1W REFCLK RESETB CLKOUT DIR NXT STP DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 3 4 R25 1/16 W 27 VDD18 DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA3 DATA2 DATA1 DATA0 NXT CLKOUT U10 24.0 MHz 13.0 MHz 26.0 MHz 19.2 MHz REF1 REF0 USB3330 VBAT VBUS ID E1 D1 D2 C1 C2 B1 8.06K R15 ZERO DNP R14 ZERO DP DM VDD33 R2 1/16W DNP R16 ZERO R11 ZERO R10 1W R23 1/10W C3 1.0uF 6.3V +5.0V C11 0.1uF 10V 20K DNP 1.0K + C1 2.2uF 50V DRVVBUS VBUS_FAULT_N 1 2 4 3 74LVC1G07 U5 +3.3V R24 ZERO +5.0V 5 2 3 4 1 U2 OUTA GND OUTB MAX1823B ONB FAULTB INA IN INB ONA FAULTA 6 9 8 7 10 + 2 DNP C20 150uF 10V DNP R13 ZERO DNP Micro-AB VBUS DD+ ID GND SHIELD1 SHIELD2 SHIELD3 SHIELD4 P1 R13 1 2 3 4 5 6 7 8 9 2 TP2 DNP Peripheral Zero Ohm Host / OTG VBUS DM DP ID +3.3V For host applications 150 uF to to ground is required on VBUS to comply with the USB2.0 specification. C2 0.1uF 10V R9 10.0K 1/16W R1 100K 1/10W +3.3V For Host/OTG applications a VBUS switch is required 11 10 01 00 REFCLK REF[1:0] Source D5 C4 C5 B4 DATA1 B5 A5 DATA0 C4 1.0uF 6.3V NXT DIR STP RESETB REFCLK This portion of the schematic shows components needed for PHY to operate in a HS device application. DATA4 D4 B2 D 5 3 A4 DIR B3 VDD18 A1 RBIAS A3 STP DATA6 E4 DATA5 E5 RESETB A2 REFCLK REF1 E3 REF0 E2 VSS C3 4 EVB-USB3330 Evaluation Board 5 3 Date: Size C Title VBUS DM DP ID TEST_POINT STP DATA1 DATA0 DATA3 DATA2 DATA5 DATA4 DATA7 DATA6 DIR NXT RESETB DRVVBUS VBUS_FAULT_N CLKOUT LINKCLK A1 A2 B2 B3 A4 A5 B5 B6 B8 B9 A10 A11 B11 B12 A13 A14 B14 B15 A16 A17 B17 B18 A19 A20 A22 A23 B23 B24 A25 A26 B26 B27 B21 B20 A7 A8 DNP 1 Thursday, February 04, 2010 Document Number SCH-7164AZ-E00 TEK_6960_CONN_ALT 1 of 1 3930 East Ray Road Suite 200 Phoenix, Arizona 85044 480-759-0200 Sheet A0/C2:0 A0/C2:1 A0/C2:2 A0/C2:3 A0/C2:4 A0/C2:5 A0/C2:6 A0/C2:7 A1/C3:0 A1/C3:1 A1/C3:2 A1/C3:3 A1/C3:4 A1/C3:5 A1/C3:6 A1/C3:7 D1/A3:7 D1/A3:6 D1/A3:5 D1/A3:4 D1/A3:3 D1/A3:2 D1/A3:1 D1/A3:0 D0/A2:7 D0/A2:6 D0/A2:5 D0/A2:4 D0/A2:3 D0/A2:2 D0/A2:1 D0/A2:0 CK2+ CK2-- CK1+ CK1-- J2 ULPI Testpoints CON-USB_MINIAB SHLD1 SHLD2 SHLD3 SHLD4 VBUS DD+ ID GND P2 TEST_POINT USB3330 Customer Reference Board 6 7 8 9 1 2 3 4 5 TP3 1 B1 A27 B25 A12 A24 B22 A9 A21 B19 GND GND GND GND GND GND GND GND GND DATA7 D3 5 3 USER MANUAL 7 GND GND GND GND GND GND GND GND GND SMSC EVB-USB3330 B4 B7 B10 B13 A15 A3 B16 A18 A6 5 Rev B A B C D EVB-USB3330 USB Transceiver Evaluation Board User Manual 5 EVB-USB3330 Schematic Figure 5.1 EVB-USB3330 Schematic Revision 1.1 (02-02-10) Revision 1.1 (02-02-10) C20 R1 R2 R3, R4, R12, R13, R14, R16 R7, R11, R15, R24 R5, R9 R6 R10 R23 U2 U5 U6 U8 U10 P1 P2 40 50 60 90 100 110 120 130 140 150 160 170 180 190 USER MANUAL 8 230 220 210 200 80 70 5 30 Value 0.1µF, 10V 1.0µF, 6.3V 2.2µF, 50V 20K 1K 10K 10K ZERO ZERO 8.06K 100K 1% 1% ±5% ±5% ±5% ±5% ±1% ±5% ±20% 20% 20% ±10% IC SINGLE BUFFER, OD OUTPUT SOT-23-5 IC SINGLE INVERTER-GATE SOT-23-5 IC SINGLE INVERTER-GATE SOT-23-5 USB High Speed Transceiver IC SW USB DUAL W/FB 10-UMAX RES 20.0K OHM 1/10W 0603 SMD RES 1K OHM 1W 2512 SMD RES 10K OHM 1/16W 5% 0402 SMD RES 10K OHM 1/16W 5% 0402 SMD RES ZERO OHM 1/16W 5% 0402 SMD RES ZERO OHM 1/16W 5% 0402 SMD RES 8.06K OHM 1/16W 1% 0402 SMD RES 100K OHM 1/16W 5% 0402 SMD CAP 150UF 16V ELECT FK SMD CAP CER 0.1UF 16V Y5V 0402 CAP CER 1.0UF 6.3V X5R 0402 CAP CER 2.2UF 50V X7R 1206 Tolerance Description TEXAS INSTRUMENTS TEXAS INSTRUMENTS TEXAS INSTRUMENTS SMSC Maxim Integrated Products YAGEO PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC Vishay/Dale Vishay/Dale PANASONIC Kemet SN74LVC1G07DBVR SN74LVC1G04DBVR SN74LVC1G04DBVR USB3330A-GL-TR MAX1823BEUB+ RC0603FR-0720KL ERJ-1TYF102U ERJ-2GEJ103X ERJ-2GEJ103X ERJ-2GE0R00X ERJ-2GE0R00X CRCW04028K06FKED CRCW0402100KJNED EEV-FK1C151XP C0402C104K8PACTU GRM155R60J105KE19D Murata Electronics North America Manufacturer Part Number GRM31CR71H225KA88L Manufacturer Murata Electronics North America CONN RCPT MICRO USB AB SMD R/A Hirose Electric Co Ltd ZX62-AB-5P USB-OTG, Mini AB Receptacle, Surface Molex/Waldom Electronics Corp 56579-0576 Mount Right Angle J1 1 RCPT ASSY,R/A,CHAMP 050,100 P TYCO ELECTRONICS/AMP 1-1734037-0 Retention Kit for P6960/P6980 Logic analyzer J2 DNP Tektronix 020-2539-00 Probe TP1, TP2, TP3 3 PC TEST POINT MINIATURE SMT Keystone Electronics 5015 OSCILLATOR PROG 3.3V +-50PPM SMD X1 1 Note 1 ABRACON CORPORATION AP3S-BLANKS 26.0MHz Note 1 Oscillator frequency depends on frequency selected by U10 pins REFSEL[2:0]. Frequency must be specified at time of order. 1 DNP 1 DNP 1 1 1 1 DNP 2 DNP 4 DNP 1 1 DNP 150.0µF,16V 2 C3, C4 1 QTY C2, C8, C9, C11, C13 C1 10 20 Ref Des Item Number BOM Rev: A Date 12/2/2008 PCB: PCB7164AZ-A00 Transceiver: USB3330 AP3S3EC-ND 5015KCT-ND A33470-ND WM17122CT-ND H11495CT-ND 296-8485-1-ND 296-11599-1-ND 296-11599-1-ND MAX1823BEUB+-ND 311-20.0KHRCT-ND PT1KAECT-ND P10KJCT-ND P10KJCT-ND P0.0JCT-ND P0.0JCT-ND 541-8.06KLCT-ND 541-100KJCT-ND PCE3512CT-ND 399-3027-1-ND 490-1320-1-ND 490-3367-1-ND Digikey Part Number EVB-USB3330 USB Transceiver Evaluation Board User Manual 6 EVB-USB3330 Bill of Materials Figure 6.1 EVB-USB3330 Bill of Materials SMSC EVB-USB3330 EVB-USB3330 USB Transceiver Evaluation Board User Manual 7 Revision History Table 7.1 Revision History REVISION LEVEL & DATE SECTION/FIGURE/ENTRY Rev. 1.1 (02-02-10) Rev. 1.0 (08-19-09) SMSC EVB-USB3330 CORRECTION Cosmetic changes Initial Release 9 USER MANUAL Revision 1.1 (02-02-10)