USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver PRODUCT FEATURES Datasheet Integrated ESD protection circuits — Up to ±15kV IEC Air Discharge without external devices Over-Voltage Protection circuit (OVP) protects the VBUS pin from continuous DC voltages up to 30V Integrated USB Switch — No degradation of Hi-Speed electrical characteristics — Allows single USB port of connection by providing switching function for: – Battery charging – Stereo and mono/mic audio – USB Full-Speed/Low-Speed data flexPWR® Technology — Low current design ideal for battery powered applications — “Sleep” mode tri-states all ULPI pins and places the part in a low current state — 1.8V to 3.3V IO Voltage (±10%) Integrated battery to 3.3V regulator — 2.2uF bypass capacitor — 100mV dropout voltage “Wrapper-less” design for optimal timing performance and design ease — Low Latency Hi-Speed Receiver (43 Hi-Speed clocks Max) allows use of legacy UTMI Links with a ULPI bridge Selectable Reference Clock Frequency — Frequencies: 12, 13, 19.2, 24, 26, 27, 38.4, 52 or 60MHz - pin selectable External Reference Clock operation available — ULPI Input Clock Mode (60MHz sourced by Link) — 0 to 3.6V input drive tolerant — Able to accept “noisy” clock sources as reference to internal, low-jitter PLL Internal Oscillator operation available — This mode requires external Quartz Crystal or Ceramic Resonator Smart detection circuits allow identification of USB charger, headset, or data cable insertion SMSC USB3320 Includes full support for the optional On-The-Go (OTG) protocol detailed in the On-The-Go Supplement Revision 2.0 specification Supports Headset Audio Mode Supports the OTG Host Negotiation Protocol (HNP) and Session Request Protocol (SRP) UART mode for non-USB serial data transfers Internal 5V cable short-circuit protection of ID, DP and DM lines to VBUS or ground Industrial Operating Temperature -40°C to +85°C 32 pin, QFN Lead-free RoHS Compliant Package (5 x 5 x 0.90 mm height) Applications The USB3320 is targeted for any application where a HiSpeed USB connection is desired and when board space, power, and interface pins must be minimized. The USB3320 is well suited for: Networking Audio Video Medical Industrial Computers Printers Repeaters Communication DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet ORDER NUMBER(S): USB3320C-EZK for 32 pin, QFN Lead-Free RoHS Compliant Package USB3320C-EZK-TR for 32 pin, QFN Lead-Free RoHS Compliant Package (tape and reel) Reel size is 4000 pieces. 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 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. Revision 1.0 (07-14-09) 2 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 0.1 Reference Documents Universal Serial Bus Specification, Revision 2.0, April 27, 2000 On-The-Go Supplement to the USB 2.0 Specification, Revision 2.0, May 8, 2009 USB Specification Revision 2.0 "Pull-up/pull-down resistors" ECN (27% Resistor ECN) USB 2.0 Transceiver Macrocell Interface (UTMI) Specification, Version 1.02, May 27, 2000 UTMI+ Specification, Revision 1.0, February 25, 2004 UTMI+ Low Pin Interface (ULPI) Specification, Revision 1.1, October 20th, 2004 Technical Requirements and Test Methods of Charger and Interface for Mobile Telecommunication Terminal Equipment (Chinese Charger Specification Approval Draft 11/29/2006) SMSC USB3320 3 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table of Contents 0.1 Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Chapter 1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter 2 USB3320 Pin Locations and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 USB3320 Pin Locations and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1.1 Package Diagram with Pin Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1.2 Pin Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Chapter 3 Limiting Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1 3.2 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Recommended Operating Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Chapter 4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 Operating Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clock Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ULPI Interface Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Digital IO Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC Characteristics: Analog I/O Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dynamic Characteristics: Analog I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OTG Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB Audio Switch Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Regulator Output Voltages and Capacitor Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Piezoelectric Resonator for Internal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 16 16 17 17 19 20 20 21 22 Chapter 5 Architecture Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 ULPI Digital Operation and Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB 2.0 Hi-Speed Transceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.1 USB Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.2 Termination Resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bias Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Integrated Low Jitter PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.1 REFCLK Mode Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.2 REFCLK Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.3 REFCLK Jitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.4 REFCLK Enable/Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internal Regulators and POR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5.1 Integrated Low Dropout Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5.2 Power On Reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5.3 Recommended Power Supply Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5.4 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB On-The-Go (OTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6.1 ID Resistor Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6.2 VBUS Monitor and Pulsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.6.3 Driving External VBUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB UART Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB Charger Detection Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USB Audio Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference Frequency Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 23 23 24 26 26 26 28 29 29 29 29 31 31 32 33 33 36 39 39 39 40 41 Chapter 6 ULPI Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 6.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Revision 1.0 (07-14-09) 4 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 6.2 6.3 6.4 6.5 6.6 6.7 6.1.1 ULPI Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.2 ULPI Interface Timing in Synchronous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ULPI Register Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.1 ULPI Register Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.2 ULPI Register Read. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.3 ULPI RXCMD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.4 USB3320 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.5 USB Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3.1 Entering Low Power/Suspend Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3.2 Exiting Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3.3 Interface Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3.4 Minimizing Current in Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full Speed/Low Speed Serial Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Carkit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.1 USB UART Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5.2 USB Audio Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RID Converter Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Headset Audio Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 44 44 45 47 48 49 51 52 53 54 54 55 56 57 58 59 59 59 Chapter 7 ULPI Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 7.1 ULPI Register Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.1 ULPI Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.2 Carkit Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.3 Vendor Register Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 62 67 70 Chapter 8 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 8.1 8.2 8.3 Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference Designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ESD Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.1 Human Body Model (HBM) Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.2 EN/IEC 61000-4-2 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.3 Air Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3.4 Contact Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 76 76 77 77 77 77 Chapter 9 Package Outline, Tape & Reel Drawings, Package Marking . . . . . . . . . . . . . . 78 Chapter 10 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 SMSC USB3320 5 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet List of Figures Figure 1.1 Figure 2.1 Figure 5.1 Figure 5.2 Figure 5.3 Figure 5.4 Figure 5.5 Figure 5.6 Figure 5.7 Figure 5.8 Figure 5.9 Figure 5.10 Figure 5.11 Figure 5.12 Figure 6.1 Figure 6.2 Figure 6.3 Figure 6.4 Figure 6.5 Figure 6.6 Figure 6.7 Figure 6.8 Figure 6.9 Figure 6.10 Figure 8.1 Figure 8.2 Figure 8.3 Figure 9.1 Figure 9.2 Figure 9.3 Figure 9.4 Figure 9.5 USB3320 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 USB3320 Pin Locations - Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 USB3320 Internal Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Configuring the USB332X for ULPI Input Clock Mode (60 MHz) . . . . . . . . . . . . . . . . . . . . . . 27 Configuring the USB332X for ULPI Output Clock Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ULPI Output Clock Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Example of Circuit Used to Shift a Reference Clock Common-mode Voltage Level . . . . . . . 28 Powering the USB3320 from a Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Powering the USB3320 from a 3.3V Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Powering the USB3320 from VBUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ULPI Start-up Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 USB3320 ID Resistor Detection Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 USB3320 OTG VBUS Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 USB3320 Drives Control Signal (CPEN) to External Vbus Switch. . . . . . . . . . . . . . . . . . . . . 39 ULPI Digital Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ULPI Single Data Rate Timing Diagram in Synchronous Mode. . . . . . . . . . . . . . . . . . . . . . . 44 ULPI Register Write in Synchronous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ULPI Extended Register Write in Synchronous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 ULPI Register Read in Synchronous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 ULPI Extended Register Read in Synchronous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 ULPI Transmit in Synchronous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 ULPI Receive in Synchronous Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Entering Low Power Mode from Synchronous Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Exiting Low Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 USB3320 Application Diagram (Device, ULPI Output Clock mode, 24MHz) . . . . . . . . . . . . . 74 USB3320 Application Diagram (Device, ULPI Input Clock mode, 60MHz) . . . . . . . . . . . . . . 75 USB3320 Application Diagram (Host or OTG, ULPI Output Clock Mode, 24MHz) . . . . . . . . 76 USB3320 32 Pin QFN Package Outline, 5 x 5 x 0.9 mm Body (Lead-Free) . . . . . . . . . . . . . 78 QFN, 5x5 Taping Dimensions and Part Orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Reel Dimensions for 12mm Carrier Tape. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Tape Length and Part Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Package Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Revision 1.0 (07-14-09) 6 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet List of Tables Table 2.1 USB3320 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3.2 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.1 Electrical Characteristics: Operating Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.2 ULPI Clock Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.3 ULPI Interface Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.4 Digital IO Characteristics: RESETB, CLKOUT, STP, DIR, NXT, DATA[7:0] & REFCLK Pins. Table 4.5 DC Characteristics: Analog I/O Pins (DP/DM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.6 Dynamic Characteristics: Analog I/O Pins (DP/DM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.7 OTG Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.8 USB Audio Switch Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.9 Regulator Output Voltages and Capacitor Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.10 ESD and LATCH-UP Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.11 USB3320 Quartz Crystal Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 4.12 USB3320 Ceramic Resonator Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.1 DP/DM Termination vs. Signaling Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.2 REFCLK Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.3 Operating Mode vs. Power Supply Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.4 Valid Values of ID Resistance to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.5 IdGnd and IdFloat vs. ID Resistance to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.6 External VBUS Indicator Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.7 Required RVBUS Resistor Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.8 USB Weak Pull-up Enable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.9 USB Audio Switch Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 5.10 Configuration to Select Reference Clock Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.1 ULPI Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.2 ULPI TXD CMD Byte Encoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.3 ULPI RX CMD Encoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.4 Interface Signal Mapping During Low Power Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.5 Pin Definitions in 3 Pin Serial Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.6 Pin Definitions in 6 Pin Serial Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.7 ULPI Register Programming Example to Enter UART Mode . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.8 Pin Definitions in Carkit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.9 ULPI Register Programming Example to Enter Audio Mode . . . . . . . . . . . . . . . . . . . . . . . . . . Table 6.10 Pin Definitions in Headset Audio Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 7.1 ULPI Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 8.1 Component Values in Application Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 8.2 Capacitance Values at VBUS of USB Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 9.1 32 Terminal QFN Package Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 10.1 Customer Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SMSC USB3320 7 DATASHEET 10 14 14 15 16 16 17 17 19 20 20 21 21 22 22 24 26 32 35 35 37 38 40 40 41 43 45 49 53 56 57 58 58 59 60 61 73 73 78 82 Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 1 General Description The SMSC USB3320 is a Hi-Speed USB 2.0 Transceiver that provides a configurable physical layer (PHY) solution and is an excellent match for a wide variety of products. Both commercial and industrial temperature applications are supported. The frequency of the reference clock is user selectable. The USB3320 includes an internal oscillator that may be used with either a quartz crystal or a ceramic resonator. Alternatively, the crystal input can be driven by an external clock oscillator. Another option is the use of a 60MHz external clock when using the ULPI Input Clock mode. Several advanced features make the USB3320 the transceiver of choice by reducing both electrical bill of material (eBOM) part count and printed circuit board (PCB) area. Outstanding ESD robustness eliminates the need for external ESD protection devices in typical applications. The internal OverVoltage Protection circuit (OVP) protects the USB3320 from voltages up to 30V. By using a reference clock from the Link, the USB3320 removes the cost of a dedicated crystal reference from the design. And the integrated USB switch enables unique product features with a single USB port of connection. The USB3320 meets all of the electrical requirements to be used as a Hi-Speed USB Host, Device, or an On-the-Go (OTG) transceiver. In addition to the supporting USB signaling, the USB3320 also provides USB UART mode and USB Audio mode. USB3320 uses the industry standard UTMI+ Low Pin Interface (ULPI) to connect the USB Transceiver to the Link. ULPI uses a method of in-band signaling and status byte transfers between the Link and transceiver to facilitate a USB session with only 12 pins. The USB3320 uses SMSC’s “wrapper-less” technology to implement the ULPI interface. This “wrapperless” technology allows the transceiver to achieve a low latency transmit and receive time. SMSC’s low latency transceiver allows an existing UTMI Link to be reused by adding a UTMI to ULPI bridge. By adding a bridge to the ASIC the existing and proven UTMI Link IP can be reused. REFCLK XO VBUS ID DP DM ESD Protection CPEN OTG Hi-Speed USB Transceiver Crystal Oscillator and Low Jitter Integrated PLL ULPI Registers and State Machine BIAS Integrated Power Management RBIAS RESETB VBAT VDD33 VDD18 VDDIO ULPI Interface SPK_R SPK_L USB DP/DM Switch REFSEL[2:0] STP NXT DIR CLKOUT DATA[7:0] Figure 1.1 USB3320 Block Diagram Revision 1.0 (07-14-09) 8 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet The USB3320 includes an integrated 3.3V Low Drop Out (LDO) regulator that may optionally be used to generate 3.3V from power applied at the VBAT pin. The voltage on the VBAT pin can range from 3.1 to 5.5V. The regulator dropout voltage is less than 100mV which allows the transceiver to continue USB signaling when the voltage on VBAT drops to 3.1V. The USB transceiver will continue to operate at lower voltages, although some parameters may be outside the limits of the USB specifications. If the user would like to provide a 3.3V supply to the USB3320, the VBAT and VDD33 pins should be connected together as described in Section 5.5.1. The USB3320 also includes integrated pull-up resistors that can be used for detecting the attachment of a USB Charger. By sensing the attachment to a USB Charger, a product using the USB3320 can charge its battery at more than the 500mA allowed when charging from a USB Host. Please see SMSC Application Note AN 19.7 - Battery Charging Using SMSC USB Transceivers for more information on battery charging. In USB UART mode, the USB3320 DP and DM pins are redefined to enable pass-through of asynchronous serial data. The USB3320 can only enter UART mode when the user programs the part into this mode, as described in Section 6.5.1. In USB audio mode, a switch connects the DP pin to the SPK_R pin, and another switch connects he DM pin to the SPK_L pin. These switches are shown in the lower left-hand corner of Figure 5.1. The USB3320 can be configured to enter USB audio mode as described in Section 6.5.2. In addition, these switches are on when the RESETB pin of the USB3320 is asserted. The USB audio mode enables audio signalling from a single USB port of connection, and the switches may also be used to connect Full Speed USB from another transceiver onto the USB cable. SMSC USB3320 9 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 2 USB3320 Pin Locations and Definitions 2.1 USB3320 Pin Locations and Descriptions 2.1.1 Package Diagram with Pin Locations VDDIO DIR VDD18 STP VDD18 RESETB REFCLK XO 32 31 30 29 28 27 26 25 The illustration below is viewed from the top of the package. CLKOUT 1 24 RBIAS NXT 2 23 ID DATA0 3 22 VBUS DATA1 4 21 VBAT DATA2 5 20 VDD33 DATA3 6 19 DM DATA4 7 18 DP REFSEL0 8 17 CPEN USB3300 Hi-Speed USB Hi-Speed USB2 ULPI PHY ULPI PHY 32 Pin QFN 32 Pin QFN 14 15 16 SPK_L SPK_R 12 N/C REFSEL2 11 REFSEL1 13 10 DATA6 DATA7 9 DATA5 GND FLAG Figure 2.1 USB3320 Pin Locations - Top View 2.1.2 Pin Definitions The following table details the pin definitions for the figure above. Table 2.1 USB3320 Pin Description PIN NAME 1 CLKOUT DIRECTION/ TYPE ACTIVE LEVEL Output, CMOS N/A DESCRIPTION ULPI Output Clock Mode: 60MHz ULPI clock output. All ULPI signals are driven synchronous to the rising edge of this clock. ULPI Input Clock Mode: This pin is connected to VDDIO to configure 60MHz ULPI Input Clock mode as described in Section 5.4.1. Following POR or hardware reset, the voltage at CLKOUT must not exceed VIH_ED as provided inTable 4.4. Revision 1.0 (07-14-09) 10 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 2.1 USB3320 Pin Description (continued) DIRECTION/ TYPE ACTIVE LEVEL NXT Output, CMOS High The transceiver asserts NXT to throttle the data. When the Link is sending data to the transceiver, NXT indicates when the current byte has been accepted by the transceiver. The Link places the next byte on the data bus in the following clock cycle. 3 DATA[0] I/O, CMOS N/A ULPI bi-directional data bus. 4 DATA[1] I/O, CMOS N/A ULPI bi-directional data bus. 5 DATA[2] I/O, CMOS N/A ULPI bi-directional data bus. 6 DATA[3] I/O, CMOS N/A ULPI bi-directional data bus. 7 DATA[4] I/O, CMOS N/A ULPI bi-directional data bus. 8 REFSEL[0] Input, CMOS N/A This signal, along with REFSEL[1] and REFSEL[2] selects one of the available reference frequencies as defined in Table 5.10. Note: This signal must be tied to VDDIO when in ULPI 60MHz REFCLK IN mode. 9 DATA[5] I/O, CMOS N/A ULPI bi-directional data bus. 10 DATA[6] I/O, CMOS N/A ULPI bi-directional data bus. 11 REFSEL[1] Input, CMOS N/A This signal, along with REFSEL[0] and REFSEL[2] selects one of the available reference frequencies as defined in Table 5.10. Note: This signal must be tied to VDDIO when in ULPI 60MHz REFCLK IN mode. 12 N/C N/A This pin must not be connected. 13 DATA[7] I/O, CMOS N/A ULPI bi-directional data bus. 14 REFSEL[2] Input, CMOS N/A This signal, along with REFSEL[0] and REFSEL[1] selects one of the available reference frequencies as defined in Table 5.10. Note: This signal must be tied to VDDIO when in ULPI 60MHz REFCLK IN mode. 15 SPK_L I/O, Analog N/A USB switch in/out for DM signals 16 SPK_R I/O, Analog N/A USB switch in/out for DP signals PIN NAME 2 SMSC USB3320 11 DATASHEET DESCRIPTION Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 2.1 USB3320 Pin Description (continued) DIRECTION/ TYPE ACTIVE LEVEL CPEN Output, CMOS N/A External 5V supply enable. Controls the external VBUS power switch. CPEN is low on POR. 18 DP I/O, Analog N/A D+ pin of the USB cable. 19 DM I/O, Analog N/A D- pin of the USB cable. 20 VDD33 Power N/A 3.3V Regulator Output. A 2.2uF (<1 ohm ESR) bypass capacitor to ground is required for regulator stability. The bypass capacitor should be placed as close as possible to the USB3320. 21 VBAT Power N/A Regulator input. 22 VBUS I/O, Analog N/A This pin connects to an external resistor (RVBUS) connected to the VBUS pin of the USB cable. This pin is used for the VBUS comparator inputs and for VBUS pulsing during session request protocol. See Table 5.7, "Required RVBUS Resistor Value". 23 ID Input, Analog N/A ID pin of the USB cable. For applications not using ID this pin can be connected to VDD33. For an A-Device ID is grounded. For a B-Device ID is floated. 24 RBIAS Analog, CMOS N/A Bias Resistor pin. This pin requires an 8.06kΩ (±1%) resistor to ground, placed as close as possible to the USB3320. Nominal voltage during ULPI operation is 0.8V. 25 XO Output, CMOS N/A External resonator pin. When using an external clock on REFCLK, this pin should be floated. 26 REFCLK Input, CMOS N/A ULPI Output Clock Mode: Reference frequency as defined in Table 5.10. ULPI Input Clock Mode: 60MHz ULPI clock input. 27 RESETB Input, CMOS, Low When low, the part is suspended with all ULPI outputs tri-stated. When high, the USB3320 will operate as a normal ULPI device, as described in Section 5.5.2. The state of this pin may be changed asynchronously to the clock signals. When asserted for a minimum of 1 microsecond and then de-asserted, the ULPI registers are reset to their default state and all internal state machines are reset. 28 VDD18 Power N/A External 1.8V Supply input pin. This pad needs to be bypassed with a 0.1uF capacitor to ground, placed as close as possible to the USB3320. PIN NAME 17 Revision 1.0 (07-14-09) 12 DATASHEET DESCRIPTION SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 2.1 USB3320 Pin Description (continued) DIRECTION/ TYPE ACTIVE LEVEL STP Input, CMOS High The Link asserts STP for one clock cycle to stop the data stream currently on the bus. If the Link is sending data to the transceiver, STP indicates the last byte of data was on the bus in the previous cycle. 30 VDD18 Power N/A External 1.8V Supply input pin. This pad needs to be bypassed with a 0.1uF capacitor to ground, placed as close as possible to the USB3320. 31 DIR Output, CMOS N/A Controls the direction of the data bus. When the transceiver has data to transfer to the Link, it drives DIR high to take ownership of the bus. When the transceiver has no data to transfer it drives DIR low and monitors the bus for commands from the Link. 32 VDDIO Power N/A External 1.8V to 3.3V ULPI supply input pin. This voltage sets the value of VOH for the ULPI signals. This pad needs to be bypassed with a 0.1uF capacitor to ground, placed as close as possible to the USB3320. FLAG GND Ground N/A Ground. PIN NAME 29 SMSC USB3320 13 DATASHEET DESCRIPTION Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 3 Limiting Values 3.1 Absolute Maximum Ratings Table 3.1 Absolute Maximum Ratings PARAMETER SYMBOL VBUS, VBAT, ID, CPEN, DP, DM, SPK_L, and SPK_R voltage to GND VMAX_5V Maximum VDD18 voltage to Ground VMAX_18V Maximum VDDIO voltage to Ground VMAX_IOV Maximum VDDIO voltage to Ground VMAX_IOV Maximum VDD33 voltage to Ground CONDITIONS MIN Voltage measured at pin. VBUS tolerant to 30V with external RVBUS. TYP MAX UNITS -0.5 +6.0 V -0.5 2.5 V VDD18 = VDD18 -0.5 4.0 V VDD18 = 0V -0.5 0.7 V VMAX_33V -0.5 4.0 V Maximum I/O voltage to Ground VMAX_IN -0.5 VDDIO + 0.7 V Operating Temperature TMAX_OP -40 85 °C Storage Temperature TMAX_STG -55 150 °C Note: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 3.2 Recommended Operating Conditions Table 3.2 Recommended Operating Conditions PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V VBAT to GND VVBAT 3.1 VDD33 to GND VDD33 3.0 3.3 3.6 V VDDIO to GND VDDIO 1.6 1.8-3.3 3.6 V VDD18 to GND VDD18 1.6 1.8 2.0 V Input Voltage on Digital Pins (RESETB, STP, DIR, NXT, DATA[7:0]) VI 0.0 VDDIO V Voltage on Analog I/O Pins (DP, DM, ID, CPEN, SPK_L, SPK_R) VI(I/O) 0.0 VDD33 V VBUS to GND VVMAX 0.0 5.5 V Ambient Temperature TA -40 85 °C Revision 1.0 (07-14-09) VDDIO ≥ VDD18 ( min ) 14 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 4 Electrical Characteristics The following conditions are assumed unless otherwise specified: VVBAT = 3.1 to 5.5V; VDD18 = 1.6 to 2.0V; VDDIO = 1.6 to 2.0V; VSS = 0V; TA = -40°C to +85°C The current for 3.3V circuits is sourced at the VBAT pin, except when using an external 3.3V supply as shown in Figure 5.7. 4.1 Operating Current Table 4.1 Electrical Characteristics: Operating Current PARAMETER SYMBOL CONDITIONS Synchronous Mode Current (Default Configuration) I33AVG(SYNC) Start-up sequence defined in Section 5.5.4 has completed. MIN TYP MAX UNITS 7.5 mA 28.0 mA 4.1 mA 11.1 mA I18AVG(HS) 29.4 mA IIOAVG(HS) 5.9 mA 6.3 mA I18AVG(FS) 22.5 mA IIOAVG(FS) 5.0 mA I33AVG(FS_S) 5.6 mA I18AVG(FS_S) 2.4 mA IIOAVG(FS_S) 86 uA USB UART Current I33AVG(UART) 5.6 mA Note 4.1 I18AVG(UART) 2.4 mA IIOAVG(UART) 58 uA 18.8 uA 0.7 uA 30 uA 18 uA 0.6 uA 0.1 uA I18AVG(SYNC) IIOAVG(SYNC) Synchronous Mode Current (HS USB operation) Synchronous Mode Current (FS/LS USB operation) Serial Mode Current (FS/LS USB) Note 4.1 I33AVG(HS) I33AVG(FS) Low Power Mode IDD33(LPM) Note 4.2 IDD18(LPM) Active USB Transfer Active USB Transfer VVBAT = 4.2V VDD18 = 1.8V VDDIO = 1.8V IDDIO(LPM) Standby Mode IDD33(RSTB) IDD18(RSTB) IDDIO(RSTB) RESETB = 0 VVBAT = 4.2V VDD18 = 1.8V VDDIO = 1.8V Note 4.1 ClockSuspendM bit = 0. Note 4.2 SessEnd, VbusVld, and IdFloat comparators disabled. STP Interface protection disabled. SMSC USB3320 15 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 4.2 Clock Specifications Table 4.2 ULPI Clock Specifications PARAMETER SYMBOL Suspend Recovery Time Note 4.3 TSTART CONDITIONS MIN TYP MAX UNITS 26MHz REFCLK 1.03 2.28 ms 12MHz REFCLK 2.24 3.49 ms 52MHz REFCLK 0.52 1.77 ms 24MHz REFCLK 1.12 2.37 ms 19.2MHz REFCLK 1.40 2.65 ms 27MHz REFCLK 1.00 2.25 ms 38.4MHz REFCLK 0.70 1.95 ms 13MHz REFCLK 2.07 3.32 ms 0.45 0.5 ms PHY Preparation Time TPREP 60MHz REFCLK ULPI Input Clock Mode 0.4 CLKOUT Duty Cycle DCCLKOUT ULPI Input Clock Mode 45 55 % REFCLK Duty Cycle DCREFCLK 20 80 % REFCLK Frequency Accuracy FREFCLK -500 +500 Note 4.3 PPM The Suspend Recovery Time is measured from the start of the REFCLK to when the USB3320 de-asserts DIR. Note: The USB3320 uses the AutoResume feature, Section 6.2.4.4, to allow a host start-up time of less than 1ms 4.3 ULPI Interface Timing Table 4.3 ULPI Interface Timing PARAMETER SYMBOL CONDITIONS MIN MAX UNITS Setup time (STP, data in) TSC, TSD Model-specific REFCLK 5.0 ns Hold time (STP, data in) THC, THD Model-specific REFCLK 0.0 ns Output delay (control out, 8-bit data out) TDC, TDD Model-specific REFCLK 1.0 Setup time (STP, data in) TSC, TSD 60MHz REFCLK 1.5 ns Hold time (STP, data in) THC, THD 60MHz REFCLK -0.5 ns Output delay (control out, 8-bit data out) TDC, TDD 60Mhz REFCLK 1.5 60MHz ULPI Output Clock Note 4.4 3.5 ns 60MHz ULPI Input Clock 6.0 ns Note: VDD18 = 1.6 to 2.0V; VSS = 0V; TA = -40°C to +85°C Note 4.4 Revision 1.0 (07-14-09) REFCLK does not need to be aligned in any way to the ULPI signals. 16 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 4.4 Digital IO Pins Table 4.4 Digital IO Characteristics: RESETB, CLKOUT, STP, DIR, NXT, DATA[7:0] & REFCLK Pins PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Low-Level Input Voltage VIL VSS 0.4 * VDDIO V High-Level Input Voltage VIH 0.68 * VDDIO VDDIO V High-Level Input Voltage REFCLK only VIH 0.68 * VDD18 VDD33 V Low-Level Output Voltage VOL IOL = 8mA 0.4 V High-Level Output Voltage VOH IOH = -8mA VDDIO 0.4 V High-Level Output Voltage CPEN Only VOH IOH = -8mA VDD33 - 0.4 V Input Leakage Current ILI Pin Capacitance Cpin STP pull-up resistance RSTP InterfaceProtectDisable = 0 55 DATA[7:0] pull-dn resistance RDATA_PD ULPI Synchronous Mode 55 CLKOUT External Drive VIH_ED At start-up or following reset 4.5 VDD33 - 0.4 ±10 uA 4 pF 67 77 kΩ 67 77 kΩ 0.4 * VDDIO V DC Characteristics: Analog I/O Pins Table 4.5 DC Characteristics: Analog I/O Pins (DP/DM) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LS/FS FUNCTIONALITY Input levels Differential Receiver Input Sensitivity VDIFS Differential Receiver Common-Mode Voltage VCMFS Single-Ended Receiver Low Level Input Voltage VILSE Note 4.6 Single-Ended Receiver High Level Input Voltage VIHSE Note 4.6 Single-Ended Receiver Hysteresis VHYSSE | V(DP) - V(DM) | 0.2 0.8 V 2.5 V 0.8 V 2.0 0.050 V 0.150 V 0.3 V Output Levels Low Level Output Voltage SMSC USB3320 VFSOL Pull-up resistor on DP; RL = 1.5kΩ to VDD33 17 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 4.5 DC Characteristics: Analog I/O Pins (DP/DM) (continued) PARAMETER High Level Output Voltage SYMBOL CONDITIONS MIN TYP MAX UNITS VFSOH Pull-down resistor on DP, DM; Note 4.6 RL = 15kΩ to GND 2.8 3.6 V Driver Output Impedance for HS and FS ZHSDRV Steady state drive 40.5 49.5 Ω Input Impedance ZINP RX, RPU, RPD disabled 1.0 Pull-up Resistor Impedance RPU Bus Idle, Note 4.5 0.900 1.24 1.575 kΩ Pull-up Resistor Impedance RPU Device Receiving, Note 4.5 1.425 2.26 3.09 kΩ Pull-dn Resistor Impedance RPD Note 4.5 14.25 16.9 20 kΩ Weak Pull-up Resistor Impedance RCD Configured by bits 4 and 5 in USB IO & Power Management register. 128 170 212 kΩ HS Differential Input Sensitivity VDIHS | V(DP) - V(DM) | 100 HS Data Signaling Common Mode Voltage Range VCMHS High-Speed Squelch Detection Threshold (Differential Signal Amplitude) VHSSQ Termination 45 MΩ HS FUNCTIONALITY Input levels mV -50 500 mV Note 4.7 100 150 mV Output Levels Hi-Speed Low Level Output Voltage (DP/DM referenced to GND) VHSOL 45Ω load -10 10 mV Hi-Speed High Level Output Voltage (DP/DM referenced to GND) VHSOH 45Ω load 360 440 mV Hi-Speed IDLE Level Output Voltage (DP/DM referenced to GND) VOLHS 45Ω load -10 10 mV Chirp-J Output Voltage (Differential) VCHIRPJ HS termination resistor disabled, pull-up resistor connected. 45Ω load. 700 1100 mV Chirp-K Output Voltage (Differential) VCHIRPK HS termination resistor disabled, pull-up resistor connected. 45Ω load. -900 -500 mV ±10 uA Leakage Current OFF-State Leakage Current Revision 1.0 (07-14-09) ILZ 18 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 4.5 DC Characteristics: Analog I/O Pins (DP/DM) (continued) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Port Capacitance Transceiver Input Capacitance CIN Pin to GND 5 10 pF Note 4.5 The resistor value follows the 27% Resistor ECN published by the USB-IF. Note 4.6 The values shown are valid when the USB RegOutput bits in the USB IO & Power Management register are set to the default value. Note 4.7 An automatic waiver up to 200mV is granted to accommodate system-level elements such as measurement/test fixtures, captive cables, EMI components, and ESD suppression. 4.6 Dynamic Characteristics: Analog I/O Pins Table 4.6 Dynamic Characteristics: Analog I/O Pins (DP/DM) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS FS Output Driver Timing FS Rise Time TFR CL = 50pF; 10 to 90% of |VOH - VOL| 4 20 ns FS Fall Time TFF CL = 50pF; 10 to 90% of |VOH - VOL| 4 20 ns Output Signal Crossover Voltage VCRS Excluding the first transition from IDLE state 1.3 2.0 V Differential Rise/Fall Time Matching TFRFM Excluding the first transition from IDLE state 90 111.1 % LS Rise Time TLR CL = 50-600pF; 10 to 90% of |VOH - VOL| 75 300 ns LS Fall Time TLF CL = 50-600pF; 10 to 90% of |VOH - VOL| 75 300 ns Differential Rise/Fall Time Matching TLRFM Excluding the first transition from IDLE state 80 125 % LS Output Driver Timing HS Output Driver Timing Differential Rise Time THSR 500 ps Differential Fall Time THSF 500 ps Driver Waveform Requirements Eye pattern of Template 1 in USB 2.0 specification Hi-Speed Mode Timing Receiver Waveform Requirements Eye pattern of Template 4 in USB 2.0 specification Data Source Jitter and Receiver Jitter Tolerance Eye pattern of Template 4 in USB 2.0 specification SMSC USB3320 19 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 4.7 OTG Electrical Characteristics Table 4.7 OTG Electrical Characteristics PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SessEnd trip point VSessEnd 0.2 0.5 0.8 V SessVld trip point VSessVld 0.8 1.4 2.0 V VbusVld trip point VVbusVld 4.4 4.58 4.75 V A-Device Impedance RIdGnd 100 kΩ ID Float trip point VIdFloat VBUS Pull-Up RVPU VBUS Pull-down Maximum A device Impedance to ground on ID pin 1.9 2.2 2.5 V VBUS to VDD33 Note 4.8 (ChargeVbus = 1) 1.29 1.34 1.45 kΩ RVPD VBUS to GND Note 4.8 (DisChargeVbus = 1) 1.55 1.7 1.85 kΩ VBUS Impedance RVB VBUS to GND 40 75 100 kΩ ID pull-up resistance RID IdPullup = 1 80 100 120 kΩ ID weak pull-up resistance RIDW IdPullup = 0 1 ID pull-dn resistance RIDPD IdGndDrv = 1 Note 4.8 4.8 MΩ 1000 Ω The RVPD and RVPU values include the required 1kΩ external RVBUS resistor. USB Audio Switch Characteristics Table 4.8 USB Audio Switch Characteristics PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Minimum “ON” Resistance RON_Min 0 < Vswitch < VDD33 2.7 5 5.8 Ω Maximum “ON” Resistance RON_Max 0 < Vswitch < VDD33 4.5 7 10 Ω Minimum “OFF” Resistance ROFF_Min 0 < Vswitch < VDD33 1 Revision 1.0 (07-14-09) 20 DATASHEET MΩ SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 4.9 Regulator Output Voltages and Capacitor Requirement Table 4.9 Regulator Output Voltages and Capacitor Requirement PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Regulator Output Voltage VDD33 6V > VBAT > 3.1V 3.0 3.3 3.6 V Regulator Output Voltage VDD33 USB UART Mode & UART RegOutput[1:0] = 01 6V > VBAT > 3.1V 2.7 3.0 3.3 V Regulator Output Voltage VDD33 USB UART Mode & UART RegOutput[1:0] = 10 6V > VBAT > 3.1V 2.47 2.75 3.03 V Regulator Output Voltage VDD33 USB UART Mode & UART RegOutput[1:0] = 11 6V > VBAT > 3.1V 2.25 2.5 2.75 V Regulator Bypass Capacitor COUT Bypass Capacitor ESR CESR 2.2 uF 1 Ω Table 4.10 ESD and LATCH-UP Performance PARAMETER CONDITIONS MIN TYP MAX UNITS COMMENTS ESD PERFORMANCE Note 4.9 Human Body Model ±8 kV Device System EN/IEC 61000-4-2 Contact Discharge ±8 kV 3rd party system test System EN/IEC 61000-4-2 Air-gap Discharge ±15 kV 3rd party system test LATCH-UP PERFORMANCE All Pins EIA/JESD 78, Class II Note 4.9 SMSC USB3320 150 mA REFCLK, XO, SPK_L and SPK_R pins: ±5kV Human Body Model. 21 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 4.10 Piezoelectric Resonator for Internal Oscillator The internal oscillator may be used with an external quartz crystal or ceramic resonator as described in Section 5.4.1.2. See Table 4.11 for the recommended crystal specifications. See Table 4.12 for the ceramic resonator part numbers for commercial temperature applications. At this time, the ceramic resonator does not offer sufficient temperature stability to operate over the industrial temperature range. Table 4.11 USB3320 Quartz Crystal Specifications PARAMETER SYMBOL MIN NOM Crystal Cut MAX UNITS NOTES AT, typ Crystal Oscillation Mode Fundamental Mode Crystal Calibration Mode Parallel Resonant Mode Frequency Ffund Total Allowable PPM Budget - Table 5.10 - MHz - - ±500 PPM Note 4.10 Shunt Capacitance CO - 7 typ - pF Load Capacitance CL - 20 typ - pF Drive Level PW 0.5 - - mW Equivalent Series Resistance R1 - - 30 Ohm Note 4.11 - Note 4.12 oC USB3320 REFCLK Pin Capacitance - 3 typ - pF Note 4.13 USB3320 XO Pin Capacitance - 3 typ - pF Note 4.13 Operating Temperature Range Note 4.10 The required bit rate accuracy for Hi-Speed USB applications is ±500 ppm as provided in the USB 2.0 Specification. This takes into account the effect of voltage, temperature, aging, etc. Note 4.11 0oC for commercial applications, -40oC for industrial applications. Note 4.12 +70oC for commercial applications, +85oC for industrial applications. Note 4.13 This number includes the pad, the bond wire and the lead frame. Printed Circuit Board (PCB) capacitance is not included in this value. The PCB capacitance value and the capacitance value of the XO and REFCLK pins are required to accurately calculate the value of the two external load capacitors. Table 4.12 USB3320 Ceramic Resonator Part Numbers FREQUENCY MURATA PART NUMBER NOTES 24 MHz CSTCE24M0XK1***-R0 Commercial Temp Only, Note 4.14 26 MHz CSTCE26M0XK1***-R0 Commercial Temp Only, Note 4.14 Note 4.14 This is a generic part number assigned by Murata. The oscillating frequency is affected by stray capacitance on the Printed Circuit Board (PCB). Murata will assign the final part number for each customer’s PCB after characterizing the customer’s PCB design. Revision 1.0 (07-14-09) 22 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 5 Architecture Overview The USB3320 consists of the blocks shown in the diagram below. All pull-up resistors shown in this diagram are connected internally to the VDD33 pin. DrvVbus or’d with DrvVbusExternal DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 STP NXT DIR CLKOUT RESETB VDDIO VDD18 VDD33 CPEN RID VDD33 SessEnd VbusValid TX Data RVB LDO RVPD SessValid RPU RPU RCD VDD33 RCD VDD33 ESD Protection VBAT RVPU OVP VBUS ULPI Digitial RX Data Rid Value TX DP Digital IO IdFloat ID OTG Module RIDW IdGnd HS/FS/LS TX Encoding REFCLK XO REFSEL0 REFSEL1 REFSEL2 Integrated Low Jitter PLL SPK_L RPD RPD DM RX HS/FS/LS RX Decoding BIAS RBIAS SPK_R Figure 5.1 USB3320 Internal Block Diagram 5.1 ULPI Digital Operation and Interface This section of the USB3320 is covered in detail in Chapter 6, ULPI Operation. 5.2 USB 2.0 Hi-Speed Transceiver The blocks in the lower left-hand corner of Figure 5.1 interface to the DP/DM pins. 5.2.1 USB Transceiver The USB3320 includes the receivers and transmitters that are compliant to the Universal Serial Bus Specification Rev 2.0. The DP/DM signals in the USB cable connect directly to the receivers and transmitters. The RX block consists of a differential receiver for HS and separate receivers for FS/LS mode. Depending on the mode, the selected receiver provides the serial data stream through the multiplexer to the RX Logic block. For HS mode support, the HS RX block contains a squelch circuit to insure that noise is not interpreted as data. The RX block also includes a single-ended receiver on each of the data lines to determine the correct FS linestate. Data from the TX Logic block is encoded, bit stuffed, serialized and transmitted onto the USB cable by the TX block. Separate differential FS/LS and HS transmitters are included to support all modes. The USB3320 TX block meets the HS signalling level requirements in the USB 2.0 Specification when the PCB traces from the DP and DM pins to the USB connector have very little loss. In some systems, SMSC USB3320 23 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet it may be desirable to compensate for loss by adjusting the HS transmitter amplitude. The Boost bits in the HS TX Boost register may be configured to adjust the HS transmitter amplitude at the DP and DM pins. 5.2.2 Termination Resistors The USB3320 transceiver fully integrates all of the USB termination resistors on both DP and DM. This includes 1.5kΩ pull-up resistors, 15kΩ pull-down resistors and the 45Ω high speed termination resistors. These resistors require no tuning or trimming by the Link. The state of the resistors is determined by the operating mode of the transceiver when operating in synchronous mode. The XcvrSelect[1:0], TermSelect and OpMode[1:0] bits in the Function Control register, and the DpPulldown and DmPulldown bits in the OTG Control register control the configuration. The possible valid resistor combinations are shown in Table 5.1, and operation is guaranteed in only the configurations shown. If a ULPI Register Setting is configured that does not match a setting in the table, the transceiver operation is not guaranteed and the settings in the last row of Table 5.1 will be used. RPU_DP_EN activates the 1.5kΩ DP pull-up resistor RPU_DM_EN activates the 1.5kΩ DM pull-up resistor RPD_DP_EN activates the 15kΩ DP pull-down resistor RPD_DM_EN activates the 15kΩ DM pull-down resistor HSTERM_EN activates the 45Ω DP and DM high speed termination resistors The USB3320 also includes two DP and DM pull-up resistors described in Section 5.8. Table 5.1 DP/DM Termination vs. Signaling Mode TERMSELECT OPMODE[1:0] DPPULLDOWN DMPULLDOWN RPU_DP_EN RPU_DM_EN RPD_DP_EN RPD_DM_EN HSTERM_EN USB3320 TERMINATION RESISTOR SETTINGS XCVRSELECT[1:0] ULPI REGISTER SETTINGS Tri-State Drivers XXb Xb 01b Xb Xb 0b 0b 0b 0b 0b Power-up or VBUS < VSESSEND 01b 0b 00b 1b 1b 0b 0b 1b 1b 0b Host Chirp 00b 0b 10b 1b 1b 0b 0b 1b 1b 1b Host Hi-Speed 00b 0b 00b 1b 1b 0b 0b 1b 1b 1b Host Full Speed X1b 1b 00b 1b 1b 0b 0b 1b 1b 0b Host HS/FS Suspend 01b 1b 00b 1b 1b 0b 0b 1b 1b 0b Host HS/FS Resume 01b 1b 10b 1b 1b 0b 0b 1b 1b 0b Host low Speed 10b 1b 00b 1b 1b 0b 0b 1b 1b 0b Host LS Suspend 10b 1b 00b 1b 1b 0b 0b 1b 1b 0b SIGNALING MODE General Settings Host Settings Revision 1.0 (07-14-09) 24 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 5.1 DP/DM Termination vs. Signaling Mode (continued) TERMSELECT OPMODE[1:0] DPPULLDOWN DMPULLDOWN RPU_DP_EN RPU_DM_EN RPD_DP_EN RPD_DM_EN HSTERM_EN USB3320 TERMINATION RESISTOR SETTINGS XCVRSELECT[1:0] ULPI REGISTER SETTINGS Host LS Resume 10b 1b 10b 1b 1b 0b 0b 1b 1b 0b Host Test J/Test_K 00b 0b 10b 1b 1b 0b 0b 1b 1b 1b Peripheral Chirp 00b 1b 10b 0b 0b 1b 0b 0b 0b 0b Peripheral HS 00b 0b 00b 0b 0b 0b 0b 0b 0b 1b Peripheral FS 01b 1b 00b 0b 0b 1b 0b 0b 0b 0b Peripheral HS/FS Suspend 01b 1b 00b 0b 0b 1b 0b 0b 0b 0b Peripheral HS/FS Resume 01b 1b 10b 0b 0b 1b 0b 0b 0b 0b Peripheral LS 10b 1b 00b 0b 0b 0b 1b 0b 0b 0b Peripheral LS Suspend 10b 1b 00b 0b 0b 0b 1b 0b 0b 0b Peripheral LS Resume 10b 1b 10b 0b 0b 0b 1b 0b 0b 0b Peripheral Test J/Test K 00b 0b 10b 0b 0b 0b 0b 0b 0b 1b OTG device, Peripheral Chirp 00b 1b 10b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral HS 00b 0b 00b 0b 1b 0b 0b 0b 1b 1b OTG device, Peripheral FS 01b 1b 00b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral HS/FS Suspend 01b 1b 00b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral HS/FS Resume 01b 1b 10b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral Test J/Test K 00b 0b 10b 0b 1b 0b 0b 0b 1b 1b 0b 0b 0b 0b 0b SIGNALING MODE Peripheral Settings Any combination not defined above Note 5.1 Note: This is the same as Table 40, Section 4.4 of the ULPI 1.1 specification. Note: USB3320 does not support operation as an upstream hub port. See Section 6.2.4.3, "UTMI+ Level 3". Note 5.1 The transceiver operation is not guaranteed in a combination that is not defined. The USB3320 uses the 27% resistor ECN resistor tolerances. The resistor values are shown in Table 4.5. SMSC USB3320 25 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 5.3 Bias Generator This block consists of an internal bandgap reference circuit used for generating the driver current and the biasing of the analog circuits. This block requires an external 8.06KΩ, 1% tolerance, reference resistor connected from RBIAS to ground. This resistor should be placed as close as possible to the USB3320 to minimize the trace length. The nominal voltage at RBIAS is 0.8V +/- 10% and therefore the resistor will dissipate approximately 80μW of power. 5.4 Integrated Low Jitter PLL The USB3320 uses an integrated low jitter phase locked loop (PLL) to provide a clean 480MHz clock required for HS USB signal quality. This clock is used by the transceiver during both transmit and receive. The USB3320 PLL requires an accurate frequency reference to be driven on the REFCLK pin. 5.4.1 REFCLK Mode Selection The USB3320 is designed to operate in one of two available modes as shown in Table 5.2. In the first mode, a 60MHz ULPI clock is driven on the REFCLK pin as described in Section 5.4.1.1. In the second mode, the USB3320 generates the ULPI clock as described in Section 5.4.1.2. When using the second mode, the frequency of the reference clock is configured by REFSEL[2], REFSEL[1] and REFSEL[0] as described in Section 5.10. Table 5.2 REFCLK Modes REFCLK FREQUENCY ULPI CLOCK DESCRIPTION ULPI Input Clock Mode 60Mhz Sourced by Link, driven on the REFCLK pin ULPI Output Clock Mode Table 5.10 Sourced by USB3320 at the CLKOUT pin MODE During start-up, the USB3320 monitors the CLKOUT pin to determine which mode has been configured as described in Section 5.4.1.1. The system must not drive voltage on the CLKOUT pin following POR or hardware reset that exceeds the value of VIH_ED provided in Table 4.4. 5.4.1.1 ULPI Input Clock Mode (60MHz REFCLK Mode) When using ULPI Input Clock Mode, the Link must supply the 60MHz ULPI clock to the USB3320. As shown in Figure 5.2, the 60MHz ULPI Clock is connected to the REFCLK pin, and the CLKOUT pin is tied high to VDDIO. A simplified schematic using the ULPI Input Clock Mode is shown in Figure 8.2. After the PLL has locked to the correct frequency, the USB3320 will de-assert DIR and the Link can begin using the ULPI interface. The USB3320 is guaranteed to start the clock within the time specified in Table 4.2. For Host applications, the ULPI AutoResume bit should be enabled. This is described in Section 6.2.4.4. REFSEL[2], REFSEL[1] and REFSEL[0] should all be tied to VDDIO for ULPI Input Clock Mode. Revision 1.0 (07-14-09) 26 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet ~~ VDDIO CLKOUT REFCLK ULPI Clk Out To PLL Link Reference Clk In ~~ Clock Source SMSC PHY Figure 5.2 Configuring the USB332X for ULPI Input Clock Mode (60 MHz) 5.4.1.2 ULPI Output Clock When using ULPI Output Clock Mode, the USB3320 generates the 60MHz ULPI clock used by the Link. The frequency of the reference clock is configured by REFSEL[2], REFSEL[1] and REFSEL[0] as described in Table 5.10. As shown in Figure 5.3, the CLKOUT pin sources the 60MHz ULPI clock to the Link. ~~ ULPI Clk In CLKOUT From PLL Link Clock Source REFCLK To PLL SMSC PHY ~~ Figure 5.3 Configuring the USB332X for ULPI Output Clock Mode In this mode, the REFCLK pin may be driven at the reference clock frequency. Alternatively, the internal oscillator may be used with an external crystal or resonator as shown in Figure 5.4. An example of ULPI Output Clock Mode is shown in Figure 8.1. SMSC USB3320 27 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet ~~ Link ULPI Clk In CLKOUT From PLL REFCLK Internal Oscillator To PLL Resonator XO - or Crystal and Caps SMSC PHY ~~ C LOAD Figure 5.4 ULPI Output Clock Mode After the PLL has locked to the correct frequency, the USB3320 generates the 60MHz ULPI clock on the CLKOUT pin, and de-asserts DIR to indicate that the PLL is locked. The USB3320 is guaranteed to start the clock within the time specified in Table 4.2, and it will be accurate to within ±500ppm. For Host applications the ULPI AutoResume bit should be enabled. This is described in Section 6.2.4.4. When using ULPI Output Clock Mode, the edges of the reference clock do not need to be aligned in any way to the ULPI interface signals; in other words, there is no need to align the phase of the REFCLK and the CLKOUT. 5.4.2 REFCLK Amplitude The reference clock is connected to the REFCLK pin as shown in the application diagrams, Figure 8.1, Figure 8.2 and Figure 8.3. The REFCLK pin is designed to be driven with a square wave from 0V to VDD18, but can be driven with a square wave from 0V to as high as 3.6V. The USB3320 uses only the positive edge of the REFCLK. If a digital reference is not available, the REFCLK pin can be driven by an analog sine wave that is AC coupled into the REFCLK pin. If using an analog clock, the DC bias should be set at the mid-point of the VDD18 supply using a bias circuit as shown in Figure 5.5. The amplitude must be greater than 300mV peak to peak. The component values provided in Figure 5.5 are for example only. The actual values should be selected to satisfy system requirements. The REFCLK amplitude must comply with the signal amplitudes shown in Table 4.4 and the duty cycle in Table 4.2. 47k VDD18 To REFCLK pin 0.1uF 47k Clock Figure 5.5 Example of Circuit Used to Shift a Reference Clock Common-mode Voltage Level Revision 1.0 (07-14-09) 28 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 5.4.3 REFCLK Jitter The USB3320 is tolerant to jitter on the reference clock. The REFCLK jitter should be limited to a peak to peak jitter of less than 1nS over a 10uS time interval. If this level of jitter is exceeded when configured for either ULPI Input Clock Mode or ULPI Output Clock Mode, the USB3320 Hi-Speed eye diagram may be degraded. The frequency accuracy of the REFCLK must meet the +/- 500ppm requirement as shown in Table 4.2. 5.4.4 REFCLK Enable/Disable The REFCLK should be enabled when the RESETB pin is brought high. The ULPI interface will start running after the time specified in Table 4.2. If the REFCLK enable is delayed relative to the RESETB pin, the ULPI interface will start operation delayed by the same amount. The REFCLK can be run at anytime the RESETB pin is low without causing the USB3320 to start-up or draw current. When the USB3320 is placed in Low Power Mode or Carkit Mode, the REFCLK can be stopped after the final ULPI register write is complete. The STP pin is asserted to bring the USB3320 out of Low Power Mode. The REFCLK should be started at the same time STP is asserted to minimize the USB3320 start-up time. If the REFCLK is stopped while CLKOUT is running, the PLL will come out of lock and the frequency of the CLKOUT signal will decrease to the minimum allowed by the PLL design. If the REFCLK is stopped during a USB session, the session may drop. 5.5 Internal Regulators and POR The USB3320 includes integrated power management functions, including a Low-Dropout regulator that can be used to generate the 3.3V USB supply, and a POR generator described in Section 5.5.2. 5.5.1 Integrated Low Dropout Regulator The USB3320 has an integrated linear regulator. Power sourced at the VBAT pin is regulated to 3.3V and the regulator output is on the VDD33 pin. To ensure stability, the regulator requires an external bypass capacitor (COUT) as specified in Table 4.9 placed as close to the pin as possible. The USB3320 regulator is designed to generate a 3.3 volt supply for the USB3320 only. Using the regulator to provide current for other circuits is not recommended and SMSC does not guarantee USB performance or regulator stability. During USB UART mode the regulator output voltage can be changed to allow the USB3320 to work with UARTs operating at different operating voltages. The regulator output is configured to the voltages shown in Table 4.9 with the UART RegOutput[1:0] bits in the USB IO & Power Management register. The USB3320 regulator can be powered in the three methods as shown below. For USB Peripheral, Host, and OTG operations the regulator can be connected as shown in Figure 5.6 or Figure 5.7 below. For OTG operation, the VDD33 supply on the USB3320 must be powered to detect devices attaching to the USB connector and detect a SRP during an OTG session. When using a battery to supply the USB3320, the battery voltage must be within the range of 3.1V to 5.5V. SMSC USB3320 29 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet . ~~ VBUS RVBUS VBUS To USB Con. To OTG VBAT VDD33 COUT LDO GND SMSC PHY ~~ Figure 5.6 Powering the USB3320 from a Battery The USB3320 can be powered from an external 3.3V supply as shown below in Figure 5.7. When using the external supply, both the VBAT and VDD33 pins are connected together. The bypass capacitor, CBYP, is recommended when using the external supply. ~~ VBUS RVBUS VBUS To USB Con. Vdd 3.3V To OTG VBAT VDD33 CBYP LDO GND SMSC PHY ~~ Figure 5.7 Powering the USB3320 from a 3.3V Supply Revision 1.0 (07-14-09) 30 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet For peripheral only or host only operation, the VBAT supply shown below in Figure 5.8 may be connected to the VBUS pin of the USB connector for bus powered applications. In this configuration, external overvoltage protection is required to protect the VBAT supply from any transient voltage present at the VBUS pin of the USB connector. The VBAT input must never be exposed to a voltage that exceeds VVBAT. (See Table 3.2) ~~ VBUS RVBUS VBUS To USB Con. To OTG VBAT OVP VDD33 COUT LDO GND SMSC PHY ~~ Figure 5.8 Powering the USB3320 from VBUS 5.5.2 Power On Reset (POR) The USB3320 provides a POR circuit that generates an internal reset pulse after the VDD18 supply is stable. After the internal POR goes high and the RESETB pin is high, the USB3320 will release from reset and begin normal ULPI operation as described in Section 5.5.4. The ULPI registers will power up in their default state summarized in Table 7.1 when the 1.8V supply is brought up. Cycling the 1.8 volt power supply will reset the ULPI registers to their default states. The RESETB pin can also be used to reset the ULPI registers to their default state (and reset all internal state machines) by bringing the pin low for a minimum of 1 microsecond and then high. The Link is not required to assert the RESETB pin. A pull-down resistor is not present on the RESETB pin and therefore the Link must drive the RESETB pin to the desired state at all times (including system start-up) or connect the RESETB pin to VDDIO. 5.5.3 Recommended Power Supply Sequence For USB operation the USB3320 requires the VBAT, VDD33, VDDIO and VDD18 supples. VBAT, VDD33, and VDD18 can be applied in any order. The VDD18 supply must be turned on and stable before the VDDIO supply is applied. This does not apply in cases where the VDD18 and VDDIO supply pins are tied together. When the VBAT supply is applied, the integrated regulator will automatically start-up and regulate VBAT to VDD33. If the VDD33 supply is powered and the VDD18 supply is not powered, the 3.3V circuits are powered off and the VDD33 current will be limited as shown in Table 4.1. The ULPI interface will start operating after the VDD18 and VDDIO supplies are applied and the RESETB pin is brought high. The RESETB pin must be held low until the VDD18 and VDDIO supplies are stable. If the Link is not ready to interface the USB3320, the Link may choose to hold the RESETB pin low until it is ready to control the ULPI interface. SMSC USB3320 31 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 5.3 Operating Mode vs. Power Supply Configuration VDD33 VDD18 RESETB OPERATING MODES AVAILABLE 0 0 0 Powered Off 0 1 0 RESET Mode. 0 1 1 In this configuration the ULPI interface is available and can be programed into all operating modes described in Chapter 6. All USB signals will read 0. 1 0 X In this mode the ULPI interface is not active and the circuits powered from the VDD33 supply are turned off and the current will be limited to the RESET Mode current. (Note 5.2) 1 1 0 RESET Mode 1 1 1 Full USB operation as described in Chapter 6. Note: Anytime VBAT is powered per Table 3.2, the VDD33 pin will be powered up. Note 5.2 5.5.4 VDDIO must be powered to tri-state the ULPI interface in this configuration. Start-Up The power on default state of the USB3320 is ULPI Synchronous mode. The USB3320 requires the following conditions to begin operation: the power supplies must be stable, the REFCLK must be present and the RESETB pin must be high. After these conditions are met, the USB3320 will begin ULPI operation that is described in Chapter 6. Figure 5.9 below shows a timing diagram to illustrate the start-up of the USB3320. At T0, the supplies are stable and the USB3320 is held in reset mode. At T1, the Link drives RESETB high after the REFCLK has started. The RESETB pin may be brought high asynchronously to REFCLK. At this point the USB3320 will drive idle on the data bus and assert DIR until the internal PLL has locked. After the PLL has locked, the USB3320 will check that the Link has de-asserted STP and at T2 it will de-assert DIR and begin ULPI operation. The ULPI bus will be available as shown in Figure 5.9 in the time defined as TSTART given in Table 4.2. If the REFCLK signal starts after the RESETB pin is brought high, then time T0 will begin when REFCLK starts. TSTART also assumes that the Link has de-asserted STP. If the Link has held STP high the USB3320 will hold DIR high until STP is de-asserted. When the LINK de-asserts STP, it must drive a ULPI IDLE one cycle after DIR de-asserts. Revision 1.0 (07-14-09) 32 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet T0 SUPPLIES STABLE T1 T2 REFCLK REFCLK valid RESETB DATA[7:0] PHY Tri-States PHY Drives Idle DIR PHY Tri-States PHY Drives High STP IDLE RXCMD IDLE LINK Drives Low TSTART Figure 5.9 ULPI Start-up Timing 5.6 USB On-The-Go (OTG) The USB3320 provides full support for USB OTG protocol. OTG allows the USB3320 to be dynamically configured as a host or device depending on the type of cable inserted into the receptacle. When the Micro-A plug of a cable is inserted into the Micro-AB receptacle, the USB device becomes the Adevice. When a Micro-B plug is inserted, the device becomes the B-device. The OTG A-device behaves similar to a Host while the B-device behaves similar to a peripheral. The differences are covered in the “On-The-Go Supplement to the USB 2.0 Specification”. In applications where only Host or Device is required, the OTG Module is unused. 5.6.1 ID Resistor Detection The ID pin of the USB connector is monitored by the ID pin of the USB3320 to detect the attachment of different types of USB devices and cables. For device only applications that do not use the ID signal the ID pin should be connected to VDD33. The block diagram of the ID detection circuitry is shown in Figure 5.10 and the related parameters are given in Table 4.7. SMSC USB3320 33 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet ~~ VDD33 ID To USB Con. RID=100K RIDW>1M IdPullup IdGnd Vref IdGnd en IdGndDrv IdGnd Rise or IdGnd Fall IdFloat Vref IdFloat en Rid ADC IdFloatRise or IdFloatFall RidValue OTG Module ~~ Figure 5.10 USB3320 ID Resistor Detection Circuitry 5.6.1.1 USB OTG Operation The USB3320 can detect ID grounded and ID floating to determine if an A or B cable has been inserted. The A plug will ground the ID pin while the B plug will float the ID pin. These are the only two valid states allowed in the OTG Protocol. To monitor the status of the ID pin, the Link activates the IdPullup bit in the OTG Control register, waits 50mS and then reads the status of the IdGnd bit in the USB Interrupt Status register. If an A cable has been inserted the IdGnd bit will read 0. If a B cable is inserted, the ID pin is floating and the IdGnd bit will read 1. The USB3320 provides an integrated weak pull-up resistor on the ID pin, RIDW. This resistor is present to keep the ID pin in a known state when the IdPullup bit is disabled and the ID pin is floated. In addition to keeping the ID pin in a known state, it enables the USB3320 to generate an interrupt to inform the link when a cable with a resistor to ground has been attached to the ID pin. The weak pullup is small enough that the largest valid Rid resistor pulls the ID pin low and causes the IdGnd comparator to go low. After the link has detected an ID pin state change, the RID converter can be used to determine the resistor value as described in Section 5.6.1.2. 5.6.1.2 Measuring ID Resistance to Ground The Link can used the integrated resistance measurement capabilities to determine the value of an ID resistance to ground. Table 5.4 lists the valid values of resistance, to ground, that the USB3320 can detect. Revision 1.0 (07-14-09) 34 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 5.4 Valid Values of ID Resistance to Ground ID RESISTANCE TO GROUND RID VALUE Ground 000 75Ω +/-1% 001 102kΩ +/-1% 010 200kΩ+/-1% 011 440kΩ +/-1% 100 Floating 101 Note: IdPullUp = 0 The Rid resistance can be read while the USB3320 is in Synchronous Mode. When a resistor to ground is attached to the ID pin, the state of the IdGnd comparator will change. After the Link has detected ID transition to ground, it can use the methods described in Section 6.6 to operate the Rid converter. 5.6.1.3 Using IdFloat Comparator Note: The ULPI specification details a method to detect a 102kΩ resistance to ground using the IdFloat comparator. This method can only detect 0ohms, 102kΩ, and floating terminations of the ID pin. Due to this limitation it is recommended to use the RID Converter as described in Section 5.6.1.2. The ID pin can be either grounded, floated, or connected to ground with a 102kΩ external resistor. To detect the 102K resistor, set the idPullup bit in the OTG Control register, causing the USB3320 to apply the 100K internal pull-up connected between the ID pin and VDD33. Set the idFloatRise and idFloatFall bits in both the USB Interrupt Enable Rising and USB Interrupt Enable Falling registers to enable the IdFloat comparator to generate an RXCMD to the Link when the state of the IdFloat changes. As described in Figure 6.3, the alt_int bit of the RXCMD will be set. The values of IdGnd and IdFloat are shown for the three types cables that can attach to the USB Connector in Table 5.5. Table 5.5 IdGnd and IdFloat vs. ID Resistance to Ground ID RESISTANCE IDGND IDFLOAT Float 1 1 102K 1 0 GND 0 0 Note: The ULPI register bits IdPullUp, IdFloatRise, and IdFloatFall should be enabled. To save current when an A Plug is inserted, the internal 102kΩ pull-up resistor can be disabled by clearing the IdPullUp bit in the OTG Control register and the IdFloatRise and IdFloatFall bits in both the USB Interrupt Enable Rising and USB Interrupt Enable Falling registers. If the cable is removed the weak RIDW will pull the ID pin high. The IdGnd value can be read using the ULPI USB Interrupt Status register, bit 4. In host mode, it can be set to generate an interrupt when IdGnd changes by setting the appropriate bits in the USB Interrupt Enable Rising and USB Interrupt Enable Falling registers. The IdFloat value can be read by reading the ULPI Carkit Interrupt Status register bit 0. SMSC USB3320 35 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Note: The IdGnd switch has been provided to ground the ID pin for future applications. 5.6.2 VBUS Monitor and Pulsing The USB3320 includes all of the VBUS comparators required for OTG. The VBUSVld, SessVld, and SessEnd comparators shown in Figure 5.11 are fully integrated into the USB3320. These comparators are used to monitor changes in the VBUS voltage, and the state of each comparator can be read from the USB Interrupt Status register. The VbusVld comparator is used by the Link, when configured as an A device, to ensure that the VBUS voltage on the cable is valid. The SessVld comparator is used by the Link when configured as both an A or B device to indicate a session is requested or valid. Finally the SessEnd comparator is used by the B-device to indicate a USB session has ended. Also included in the VBUS Monitor and Pulsing block are the resistors used for VBUS pulsing in SRP. The resistors used for VBUS pulsing include a pull-down to ground and a pull-up to VDD33. In some applications, voltages much greater than 5.5V may be present at the VBUS pin of the USB connector. The USB3320 includes an overvoltage protection circuit that protects the VBUS pin of the USB3320 from excessive voltages as described in Section 5.6.2.6, and shown in Figure 5.11. ~~ VDD33 ChrgVbus 0.5V SessEnd RVPU en RVPD RVBUS 1.4V RVB To USB Con. SessValid VBUS Overvoltage Protection VBUS SessEnd Rise or SessEnd Fall VbusValid 4.575V DischrgVbus en VbusValid Rise or VbusValid Fall [0, X] [1, 0] EXTVBUS (logic 1) IndicatorComplement RXCMD VbusValid [1, 1] [UseExternalVbusindicator, IndicatorPassThru] SMSC PHY ~~ Figure 5.11 USB3320 OTG VBUS Block 5.6.2.1 SessEnd Comparator The SessEnd comparator is designed to trip when VBUS is less than 0.5 volts. When VBUS goes below 0.5 volts the USB session is considered to be ended, and SessEnd will transition from 0 to 1. The SessEnd comparator can be disabled by clearing this bit in both the USB Interrupt Enable Rising and USB Interrupt Enable Falling registers. When disabled, the SessEnd bit in the USB Interrupt Status register will read 0. The SessEnd comparator trip points are detailed in Table 4.7. Revision 1.0 (07-14-09) 36 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 5.6.2.2 SessVld Comparator The SessVld comparator is used when the transceiver is configured as both an A and B device. When configured as an A device, the SessVld is used to detect Session Request protocol (SRP). When configured as a B device, SessVld is used to detect the presence of VBUS. The SessVld interrupts can be disabled by clearing this bit in both the USB Interrupt Enable Rising and USB Interrupt Enable Falling registers. When the interrupts are disabled, the SessVld comparator is not disabled and its state can be read in the USB Interrupt Status register. The SessVld comparator trip point is detailed in Table 4.7. Note: The OTG Supplement specifies a voltage range for A-Device Session Valid and B-Device Session Valid comparator. The USB3320 transceiver combines the two comparators into one and uses the narrower threshold range. 5.6.2.3 VbusVld Comparator The final VBUS comparator is the VbusVld comparator. This comparator is only used when the USB3320 is configured as an A-device. In the USB protocol the A-device supplies the VBUS voltage and is responsible to ensure it remains within a specified voltage range. The VbusVld comparator can be disabled by clearing this bit in both the USB Interrupt Enable Rising and USB Interrupt Enable Falling registers. When disabled, bit 1 of the USB Interrupt Status register will return a 0. The VbusVld comparator trip points are detailed in Table 4.7. The internal VbusValid comparator is designed to ensure the VBUS voltage remains above 4.4V. The USB3320 includes the external vbus valid indicator logic as detail in the ULPI Specification. The external vbus valid indicator is tied to a logic one. The decoding of this logic is shown in Table 5.6 below. By default this logic is disabled. Table 5.6 External VBUS Indicator Logic TYPICAL APPLICATION USE EXTERNAL VBUS INDICATOR INDICATOR PASS THRU INDICATOR COMPLEMENT OTG Device 0 X X Internal VbusVld comparator (Default) 1 1 0 Fixed 1 1 1 1 Fixed 0 1 0 0 Internal VbusVld comparator. 1 0 1 Fixed 0 1 1 0 Fixed 1 1 1 1 Fixed 0 0 X X Internal VbusVld comparator. This information should not be used by the Link. (Note 5.3) Standard Host Standard Peripheral Note 5.3 SMSC USB3320 RXCMD VBUS VALID ENCODING SOURCE A peripheral should not use VbusVld to begin operation. The peripheral should use SessVld because the internal VbusVld threshold can be above the VBUS voltage required for USB peripheral operation. 37 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 5.6.2.4 VBUS Pulsing with Pull-up and Pull-down Resistors In addition to the internal VBUS comparators, the USB3320 also includes the integrated VBUS pull-up and pull-down resistors used for VBUS Pulsing during OTG Session Request Protocol. To discharge the VBUS voltage so that a Session Request can begin, the USB3320 provides a pull-down resistor from VBUS to Ground. This resistor is controlled by the DischargeVbus bit 3 of the OTG Control register. The pull-up resistor is connected between VBUS and VDD33. This resistor is used to pull VBUS above 2.1 volts so that the A-Device knows that a USB session has been requested. The state of the pull-up resistor is controlled by the bit 4 ChargeVbus of the OTG Control register. The Pull-Up and Pull-Down resistor values are detailed in Table 4.7. The internal VBUS Pull-up and Pull-down resistors are designed to include the RVBUS external resistor in series. This external resistor is used by the VBUS Overvoltage protection described below. 5.6.2.5 VBUS Input Impedance The OTG Supplement requires an A-Device that supports Session Request Protocol to have a VBUS input impedance less than 100kΩ and greater the 40kΩ to ground. The USB3320 provides a 75kΩ resistance to ground, RVB. The RVB resistor tolerance is detailed in Table 4.7. 5.6.2.6 VBUS Overvoltage Protection The USB3320 provides an integrated overvoltage protection circuit to protect the VBUS pin from excessive voltages that may be present at the USB connector. The overvoltage protection circuit works with an external resistor (RVBUS) by drawing current across the resistor to reduce the voltage at the VBUS pin. When voltage at the VBUS pin exceeds 5.5V, the Overvoltage Protection block will sink current to ground until VBUS is below 5.5V. The current drops the excess voltage across RVBUS and protects the USB3320 VBUS pin. The required RVBUS value is dependent on the operating mode of the USB3320 as shown in Table 5.7. Table 5.7 Required RVBUS Resistor Value OPERATING MODE RVBUS Device only 10kΩ ±5% OTG Capable 1kΩ ±5% Host UseExternalVbusIndicator = 1 10kΩ ±5% The Overvoltage Protection circuit is designed to protect the USB3320 from continuous voltages up to 30V on the RVBUS resistor. The RVBUS resistor must be sized to handle the power dissipated across the resistor. The resistor power can be found using the equation below: 2 ( Vprotect – 5.0 ) P RVBUS = -------------------------------------------R VBUS Where: Revision 1.0 (07-14-09) Vprotect is the VBUS protection required RVBUS is the resistor value, 1kΩ or 10kΩ. PRVBUS is the required power rating of RVBUS 38 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet For example, protecting a peripheral or device only application to 15V would require a 10kΩ RVBUS resistor with a power rating of 0.01W. To protect an OTG product to 15V would require a 1kΩ RVBUS resistor with a power rating of 0.1W. 5.6.3 Driving External VBUS The USB3320 monitors VBUS as described in VBUS Monitor and Pulsing. For OTG and Host applications, the system is required to source 5 volts on VBUS. The USB3320 fully supports VBUS power control using an external VBUS switch as shown in Figure 8.3. The USB3320 provides an active high control signal, CPEN, that is dedicated to controlling the Vbus supply when configured as an ADevice. CPEN is asserted by setting the DrvVbus or DrvVbusExternal bit of the OTG Control register. To be compatible with Link designs that support both internal and external Vbus supplies the DrvVbus and DrvVbusExternal bits in the OTG Control Register are or’d together. This enables the Link to set either bit to access the external Vbus enable (CPEN). This logic is shown in Figure 5.12. DrvVbus and DrvVbusExternal are set to 0 on Power On Reset (POR) as shown in Section 7.1.1.7. USB Transceiver CPEN VBUS Switch EN 5V IN +5V VBUS Supply RVBUS OUT Link Controller DrvVbus DrvVbusExternal VBUS ULPI CPEN Logic USB Connector VBUS DM DP DM DP Figure 5.12 USB3320 Drives Control Signal (CPEN) to External Vbus Switch 5.7 USB UART Support The USB3320 provides support for the USB UART interface as detailed in the ULPI specification and the former CEA-936A specification. The USB3320 can be placed in UART Mode using the method described in Section 6.5, and the regulator output will automatically switch to the value configured by the UART RegOutput bits in the USB IO & Power Management register. While in UART mode, the Linestate signals cannot be monitored on the DATA[0] and DATA[1] pins. 5.8 USB Charger Detection Support To support the detection and identification of different types of USB chargers the USB3320 provides integrated pull-up resistors, RCD, on both DP and DM. These pull-up resistors along with the single ended receivers can be used to help determine the type of USB charger attached. Reference information on implementing charger detection is provided in SMSC Application Note AN 19.7 - Battery Charging Using SMSC USB Transceivers. SMSC USB3320 39 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 5.8 USB Weak Pull-up Enable RESETB DP PULLUP ENABLE DM PULLUP ENABLE 0 0 0 1 ChargerPullupEnableDP ChargerPullupEnableDM Note: ChargerPullupEnableDP and ChargerPullupEnableDM are enabled in the USB IO & Power Management register. 5.9 USB Audio Support Note: The USB3320 supports “USB Digital Audio” through the USB protocol in ULPI and USB Serial modes described in Section 6. The USB3320 provides two low resistance analog switches that allow analog audio to be multiplexed over the DP and DM terminals of the USB connector. The audio switches are shown in Figure 5.1. The electrical characteristics of the USB Audio Switches are provided in Table 4.8. During normal USB operation the switches are off. When USB Audio is desired the switches can be turned “on” by enabling the SpkLeftEn, SpkRightEn, or MicEn bits in the Carkit Control register as described in Section 6.5.2. These bits are disabled by default. The USB Audio Switches can also be enabled by asserting the RESETB pin or removing the voltage at VDD18 as shown in Table 5.9. While using the USB switches, VDD18 is not required, but 3.3V must be present at VDD33. The integrated 3.3V LDO regulator may be used to generate VDD33 from power applied at the VBAT pin. Table 5.9 USB Audio Switch Enable RESETB VDD18 DP SWITCH ENABLE DM SWITCH ENABLE X 0 1 1 0 1 1 1 1 1 SpkLeftEn SpkRightEn or MicEn Note: SpkLeftEn, SpkRightEn, and MicEn are enabled in the Carkit Control register. In addition to USB Audio support the switches can also be used to multiplexed a second FS USB transceiver to the USB connector. The signal quality will be degraded slightly due to the “on” resistance of the switches. The USB3320 single-ended receivers described in Section 5.2.1 are disabled when either USB Audio switch is enabled. The USB3320 does not provide the DC bias for the audio signals. The SPK_R and SPK_L pins should be biased to 1.65V when audio signals are routed through the USB3320. This DC bias is necessary to prevent the audio signal from swinging below ground and being clipped by ESD Diodes. When the system is not using the USB Audio switches, the SPK_R and SPK_L pins should not be connected. Revision 1.0 (07-14-09) 40 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 5.10 Reference Frequency Selection The USB3320 is configured for the desired reference frequency by the REFSEL[2], REFSEL[1] and REFSEL[0] pins. If a pin is connected to VDDIO, the value of “1” is assigned. Connect the pin to ground to assign a “0.” When using the ULPI Input Clock Mode (60MHz REFCLK Mode), the reference frequency is always fixed at 60 MHz. Eight reference clock frequencies are available as described in Table 5.10. Table 5.10 Configuration to Select Reference Clock Frequency CONFIGURATION PINS DESCRIPTION REFSEL[2] REFSEL[1] REFSEL[0] 0 0 0 52 MHz 0 0 1 38.4 MHz 0 1 0 12 MHz 0 1 1 27 MHz 1 0 0 13 MHz 1 0 1 19.2 MHz 1 1 0 26 MHz 1 1 1 24 MHz SMSC USB3320 41 DATASHEET REFERENCE FREQUENCY Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 6 ULPI Operation 6.1 Overview The USB3320 uses the industry standard ULPI digital interface to facilitate communication between the USB Transceiver (PHY) and Link (device controller). The ULPI interface is designed to reduce the number of pins required to connect a discrete USB Transceiver to an ASIC or digital controller. For example, a full UTMI+ Level 3 OTG interface requires 54 signals while a ULPI interface requires only 12 signals. The ULPI interface is documented completely in the “UTMI+ Low Pin Interface (ULPI) Specification Revision 1.1”. The following sections describe the operating modes of the USB3320 digital interface. Figure 6.1 illustrates the block diagram of the ULPI digital functions. It should be noted that this USB3320 does not use a “ULPI wrapper” around a UTMI+ PHY core as the ULPI specification implies. USB Transmit and Receive Logic Tx Data High Speed TX Full Speed TX Low Speed TX Data[7:0] NOTE: The ULPI interface is a wrapperless design. HS RX Data To OTG Analog To USB Audio Analog Interface Protect Disable UseExternal Vbus Indicator Indicator Complement Indicator Pass Thru DischrgVbus ChrgVbus IdGndDrv IdPullUp SpkLeftEn SpkRightEn/MicEn ChargerPullupEnDP ChargerPullupEnDM RidCon...Done Rid State Machine VbusValid SessionValid SessionEnd IdGnd IdFloat ULPI Interupt XcvrSelect[1:0] TermSelect OpMode[1:0] Reset DpPulldown DmPulldown SwapDP/DM RegOutput[1:0] TxdEn RxdEn To RX Analog FS/LS Data Transceiver Control High Speed Data Recovery Full / Low Speed Data Recovery RidValue[2:0] RidCon...Start Rx Data ULPI Register Access STP To TX Analog FS/LS Tx Data ULPI Protocol Block Linestates[1:0] HostDisconnect NXT SuspendM 6pinSerial Mode 3pinSerial Mode ClockSuspendM AutoResume CarkitMode DIR HS Tx Data Interrupt Control ULPI Register Array RESETB POR Figure 6.1 ULPI Digital Block Diagram The advantage of a “wrapper less” architecture is that the USB3320 has a lower USB latency than a design which must first register signals into the PHY’s wrapper before the transfer to the PHY core. A Revision 1.0 (07-14-09) 42 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet low latency PHY allows a Link to use a wrapper around a UTMI Link and still make the required USB turn-around timing given in the USB 2.0 specification. RxEndDelay maximum allowed by the UTMI+/ULPI for 8-bit data is 63 high speed clocks. USB3320 uses a low latency high speed receiver path to lower the RxEndDelay to 43 high speed clocks. This low latency design gives the Link more cycles to make decisions and reduces the Link complexity. This is the result of the “wrapper less” architecture of the USB3320. This low RxEndDelay should allow legacy UTMI Links to use a “wrapper” to convert the UTMI+ interface to a ULPI interface. In Figure 6.1, a single ULPI Protocol Block decodes the ULPI 8-bit bi-directional bus when the Link addresses the PHY. The Link must use the DIR output to determine direction of the ULPI data bus. The USB3320 is the “bus arbitrator”. The ULPI Protocol Block will route data/commands to the transmitter or the ULPI register array. 6.1.1 ULPI Interface Signals The UTIM+ Low Pin Interface (ULPI) uses twelve pins to connect a full OTG Host / Device USB Transceiver to an SOC. A reduction of external pins on the transceiver is accomplished by realizing that many of the relatively static configuration pins (xcvrselect[1:0], termselect, opmode[1:0], and DpPullDown DmPulldown to list a few,) can be implemented by having an internal static register array. An 8-bit bi-directional data bus clocked at 60MHz allows the Link to access this internal register array and transfer USB packets to and from the transceiver. The remaining 3 pins function to control the data flow and arbitrate the data bus. Direction of the 8-bit data bus is controlled by the DIR output from the transceiver. Another output, NXT, is used to control data flow into and out of the device. Finally, STP, which is in input to the transceiver, terminates transfers and is used to start up and resume from Low Power Mode. The twelve signals are described below in Table 6.1. Table 6.1 ULPI Interface Signals SIGNAL DIRECTION DESCRIPTION CLK I/O 60MHz ULPI clock. All ULPI signals are driven synchronous to the rising edge of this clock. This clock can be either driven by the transceiver or the Link as described in Section 5.4.1 DATA[7:0] I/O 8-bit bi-directional data bus. Bus ownership is determined by DIR. The Link and transceiver initiate data transfers by driving a non-zero pattern onto the data bus. ULPI defines interface timing for a single-edge data transfers with respect to rising edge of the ULPI clock. DIR OUT Controls the direction of the data bus. When the transceiver has data to transfer to the Link, it drives DIR high to take ownership of the bus. When the transceiver has no data to transfer it drives DIR low and monitors the bus for commands from the Link. The transceiver will pull DIR high whenever the interface cannot accept data from the Link, such as during PLL start-up. STP IN The Link asserts STP for one clock cycle to stop the data stream currently on the bus. If the Link is sending data to the transceiver, STP indicates the last byte of data was on the bus in the previous cycle. NXT OUT The transceiver asserts NXT to throttle the data. When the Link is sending data to the transceiver, NXT indicates when the current byte has been accepted by the transceiver. The Link places the next byte on the data bus in the following clock cycle. USB3320 implements a Single Data Rate (SDR) ULPI interface with all data transfers happening on the rising edge of the 60MHz ULPI Clock while operating in Synchronous Mode. The direction of the data bus is determined by the state of DIR. When DIR is high, the transceiver is driving DATA[7:0]. When DIR is low, the Link is driving DATA[7:0]. SMSC USB3320 43 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Each time DIR changes, a “turn-around” cycle occurs where neither the Link nor transceiver drive the data bus for one clock cycle. During the “turn–around“cycle, the state of DATA[7:0] is unknown and the transceiver will not read the data bus. Because USB uses a bit-stuffing encoding, some means of allowing the transceiver to throttle the USB transmit data is needed. The ULPI signal NXT is used to request the next byte to be placed on the data bus by the Link layer. The ULPI interface supports the two basic modes of operation: Synchronous Mode and asynchronous modes that include Low Power Mode, Serial Modes, and Carkit Mode. In Synchronous Mode, all signals change synchronously with the 60MHz ULPI clock. In asynchronous modes the clock is off and the ULPI bus is redefined to bring out the signals required for that particular mode of operations. The description of synchronous Mode is described in the following sections while the descriptions of the asynchronous modes are described in Section 6.3, Section 6.4, and Section 6.5. 6.1.2 ULPI Interface Timing in Synchronous Mode The control and data timing relationships are given in Figure 6.2 and Table 4.3. All timing is relative to the rising clock edge of the 60MHz ULPI Clock. 60MHz ULPI CLK TSC THC Control In STP TSD THD Data In DATA[7:0] TDC TDC Control Out DIR, NXT TDD Data Out DATA[7:0] Figure 6.2 ULPI Single Data Rate Timing Diagram in Synchronous Mode 6.2 ULPI Register Access A command from the Link begins a ULPI transfer from the Link to the USB3320. Before reading a ULPI register, the Link must wait until DIR is low, and then send a Transmit Command Byte (TXD CMD) byte. The TXD CMD byte informs the USB3320 of the type of data being sent. The TXD CMD is followed by a data transfer to or from the USB3320. Table 6.2 gives the TXD command byte (TXD CMD) encoding for the USB3320. The upper two bits of the TX CMD instruct the transceiver as to what type of packet the Link is transmitting. The ULPI registers retain their contents when the transceiver is in Low Power Mode, Full Speed/Low Speed Serial Mode, or Carkit Mode. Revision 1.0 (07-14-09) 44 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 6.2 ULPI TXD CMD Byte Encoding COMMAND NAME CMD BITS[7:6] CMD BITS[5:0] Idle 00b 000000b ULPI Idle Transmit 01b 000000b USB Transmit Packet with No Packet Identifier (NOPID) 00XXXXb USB Transmit Packet Identifier (PID) where DATA[3:0] is equal to the 4-bit PID. P3P2P1P0 where P3 is the MSB. XXXXXXb Immediate Register Write Command where: DATA[5:0] = 6-bit register address Register Write 10b 101111b Register Read 11b Extended Register Write Command where the 8-bit register address is available on the next cycle. XXXXXXb Immediate Register Read Command where: DATA[5:0] = 6-bit register address 101111b 6.2.1 COMMAND DESCRIPTION Extended Register Read Command where the 8-bit register address is available on the next cycle. ULPI Register Write A ULPI register write operation is given in Figure 6.3. The TXD command with a register write DATA[7:6] = 10b is driven by the Link at T0. The register address is encoded into DATA[5:0] of the TXD CMD byte. T0 T1 T2 T3 T4 T5 T6 CLK DATA[7:0] Idle TXD CMD (reg write) Reg Data[n] Idle DIR STP NXT ULPI Register Reg Data [n-1] Reg Data [n] Figure 6.3 ULPI Register Write in Synchronous Mode To write a register, the Link will wait until DIR is low, and at T0, drive the TXD CMD on the data bus. At T2 the transceiver will drive NXT high. On the next rising clock edge, T3, the Link will write the SMSC USB3320 45 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet register data. At T4, the transceiver will accept the register data and drive NXT low. The Link will drive an Idle on the bus and drive STP high to signal the end of the data packet. Finally, at T5, the transceiver will latch the data into the register and the Link will pull STP low. NXT is used to control when the Link drives the register data on the bus. DIR is low throughout this transaction since the transceiver is receiving data from the Link. STP is used to end the transaction and data is registered after the de-assertion of STP. After the write operation completes, the Link must drive a ULPI Idle (00h) on the data bus or the USB3320 may decode the bus value as a ULPI command. A ULPI extended register write operation is shown in Figure 6.4. To write an extended register, the Link will wait until DIR is low, and at T0, drive the TXD CMD on the data bus. At T2 the transceiver will drive NXT high. On the next clock T3 the Link will drive the extended address. On the next rising clock edge, T4, the Link will write the register data. At T5, the transceiver will accept the register data and drive NXT low. The Link will drive an Idle on the bus and drive STP high to signal the end of the data packet. Finally, at T5, the transceiver will latch the data into the register. The Link will pull STP low. T0 T1 T2 T3 T4 T5 T6 T7 CLK DATA[7:0] Idle TXD CMD (extended reg write) Extended address Reg Data[n] Idle DIR STP NXT ULPI Register Reg Data [n-1] Reg Data [n] Figure 6.4 ULPI Extended Register Write in Synchronous Mode Revision 1.0 (07-14-09) 46 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 6.2.2 ULPI Register Read A ULPI register read operation is given in Figure 6.5. The Link drives a TXD CMD byte with DATA[7:6] = 11h for a register read. DATA[5:0] of the ULPI TXD command bye contain the register address. T0 T1 T2 T3 T4 T5 T6 CLK DATA[7:0] Idle TXD CMD reg read Turn around Reg Data Turn around Idle DIR STP NXT Figure 6.5 ULPI Register Read in Synchronous Mode At T0, the Link will place the TXD CMD on the data bus. At T2, the transceiver will bring NXT high, signaling the Link it is ready to accept the data transfer. At T3, the transceiver reads the TXD CMD, determines it is a register read, and asserts DIR to gain control of the bus. The transceiver will also de-assert NXT. At T4, the bus ownership has transferred back to the transceiver and the transceiver drives the requested register onto the data bus. At T5, the Link will read the data bus and the transceiver will drop DIR low returning control of the bus back to the Link. After the turn around cycle, the Link must drive a ULPI Idle command at T6. A ULPI extended register read operation is shown in Figure 6.6.To read an extended register, the Link writes the TX CMD with the address set to 2Fh. At T2, the transceiver will assert NXT, signaling the Link it is ready to accept the extended address. At T3, the Link places the extended register address on the bus. At T4, the transceiver reads the extended address, and asserts DIR to gain control of the bus. The transceiver will also de-assert NXT. At T5, the bus ownership has transferred back to the transceiver and the transceiver drives the requested register onto the data bus. At T6, the Link will read the data bus and the transceiver will de-assert DIR returning control of the bus back to the Link. After the turn around cycle, the Link must drive a ULPI Idle command at T6. SMSC USB3320 47 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet T0 T1 T2 T3 T4 T5 T6 T7 CLK DATA[7:0] TXD CMD extended reg read Idle Extended address Turn around Reg Data Turn around Idle DIR STP NXT Figure 6.6 ULPI Extended Register Read in Synchronous Mode 6.2.3 ULPI RXCMD The ULPI Link needs information which was provided by the following pins in a UTMI implementation: linestate[1:0], rxactive, rxvalid and rxerror. When implementing the OTG functions, the VBUS and ID pin states must also be transferred to the Link. ULPI defines a Receive Command Byte (RXCMD) that contains this information. The Encoding of the RXCMD byte is given in the Table 6.3. Transfer of the RXCMD byte occurs in Synchronous Mode when the transceiver has control of the bus. The ULPI Protocol Block shown in Figure 6.1 determines when to send an RXCMD. A RXCMD can occur: When a linestate change occurs. When VBUS or ID comparators change state. During a USB receive when NXT is low. After the USB3320 deasserts DIR and STP is low during start-up After the USB3320 exits Low Power Mode, Serial Modes, or Carkit Mode after detecting that the Link has de-asserted STP, and DIR is low. When a USB Receive is occurring, RXCMD’s are sent whenever NXT = 0 and DIR = 1. During a USB Transmit, the RXCMD’s are returned to the Link after STP is asserted. If an RXCMD event occurs during a USB transmit, the RXCMD is blocked until STP de-asserts at the end of the transmit. The RXCMD contains the status that is current at the time the RXCMD is sent. Revision 1.0 (07-14-09) 48 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 6.3 ULPI RX CMD Encoding DATA[7:0] NAME DESCRIPTION AND VALUE [1:0] Linestate UTMI Linestate Signals Note 6.1 [3:2] Encoded VBUS State ENCODED VBUS VOLTAGE STATES [5:4] VALUE Rx Event Encoding [6] State of ID pin [7] alt_int VBUS VOLTAGE SESSEND SESSVLD VBUSVLD2 00 VVBUS < VSESS_END 1 0 0 01 VSESS_END < VVBUS < VSESS_VLD 0 0 0 10 VSESS_VLD < VVBUS < VVBUS_VLD X 1 0 11 VVBUS_VLD < VVBUS X X 1 ENCODED UTMI EVENT SIGNALS VALUE RXACTIVE RXERROR HOSTDISCONNECT 00 0 0 0 01 1 0 0 11 1 1 0 10 X X 1 Set to the logic state of the ID pin. A logic low indicates an A device. A logic high indicates a B device. Asserted when a non-USB interrupt occurs. This bit is set when an unmasked event occurs on any bit in the Carkit Interrupt Latch register. The Link must read the Carkit Interrupt Latch register to determine the source of the interrupt. Section 5.6.1.3 describes how a change on the ID pin can generate an interrupt. Section 6.6 describes how an interrupt can be generated when the RidConversionDone bit is set. Notes: 1. An ‘X’ is a do not care and can be either a logic 0 or 1. 2. The value of VbusValid is defined in Table 5.6. Note 6.1 6.2.4 LineState: These bits in the RXCMD byte reflect the current state of the Full-Speed single ended receivers. LineState[0] directly reflects the current state of DP. LineState[1] directly reflects the current state of DM. When DP=DM=0 this is called "Single Ended Zero" (SE0). When DP=DM=1, this is called "Single Ended One" (SE1). USB3320 Transmitter The USB3320 ULPI transmitter fully supports HS, FS, and LS transmit operations. Figure 6.1 shows the high speed, full speed, and low speed transmitter block controlled by ULPI Protocol Block. Encoding of the USB packet follows the bit-stuffing and NRZI outlined in the USB 2.0 specification. Many of these functions are re-used between the HS and FS/LS transmitters. When using the USB3320, Table 5.1 should always be used as a guideline on how to configure for various modes of operation. The transmitter decodes the inputs of XcvrSelect[1:0], TermSelect, OpMode[1:0], DpPulldown, and DmPulldown to determine what operation is expected. Users must strictly adhere to the modes of operation given in Table 5.1. SMSC USB3320 49 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Several important functions for a device and host are designed into the transmitter blocks. The USB3320 transmitter will transmit a 32-bit long high speed sync before every high speed packet. In full and low speed modes a 8-bit sync is transmitted. When the device or host needs to chirp for high speed port negotiation, the OpMode = 10b setting in the Function Control register will turn off the bit-stuffing and NRZI encoding in the transmitter. At the end of a chirp, the USB3320 OpMode bits should be changed only after the RXCMD linestate encoding indicates that the transmitter has completed transmitting. Should the opmode be switched to normal bit-stuffing and NRZI encoding before the transmit pipeline is empty, the remaining data in the pipeline may be transmitted in an bit-stuff encoding format. Please refer to the ULPI specification for a detailed discussion of USB reset and HS chirp. 6.2.4.1 High Speed Long EOP When operating as a Hi-Speed host, the USB3320 will automatically generate a 40 bit long End of Packet (EOP) after a SOF PID (A5h). The USB3320 determines when to send the 40-bit long EOP by decoding the ULPI TXD CMD bits [3:0] for the SOF. The 40-bit long EOP is only transmitted when the DpPulldown and DmPulldown bits in the OTG Control register are asserted. The Hi-Speed 40-bit long EOP is used to detect a disconnect in high speed mode. In device mode, the USB3320 will not send a long EOP after a SOF PID. 6.2.4.2 Low Speed Keep-Alive Low speed keep alive is supported by the USB3320. When in Low speed (XcvrSelect = 10b in the Function Control register), the USB3320 will send out two Low speed bit times of SE0 when a SOF PID is received. 6.2.4.3 UTMI+ Level 3 Pre-amble is supported for UTMI+ Level 3 compatibility. When XcvrSelect = 11b in the Function Control register in host mode (DpPulldown and DmPulldown both asserted), the USB3320 will pre-pend a full speed pre-amble before the low speed packet. Full speed rise and fall times are used in this mode. The pre-amble consists of the following: Full speed sync, the encoded pre-PID (C3h) and then full speed idle (DP=1 and DM = 0). A low speed packet follows with a sync, data and a LS EOP. The USB3320 will only support UTMI+ Level 3 as a host. The USB3320 does not support UTMI+ Level 3 as a peripheral. A UTMI+ Level 3 peripheral is an upstream hub port. The USB3320 will not decode a pre-amble packet intended for a LS device when the USB3320 is configured as the upstream port of a FS hub, XcvrSelect = 11b, DpPulldown = 0b, DmPulldown =0b. 6.2.4.4 Host Resume K Resume K generation is supported by the USB3320. When the USB3320 exits the suspended (Low Power Mode), the USB3320, when operating as a host, will transmit a K on DP/DM. The transmitters will end the K with SE0 for two Low Speed bit times. If the USB3320 was operating in high speed mode before the suspend, the host must change to high speed mode before the SE0 ends. SE0 is two low speed bit times which is about 1.2 us. For more details please see sections 7.1.77 and 7.9 of the USB Specification. In device mode, the resume K will not append an SE0, but release the bus to the correct idle state, depending upon the operational mode as shown in Table 5.1. The ULPI specification includes a detailed discussion of the resume sequence and the order of operations required. To support Host start-up of less than 1mS the USB3320 implements the ULPI AutoResume bit in the Interface Control register. The default AutoResume state is 0 and this bit should be enabled for Host applications. Revision 1.0 (07-14-09) 50 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 6.2.4.5 No SYNC and EOP Generation (OpMode = 11) UTMI+ defines OpMode = 11 where no sync and EOP generation occurs in Hi-Speed operation. This is an option to the ULPI specification and not implemented in the USB3320. 6.2.4.6 Typical USB Transmit with ULPI Figure 6.7 shows a typical USB transmit sequence. A transmit sequence starts by the Link sending a TXD CMD where DATA[7:6] = 01b, DATA[5:4] = 00b, and Data[3:0] = PID. The TX CMD with the PID is followed by transmit data. CLK DATA[7:0] TXD CMD (USB tx) Idle D0 D1 D2 D3 IDLE Turn Around RXD CMD Turn Around DIR NXT STP DP/DM SE0 !SQUELCH SE0 Figure 6.7 ULPI Transmit in Synchronous Mode During transmit the transceiver will use NXT to control the rate of data flow into the transceiver. If the USB3320 pipeline is full or bit-stuffing causes the data pipeline to overfill NXT is de-asserted and the Link will hold the value on Data until NXT is asserted. The USB Transmit ends when the Link asserts STP while NXT is asserted. Note: The Link cannot assert STP with NXT de-asserted since the USB3320 is expecting to fetch another byte from the Link. After the USB3320 completes transmitting, the DP and DM lines return to idle and a RXCMD is returned to the Link so the inter-packet timers may be updated by linestate. While operating in Full Speed or Low Speed, an End-of-Packet (EOP) is defined as SE0 for approximately two bit times, followed by J for one bit time. The transceiver drives a J state for one bit time following the SE0 to complete the EOP. The Link must wait for one bit time following line state indication of the SE0 to J transition to allow the transceiver to complete the one bit time J state. All bit times are relative to the speed of transmission. In the case of Full Speed or Low Speed, after STP is asserted each FS/LS bit transition will generate a RXCMD since the bit times are relatively slow. 6.2.5 USB Receiver The USB3320 ULPI receiver fully supports HS, FS, and LS transmit operations. In all three modes the receiver detects the start of packet and synchronizes to the incoming data packet. In the ULPI protocol, a received packet has the priority and will immediately follow register reads and RXCMD transfers. Figure 6.8 shows a basic USB packet received by the USB3320 over the ULPI interface. SMSC USB3320 51 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet CLK DATA[7:0] Idle Turn around Rxd Cmd PID D1 Rxd Cmd D2 Turn around DIR STP NXT Figure 6.8 ULPI Receive in Synchronous Mode In Figure 6.8 the transceiver asserts DIR to take control of the data bus from the Link. The assertion of DIR and NXT in the same cycle contains additional information that Rxactive has been asserted. When NXT is de-asserted and DIR is asserted, the RXCMD data is transferred to the Link. After the last byte of the USB receive packet is transferred to the transceiver, the linestate will return to idle. The ULPI full speed receiver operates according to the UTMI / ULPI specification. In the full speed case, the NXT signal will assert only when the Data bus has a valid received data byte. When NXT is low with DIR high, the RXCMD is driven on the data bus. In full speed, the USB3320 will not issue a Rxactive de-assertion in the RXCMD until the DP/DM linestate transitions to idle. This prevents the Link from violating the two full speed bit times minimum turn around time. 6.2.5.1 Disconnect Detection A High Speed host must detect a disconnect by sampling the transmitter outputs during the long EOP transmitted during a SOF packet. The USB3320 only looks for a high speed disconnect during the long EOP where the period is long enough for the disconnect reflection to return to the host transceiver. When a high speed disconnect occurs, the USB3320 will return a RXCMD and set the host disconnect bit in the USB Interrupt Status register. When in FS or LS modes, the Link is expected to handle all disconnect detection. 6.3 Low Power Mode Low Power Mode is a power down state to save current when the USB session is suspended. The Link controls when the transceiver is placed into or out of Low Power Mode. In Low Power Mode all of the circuits are powered down except the interface pins, full speed receiver, VBUS comparators, and IdGnd comparator. Before entering Low Power Mode, the USB3320 must be configured to set the desired state of the USB transceiver. The XcvrSelect[1:0], TermSelect and OpMode[1:0] bits in the Function Control register, and the DpPulldown and DmPulldown bits in the OTG Control register control the configuration as shown in Table 5.1. The DP and DM pins are configured to a high impedance state by configuring OpMode[1:0] = 01. Pull-down resistors with a value of approximately 2MΩ are present Revision 1.0 (07-14-09) 52 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet on the DP and DM pins to avoid false linestate indications that could result if the pins were allowed to float. 6.3.1 Entering Low Power/Suspend Mode To enter Low Power Mode, the Link will write a 0 or clear the SuspendM bit in the Function Control register. After this write is complete, the transceiver will assert DIR high and after a minimum of five rising edges of CLKOUT, drive the clock low. After the clock is stopped, the transceiver will enter a low power state to conserve current. Placing the transceiver in Suspend Mode is not related to USB Suspend. To clarify this point, USB Suspend is initiated when a USB host stops data transmissions and enters Full-Speed mode with 15KΩ pull-down resistors on DP and DM. The suspended device goes to Full-Speed mode with a pull-up on DP. Both the host and device remain in this state until one of them drives DM high (this is called a resume). T0 T1 T2 T3 T4 T5 T6 CLK DATA[7:0] TXD CMD (reg write) Idle Reg Data[n] Idle Turn Around ... T10 Low Power Mode DIR STP NXT SUSPENDM (ULPI Register Bit) Figure 6.9 Entering Low Power Mode from Synchronous Mode While in Low Power Mode, the Data interface is redefined so that the Link can monitor Linestate and the VBUS voltage. In Low Power Mode DATA[3:0] are redefined as shown in Table 6.4. Linestate[1:0] is the combinational output of the Single-Ended Receivers. The “int” or interrupt signal indicates an unmasked interrupt has occurred. When an unmasked interrupt or linestate change has occurred, the Link is notified and can determine if it should wake-up the transceiver. Table 6.4 Interface Signal Mapping During Low Power Mode SIGNAL MAPS TO DIRECTION DESCRIPTION linestate[0] DATA[0] OUT Combinatorial LineState[0] driven directly by the Full-Speed single ended receiver. Note 6.2 linestate[1] DATA[1] OUT Combinatorial LineState[1] driven directly by the Full-Speed single ended receiver. Note 6.2 reserved DATA[2] OUT Driven Low int DATA[3] OUT Active high interrupt indication. Must be asserted whenever any unmasked interrupt occurs. reserved DATA[7:4] OUT Driven Low SMSC USB3320 53 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Note 6.2 LineState: These signals reflect the current state of the Full-Speed single ended receivers. LineState[0] directly reflects the current state of DP. LineState[1] directly reflects the current state of DM. When DP=DM=0 this is called "Single Ended Zero" (SE0). When DP=DM=1, this is called "Single Ended One" (SE1). An unmasked interrupt can be caused by the following comparators changing state: VbusVld, SessVld, SessEnd, and IdGnd. If any of these signals change state during Low Power Mode and the bits are enabled in either the USB Interrupt Enable Rising or USB Interrupt Enable Falling registers, DATA[3] will assert. During Low Power Mode, the VbusVld and SessEnd comparators can have their interrupts masked to lower the suspend current as described in Section 6.3.4. While in Low Power Mode, the Data bus is driven asynchronously because all of the transceiver clocks are stopped during Low Power Mode. 6.3.2 Exiting Low Power Mode To exit Low Power Mode, the Link will assert STP. Upon the assertion of STP, the USB3320 will begin its start-up procedure. After the transceiver start-up is complete, the transceiver will start the clock on CLKOUT and de-assert DIR. After DIR has been de-asserted, the Link can de-assert STP when ready and start operating in Synchronous Mode. The transceiver will automatically set the SuspendM bit to a 1 in the Function Control register. T0 ... CLK LOW POWER MODE DATA[7:0] T1 T2 TURN AROUND T3 DATA BUS IGNORED (SLOW LINK) IDLE (FAST LINK) Fast Link Drives Bus Idle and STP low DIR T4 T5 IDLE Slow Link Drives Bus Idle and STP low STP Note: Not to Scale TSTART Figure 6.10 Exiting Low Power Mode The value for TSTART is given in Table 4.2. Should the Link de-assert STP before DIR is de-asserted, the USB3320 will detect this as a false resume request and return to Low Power Mode. This is detailed in section 3.9.4 of the ULPI 1.1 specification. 6.3.3 Interface Protection ULPI protocol assumes that both the Link and transceiver will keep the ULPI data bus driven by either the Link when DIR is low or the transceiver when DIR is high. The only exception is when DIR has changed state and a turn around cycle occurs for 1 clock period. In the design of a USB system, there can be cases where the Link may not be driving the ULPI bus to a known state while DIR is low. Two examples where this can happen is because of a slow Link start-up or a hardware reset. Revision 1.0 (07-14-09) 54 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 6.3.3.1 Start up Protection Upon start-up, when the transceiver de-asserts DIR, the Link must be ready to receive commands and drive Idle on the data bus. If the Link is not ready to receive commands or drive Idle, it must assert STP before DIR is de-asserted. The Link can then de-assert STP when it has completed its start-up. If the Link doesn’t assert STP before it can receive commands, the transceiver may interpret the data bus state as a TX CMD and transmit invalid data onto the USB bus, or make invalid register writes. When the USB3320 sends a RXCMD the Link is required to drive the data bus back to idle at the end of the turn around cycle. If the Link does not drive the databus to idle the USB3320 may take the information on the data bus as a TXCMD and transmit data on DP and DM until the Link asserts stop. If the ID pin is floated the last RXCMD from the USB3320 will remain on the bus after DIR is deasserted and the USB3320 will take this in as a TXCMD. A Link should be designed to have the default POR state of the STP output high and the data bus tristated. The USB3320 has weak pull-downs on the data bus to prevent these inputs from floating when not driven. These resistors are only used to prevent the ULPI interface from floating during events when the link ULPI pins may be tri-stated. The strength of the pull down resistors can be found in Table 4.4. The pull downs are not strong enough to pull the data bus low after a ULPI RXCMD, the Link must drive the data bus to idle after DIR is de-asserted. In some cases, a Link may be software configured and not have control of its STP pin until after the transceiver has started. In this case, the USB3320 has in internal pull-up on the STP input pad which will pull STP high while the Link’s STP output is tri-stated. The STP pull-up resistor is enabled on POR and can be disabled by setting the InterfaceProtectDisable bit 7 of the Interface Control register. The STP pull-up resistor will pull-up the Link’s STP input high until the Link configures and drives STP high. After the Link completes its start-up, STP can be synchronously driven low. A Link design which drives STP high during POR can disable the pull-up resistor on STP by setting InterfaceProtectDisable bit to 1. A motivation for this is to reduce the suspend current. In Low Power Mode, STP is held low, which would draw current through the pull-up resistor on STP. 6.3.3.2 Warm Reset Designers should also consider the case of a warm restart of a Link with a transceiver in Low Power Mode. After the transceiver enters Low Power Mode, DIR is asserted and the clock is stopped. The USB3320 looks for STP to be asserted to re-start the clock and then resume normal synchronous operation. Should the USB3320 be suspended in Low Power Mode, and the Link receives a hardware reset, the transceiver must be able to recover from Low Power Mode and start its clock. If the Link asserts STP on reset, the transceiver will exit Low Power Mode and start its clock. If the Link does not assert STP on reset, the interface protection pull-up can be used. When the Link is reset, its STP output will tri-state and the pull-up resistor will pull STP high, signaling the transceiver to restart its clock. 6.3.4 Minimizing Current in Low Power Mode In order to minimize the suspend current in Low Power Mode, the OTG comparators can be disabled to reduce suspend current. In Low Power Mode, the VbusVld and SessEnd comparators are not needed and can be disabled by clearing the associated bits in both the USB Interrupt Enable Rising and USB Interrupt Enable Falling registers. By disabling the interrupt in BOTH the rise and fall registers, the SessEnd and VbusVld comparators are turned off. The IdFloatRise and IdFloatFall bits in Carkit Interrupt Enable register should also be disabled if they were set. When exiting Low Power Mode, the Link should immediately re-enable the VbusVld and SessEnd comparators if host or OTG functionality is required. In addition to disabling the OTG comparators in Low Power Mode, the Link may choose to disable the Interface Protect Circuit. By setting the InterfaceProtectDisable bit high in the Interface Control register, SMSC USB3320 55 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet the Link can disable the pull-up resistor on STP. When RESETB is low the Interface Protect Circuit will be disabled. 6.4 Full Speed/Low Speed Serial Modes The USB3320 includes two serial modes to support legacy Links which use either the 3pin or 6pin serial format. To enter either serial mode, the Link will need to write a 1 to the 6-pin FsLsSerialMode or the 3-pin FsLsSerialMode bits in the Interface control register. Serial Mode may be used to conserve power when attached to a device that is not capable of operating in Hi-Speed. The serial modes are entered in the same manner as the entry into Low Power Mode. The Link writes the Interface Control register bit for the specific serial mode. The USB3320 will assert DIR and shut off the clock after at least five clock cycles. Then the data bus goes to the format of the serial mode selected. Before entering Serial Mode the Link must set the ULPI transceiver to the appropriate mode as defined in Table 5.1. In ULPI Output Clock Mode, the transceiver will shut off the 60MHz clock to conserve power. Should the Link need the 60MHz clock to continue during the serial mode of operation, the ClockSuspendM bit[3] of the Interface Control Register should be set before entering a serial mode. If set, the 60 MHz clock will be present during serial modes. In serial mode, interrupts are possible from unmasked sources. The state of each interrupt source is sampled prior to the assertion of DIR and this is compared against the asynchronous level from interrupt source. Exiting the serial modes is the same as exiting Low Power Mode. The Link must assert STP to signal the transceiver to exit serial mode. When the transceiver can accept a command, DIR is de-asserted and the transceiver will wait until the Link de-asserts STP to resume synchronous ULPI operation. The RESETB pin can also be pulsed low to reset the USB3320 and return it to Synchronous Mode. 6.4.0.1 3pin FS/LS Serial Mode Three pin serial mode utilizes the data bus pins for the serial functions shown in Table 6.5. Table 6.5 Pin Definitions in 3 Pin Serial Mode SIGNAL CONNECTED TO DIRECTION tx_enable DATA[0] IN Active High transmit enable. data DATA[1] I/O TX differential data on DP/DM when tx_enable is high. RX differential data from DP/DM when tx_enable is low. SE0 DATA[2] I/O TX SE0 on DP/DM when tx_enable is high. RX SE0_b from DP/DM when tx_enable is low. interrupt DATA[3] OUT Asserted when any unmasked interrupt occurs. Active high. Reserved DATA[7:4] OUT Driven Low. Revision 1.0 (07-14-09) DESCRIPTION 56 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 6.4.0.2 6Pin FS/LS Serial Mode Six pin serial mode utilizes the data bus pins for the serial functions shown in Table 6.6. Table 6.6 Pin Definitions in 6 Pin Serial Mode SIGNAL CONNECTED TO DIRECTION tx_enable DATA[0] IN Active High transmit enable. tx_data DATA[1] IN Tx differential data on DP/DM when tx_enable is high. tx_se0 DATA[2] IN Tx SE0 on DP/DM when tx_enable is high. interrupt DATA[3] OUT Asserted when any unmasked interrupt occurs. Active high. rx_dp DATA[4] OUT Single ended receive data on DP. rx_dm DATA[5] OUT Single ended receive data on DM. rx_rcv DATA[6] OUT Differential receive data from DP and DM. Reserved DATA[7] OUT Driven Low. 6.5 DESCRIPTION Carkit Mode The USB3320 includes Carkit Mode to support a USB UART and USB Audio Mode. By entering Carkit Mode, the USB3320 current drain is minimized. When operating in ULPI Input Clock Mode (60MHz REFCLK Mode), the CLKOUT is stopped to conserve power by default. The Link may configure the 60MHz clock to continue by setting the ClockSuspendM bit of the Interface Control register before entering Carkit Mode. If set, the 60 MHz clock will continue during the Carkit Mode of operation. In Carkit Mode, interrupts are possible if they have been enabled in the Carkit Interrupt Enable register. The state of each interrupt source is sampled prior to the assertion of DIR and this is compared against the asynchronous level from interrupt source. In Carkit Mode, the Linestate signals are not available per the ULPI specification. Exiting Carkit Mode is the same as exiting Low Power Mode as described in Section 6.3.2. The Link must assert STP to signal the transceiver to exit serial mode. When the transceiver can accept a command, DIR is de-asserted and the transceiver will wait until the Link de-asserts STP to resume synchronous ULPI operation. The RESETB pin can also be pulsed low to reset the USB3320 and return it to Synchronous Mode. SMSC USB3320 57 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 6.5.1 USB UART Mode The USB3320 can be placed into UART Mode by first setting the TxdEn and RxdEn bits in the Carkit Control register. Then the Link can set the CarkitMode bit in the Interface Control register. The TxdEn and RxdEn bits must be written before the CarkitMode bit. Table 6.7 ULPI Register Programming Example to Enter UART Mode R/W ADDRESS (HEX) VALUE (HEX) W 04 W DESCRIPTION RESULT 49 Configure Non-Driving mode Select FS transmit edge rates OpMode=01 XcvrSelect=01 39 00 Set regulator to 3.3V UART RegOutput=00 W 19 0C Enable UART connections RxdEn=1 TxdEn=1 W 07 04 Enable carkit mode CarkitMode=1 After the CarkitMode bit is set, the ULPI interface will become redefined as described in Table 6.8, and the USB3320 will transmit data through the DATA[0] to DM of the USB connector and receive data on DP and pass the information the Link on DATA[1]. When entering UART mode, the regulator output will automatically switch to the value configured by the UART RegOutput bits in the USB IO & Power Management register and a pull-up will be applied internally to DP and DM. This will hold the UART in its default operating state. While in UART mode, the transmit edge rates can be set to either the Full Speed USB or Low Speed USB edge rates by using the XcvrSelect[1:0] bits in the Function Control register. Table 6.8 Pin Definitions in Carkit Mode SIGNAL CONNECTED TO DIRECTION DESCRIPTION txd DATA[0] IN UART TXD signal that is routed to the DM pin if the TxdEn is set in the Carkit Control register. rxd DATA[1] OUT UART RXD signal that is routed to the DP pin if the RxdEn bit is set in the Carkit Control register. reserved DATA[2] OUT Driven Low. int DATA[3] OUT Asserted when any unmasked interrupt occurs. Active high. reserved DATA[4:7] OUT Driven Low. Revision 1.0 (07-14-09) 58 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 6.5.2 USB Audio Mode When the USB3320 is powered in Synchronous Mode, the Audio switches can be enabled by asserting the SpkLeftEn, or SpkRightEn bits in the Carkit Control register. After the register write is complete, the USB3320 will immediately enable or disable the audio switch. Then the Link can set the CarkitMode bit in the Interface Control register. The SpkLeftEn, or SpkRightEn bits must be written before the CarkitMode bit. Table 6.9 ULPI Register Programming Example to Enter Audio Mode R/W ADDRESS (HEX) VALUE (HEX) DESCRIPTION RESULT W 04 48 Configure Non-Driving mode OpMode=01 W 19 30 Enable Audio connections SpkrRightEn=1, SpkrLeftEn=1 W 07 04 Enable carkit mode CarkitMode=1 After the CarkitMode bit is set, the ULPI interface will become redefined as described in Table 6.8. 6.6 RID Converter Operation The RID converter is designed to read the value of the ID resistance to ground and report back its value through the ULPI interface. When a resistor to ground is applied to the ID pin the state of the IdGnd comparator will change from a 1 to a 0 as described in Section 5.6.1. If the USB3320 is in ULPI mode, an RXCMD will be generated with bit 6 low. If the USB3320 is in Low Power Mode (or one of the other non-ULPI modes), the DATA[3] interrupt signal will go high. After the USB3320 has detected the change of state on the ID pin, the RID converter can be used to determine the value of ID resistance. To start a ID resistance measurement, the RidConversionStart bit is set in the Vendor Rid Conversion register. The Link can use one of two methods to determine when the RID Conversion is complete. One method is polling the RidConversionStart bit as described in Section 7.1.3.3. The preferred method is to set the RidIntEn bit in the Vendor Rid Conversion register. When RidIntEn is set, an RXCMD will be generated after the RID conversion is complete. As described in Table 6.3, the alt_int bit of the RXCMD will be set. After the RID Conversion is complete, the Link can read RidValue from the Vendor Rid Conversion register. 6.7 Headset Audio Mode This mode is designed to allow a user to view the status of several signals while using an analog audio headset with a USB connector. This feature, exclusive to SMSC, is provided as an alternate mode to the CarKit Mode defined in Section 6.5. In the CarKit Mode, the Link is unable to view the source of the interrupt on ID, except by returning to synchronous mode to read the ULPI registers. This forces the audio switches to be deactivated, and may glitch the audio signals. In addition, the Link cannot change the resistance on the ID pin without starting up the PHY to access the ULPI registers. The Headset Audio Mode is entered by writing to the Headset Audio Mode register, and allows the Link access to the state of the VBUS and ID pins during audio without glitching the audio connection. The Headset Audio mode also enables the Link to change the resistance on the ID pin and to change the audio headset attached from mono to stereo. SMSC USB3320 59 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet The ULPI interface is redefined as shown in Table 6.10 when Headset Audio Mode is entered. Table 6.10 Pin Definitions in Headset Audio Mode SIGNAL CONNECTED TO DIRECTION DESCRIPTION SessVld DATA[0] OUT Output of SessVld comparator VbusVld DATA[1] OUT Output of VbusVld Comparator (interrupt must be enabled) IdGndDrv DATA[2] IN Drives ID pin to ground when asserted 0b: Not connected 1b: Connects ID to ground. DATA[3] OUT Driven low IdGround DATA[4] OUT Asserted when the ID pin is grounded. 0b: ID pin is grounded 1b: ID pin is floating IdFloat DATA[5] OUT Asserted when the ID pin is floating. IdPullup or d_pullup330 must be enabled as shown below. IdPullup330 DATA[6] IN When enabled a 330kΩpullup is applied to the ID pin. This bit will also change the trip point of the IdGnd comparator to the value shown in Table 4.7. 0b: Disables the pull-up resistor 1b: Enables the pull-up resistor IdPullup DATA[7] IN Connects the 100kΩ pull-up resistor from the ID pin to VDD3.3 0b: Disables the pull-up resistor 1b: Enables the pull-up resistor Exiting Headset Audio Mode is the same as exiting Low Power Mode as described in Section 6.3.2. The Link must assert STP to signal the PHY to exit. When the PHY can accept a command, DIR is de-asserted and the PHY will wait until the Link de-asserts STP to resume synchronous ULPI operation. The RESETB pin can also be pulsed low to reset the USB3320 and return it to Synchronous Mode. Revision 1.0 (07-14-09) 60 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 7 ULPI Register Map 7.1 ULPI Register Array The USB3320 Transceiver implements all of the ULPI registers detailed in the ULPI revision 1.1 specification. The complete USB3320 ULPI register set is shown in Table 7.1. All registers are 8 bits. This table also includes the default state of each register upon POR or de-assertion of RESETB, as described in Section 5.5.2. The RESET bit in the Function Control Register does not reset the bits of the ULPI register array. The Link should not read or write to any registers not listed in this table. The USB3320 supports extended register access. The immediate register set (00-3Fh) can be accessed through either a immediate address or an extended register address. Table 7.1 ULPI Register Map ADDRESS (6BIT) DEFAULT STATE READ WRITE SET CLEAR Vendor ID Low 24h 00h - - - Vendor ID High 04h 01h - - - Product ID Low 07h 02h - - - Product ID High 00h 03h - - - Function Control 41h 04-06h 04h 05h 06h Interface Control 00h 07-09h 07h 08h 09h OTG Control 06h 0A-0Ch 0Ah 0Bh 0Ch USB Interrupt Enable Rising 1Fh 0D-0Fh 0Dh 0Eh 0Fh USB Interrupt Enable Falling 1Fh 10-12h 10h 11h 12h USB Interrupt Status (Note 7.1) 00h 13h - - - USB Interrupt Latch 00h 14h - - - Debug 00h 15h - - - Scratch Register 00h 16-18h 16h 17h 18h Carkit Control 00h 19-1Bh 19h 1Ah 1Bh Reserved 00h Carkit Interrupt Enable 00h 1D-1Fh 1Dh 1Eh 1Fh Carkit Interrupt Status 00h 20h - - - Carkit Interrupt Latch 00h 21h - - - Reserved 00h HS TX Boost 00h 31h 31h - - Reserved 00h 32h 32h - - Headset Audio Mode 00h 33h 33h - - REGISTER NAME SMSC USB3320 61 1Ch DATASHEET 22-30h Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Table 7.1 ULPI Register Map (continued) ADDRESS (6BIT) DEFAULT STATE REGISTER NAME READ WRITE SET CLEAR Reserved 00h Vendor Rid Conversion 00h 36-38h 36h 37h 38h USB IO & Power Management 04h 39-3Bh 39h 3Ah 3Bh Reserved 00h Note 7.1 7.1.1 34-35h 3C-3Fh Dynamically updates to reflect current status of interrupt sources. ULPI Register Set The following registers are used for the ULPI interface. 7.1.1.1 Vendor ID Low Address = 00h (read only) FIELD NAME BIT ACCESS DEFAULT Vendor ID Low 7:0 rd 24h 7.1.1.2 DESCRIPTION SMSC Vendor ID Vendor ID High Address = 01h (read only) FIELD NAME BIT ACCESS DEFAULT Vendor ID High 7:0 rd 04h 7.1.1.3 DESCRIPTION SMSC Vendor ID Product ID Low Address = 02h (read only) FIELD NAME BIT ACCESS DEFAULT Product ID Low 7:0 rd 07h 7.1.1.4 DESCRIPTION SMSC Product ID Product ID High Address = 03h (read only) Revision 1.0 (07-14-09) 62 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet FIELD NAME BIT ACCESS DEFAULT Product ID High 7:0 rd 00h 7.1.1.5 DESCRIPTION SMSC Product ID Function Control Address = 04-06h (read), 04h (write), 05h (set), 06h (clear) FIELD NAME BIT ACCESS DEFAULT XcvrSelect[1:0] 1:0 rd/w/s/c 01b Selects the required transceiver speed. 00b: Enables HS transceiver 01b: Enables FS transceiver 10b: Enables LS transceiver 11b: Enables FS transceiver for LS packets (FS preamble automatically pre-pended) 2 rd/w/s/c 0b Controls the DP and DM termination depending on XcvrSelect, OpMode, DpPulldown, and DmPulldown. The DP and DM termination is detailed in Table 5.1. 4:3 rd/w/s/c 00b Selects the required bit encoding style during transmit. 00b: Normal Operation 01b: Non-Driving 10b: Disable bit-stuff and NRZI encoding 11b: Reserved Reset 5 rd/w/s/c 0b Active high transceiver reset. This reset does not reset the ULPI interface or register set. Automatically clears after reset is complete. SuspendM 6 rd/w/s/c 1b Active low PHY suspend. When cleared the transceiver will enter Low Power Mode as detailed in 6.3. Automatically set when exiting Low Power Mode. Reserved 7 rd 0b Read only, 0. TermSelect OpMode 7.1.1.6 DESCRIPTION Interface Control Address = 07-09h (read), 07h (write), 08h (set), 09h (clear) FIELD NAME BIT ACCESS DEFAULT 6-pin FsLsSerialMode 0 rd/w/s/c 0b When asserted the ULPI interface is redefined to the 6-pin Serial Mode. The transceiver will automatically clear this bit when exiting serial mode. 3-pin FsLsSerialMode 1 rd/w/s/c 0b When asserted the ULPI interface is redefined to the 3-pin Serial Mode. The transceiver will automatically clear this bit when exiting serial mode. CarkitMode 2 rd/w/s/c 0b When asserted the ULPI interface is redefined to the Carkit interface. The transceiver will automatically clear this bit when exiting Carkit Mode. SMSC USB3320 63 DESCRIPTION DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet FIELD NAME BIT ACCESS DEFAULT DESCRIPTION ClockSuspendM 3 rd/w/s/c 0b Enables Link to turn on 60MHz CLKOUT in Serial Mode or Carkit Mode. 0b: Disable clock in serial or Carkit Mode. 1b: Enable clock in serial or Carkit Mode. AutoResume 4 rd/w/s/c 0b Only applicable in Host mode. Enables the transceiver to automatically transmit resume signaling. This function is detailed in Section 6.2.4.4. IndicatorComplement 5 rd/w/s/c 0b Inverts the EXTVBUS signal. This function is detailed in Section 5.6.2. Note: IndicatorPassThru 6 rd/w/s/c 0b Disables and’ing the internal VBUS comparator with the EXTVBUS signal when asserted. This function is detailed in Section 5.6.2. Note: InterfaceProtectDisable 7.1.1.7 7 rd/w/s/c The EXTVBUS signal is always high on the USB3320. 0b The EXTVBUS signal is always high on the USB3320. Used to disable the integrated STP pull-up resistor used for interface protection. This function is detailed in Section 6.3.3. OTG Control Address = 0A-0Ch (read), 0Ah (write), 0Bh (set), 0Ch (clear) FIELD NAME BIT ACCESS DEFAULT IdPullup 0 rd/w/s/c 0b Connects a 100kΩ pull-up resistor from the ID pin to VDD33 0b: Disables the pull-up resistor 1b: Enables the pull-up resistor DpPulldown 1 rd/w/s/c 1b Enables the 15k Ohm pull-down resistor on DP. 0b: Pull-down resistor not connected 1b: Pull-down resistor connected DmPulldown 2 rd/w/s/c 1b Enables the 15k Ohm pull-down resistor on DM. 0b: Pull-down resistor not connected 1b: Pull-down resistor connected DischrgVbus 3 rd/w/s/c 0b This bit is only used during SRP. Connects a resistor from VBUS to ground to discharge VBUS. 0b: disconnect resistor from VBUS to ground 1b: connect resistor from VBUS to ground ChrgVbus 4 rd/w/s/c 0b This bit is only used during SRP. Connects a resistor from VBUS to VDD33 to charge VBUS above the SessValid threshold. 0b: disconnect resistor from VBUS to VDD33 1b: connect resistor from VBUS to VDD33 DrvVbus 5 rd/w/s/c 0b Enables external 5 volt supply to drive 5 volts on VBUS. This signal is or’ed with DrvVbusExternal. 0b: Do not drive Vbus, CPEN driven low. 1b: Drive Vbus, CPEN driven high. Revision 1.0 (07-14-09) 64 DESCRIPTION DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet FIELD NAME BIT ACCESS DEFAULT DESCRIPTION DrvVbusExternal 6 rd/w/s/c 0b Enables external 5 volt supply to drive 5 volts on VBUS. This signal is or’ed with DrvVbus. 0b: Do not drive Vbus, CPEN driven low. 1b: Drive Vbus, CPEN driven high. UseExternalVbus Indicator 7 rd/w/s/c 0b Tells the transceiver to use an external VBUS overcurrent or voltage indicator. This function is detailed in Section 5.6.2. 0b: Use the internal VbusValid comparator 1b: Use the EXTVBUS input as for VbusValid signal. Note: 7.1.1.8 The EXTVBUS signal is always high on the USB3320. USB Interrupt Enable Rising Address = 0D-0Fh (read), 0Dh (write), 0Eh (set), 0Fh (clear) FIELD NAME BIT ACCESS DEFAULT HostDisconnect Rise 0 rd/w/s/c 1b Generate an interrupt event notification when Hostdisconnect changes from low to high. Applicable only in host mode. VbusValid Rise 1 rd/w/s/c 1b Generate an interrupt event notification when Vbusvalid changes from low to high. SessValid Rise 2 rd/w/s/c 1b Generate an interrupt event notification when SessValid changes from low to high. SessEnd Rise 3 rd/w/s/c 1b Generate an interrupt event notification when SessEnd changes from low to high. IdGnd Rise 4 rd/w/s/c 1b Generate an interrupt event notification when IdGnd changes from low to high. 7:5 rd 000b Reserved 7.1.1.9 DESCRIPTION Read only, 0. USB Interrupt Enable Falling Address = 10-12h (read), 10h (write), 11h (set), 12h (clear) FIELD NAME BIT ACCESS DEFAULT HostDisconnect Fall 0 rd/w/s/c 1b Generate an interrupt event notification when Hostdisconnect changes from high to low. Applicable only in host mode. VbusValid Fall 1 rd/w/s/c 1b Generate an interrupt event notification when Vbusvalid changes from high to low. SessValid Fall 2 rd/w/s/c 1b Generate an interrupt event notification when SessValid changes from high to low. SessEnd Fall 3 rd/w/s/c 1b Generate an interrupt event notification when SessEnd changes from high to low. IdGnd Fall 4 rd/w/s/c 1b Generate an interrupt event notification when IdGnd changes from high to low. SMSC USB3320 65 DESCRIPTION DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet FIELD NAME BIT ACCESS DEFAULT Reserved 7:5 rd 000b 7.1.1.10 DESCRIPTION Read only, 0. USB Interrupt Status Address = 13h (read only) This register dynamically updates to reflect current status of interrupt sources. FIELD NAME BIT HostDisconnect 0 VbusValid 1 SessValid ACCESS DEFAULT DESCRIPTION 0b Current value of the UTMI+ Hi-Speed Hostdisconnect output. Applicable only in host mode. rd 0b Current value of the UTMI+ Vbusvalid output. 2 rd 0b Current value of the UTMI+ SessValid output. SessEnd 3 rd 0b Current value of the UTMI+ SessEnd output. IdGnd 4 rd 0b Current value of the UTMI+ IdGnd output. 7:5 rd 000b Reserved rd Read only, 0. Note: The default conditions will match the current status of the comparators. The values shown are for an unattached OTG device. 7.1.1.11 USB Interrupt Latch Address = 14h (read only with auto clear) FIELD NAME BIT HostDisconnect Latch 0 VbusValid Latch 1 SessValid Latch 2 SessEnd Latch 3 IdGnd Latch 4 Reserved 7:5 Note 7.2 Revision 1.0 (07-14-09) ACCESS rd (Note 7.2) rd (Note 7.2) rd (Note 7.2) rd (Note 7.2) rd (Note 7.2) rd DEFAULT DESCRIPTION 0b Set to 1b by the transceiver when an unmasked event occurs on Hostdisconnect. Cleared when this register is read. Applicable only in host mode. 0b Set to 1b by the transceiver when an unmasked event occurs on VbusValid. Cleared when this register is read. 0b Set to 1b by the transceiver when an unmasked event occurs on SessValid. Cleared when this register is read. 0b Set to 1b by the transceiver when an unmasked event occurs on SessEnd. Cleared when this register is read. 0b Set to 1b by the transceiver when an unmasked event occurs on IdGnd. Cleared when this register is read. 000b Read only, 0. rd: Read Only with auto clear. 66 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 7.1.1.12 Debug Address = 15h (read only) FIELD NAME BIT ACCESS DEFAULT Linestate0 0 rd 0b Contains the current value of Linestate[0]. Linestate1 1 rd 0b Contains the current value of Linestate[1]. Reserved 7:2 rd 000000b 7.1.1.13 DESCRIPTION Read only, 0. Scratch Register Address = 16-18h (read), 16h (write), 17h (set), 18h (clear) FIELD NAME BIT ACCESS DEFAULT Scratch 7:0 rd/w/s/c 00h 7.1.2 DESCRIPTION Empty register byte for testing purposes. Software can read, write, set, and clear this register and the transceiver functionality will not be affected. Carkit Control Registers The following registers are used to set-up and enable the USB UART and USB Audio functions. 7.1.2.1 Carkit Control Address = 19-1Bh (read), 19h (write), 1Ah (set), 1Bh (clear) This register is used to program the USB3320 into and out of the Carkit Mode. When entering the UART mode the Link must first set the desired TxdEn and the RxdEn bits and then transition to Carkit Mode by setting the CarkitMode bit in the Interface Control Register. When RxdEn is not set then the DATA[1] pin is held to a logic high. FIELD NAME BIT ACCESS DEFAULT DESCRIPTION CarkitPwr 0 rd 0b Read only, 0. IdGndDrv 1 rd/w/s/c 0b Drives ID pin to ground TxdEn 2 rd/w/s/c 0b Connects UART TXD (DATA[0]) to DM RxdEn 3 rd/w/s/c 0b Connects UART RXD (DATA[1]) to DP SpkLeftEn 4 rd/w/s/c 0b Connects DM pin to SPK_L pin SpkRightEn 5 rd/w/s/c 0b Connects DP pin to SPK_R pin. See Note below. MicEn 6 rd/w/s/c 0b Connects DP pin to SPK_R pin. See Note below. Reserved 7 rd 0b Read only, 0. Note: If SpkRightEn or MicEn are asserted the DP pin will be connected to SPK_R. To disconnect the DP pin from the SPK_R pin both SpkrRightEn and MicEn must be set to de-asserted. SMSC USB3320 67 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet If using USB UART mode the UART data will appear at the SPK_L and SPK_R pins if the corresponding SpkLeftEn, SpkRightEn, or MicEn switches are enabled. If using USB Audio the TxdEn and RxdEn bits should not be set when the SpkLeftEn, SpkRightEn, or MicEn switches are enabled. The USB single-ended receivers described in Section 5.2.1 are disabled when either SpkLeftEn, SpkRightEn, or MicEn are set. 7.1.2.2 Carkit Interrupt Enable Address = 1D-1Fh (read), 1Dh (write), 1Eh (set), 1Fh (clear) FIELD NAME BIT ACCESS DEFAULT DESCRIPTION IdFloatRise 0 rd/w/s/c 0b When enabled an interrupt will be generated on the alt_int of the RXCMD byte when the ID pin transitions from non-floating to floating. The IdPullup bit in the OTG Control register should be set. IdFloatFall 1 rd/w/s/c 0b When enabled an interrupt will be generated on the alt_int of the RXCMD byte when the ID pin transitions from floating to non-floating. The IdPullup bit in the OTG Control register should be set. CarIntDet 2 rd 0b Not Implemented. Reads as 0b. CarDpRise 3 rd 0b Not Implemented. Reads as 0b. CarDpFall 4 rd 0b Not Implemented. Reads as 0b. RidIntEn 5 rd/w/s/c 0b When enabled an interrupt will be generated on the alt_int of the RXCMD byte when RidConversionDone bit is asserted. Note: Reserved 7.1.2.3 7:6 rd 00b This register bit is or’ed with the RidIntEn bit of the Vendor Rid Conversion register described in Section 7.1.3.3. Read only, 0. Carkit Interrupt Status Address = 20h (read only) FIELD NAME BIT ACCESS DEFAULT IdFloat 0 rd 0b Asserted when the ID pin is floating. IdPullup must be enabled. CarIntDet 1 rd 0b Not Implemented. Reads as 0b. CarDp 2 rd 0b Not Implemented. Reads as 0b. Revision 1.0 (07-14-09) 68 DESCRIPTION DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet FIELD NAME BIT ACCESS DEFAULT RidValue 5:3 rd 000b DESCRIPTION Conversion value of Rid resistor 000: 0 ohms 001: 75 ohms 010: 102K ohms 011: 200K ohms 100: 440K ohms 101: ID floating 111: Error Note: RidConversionDone 6 rd 0b Automatically asserted by the USB3320 when the Rid Conversion is finished. The conversion will take 282uS. This bit will auto clear when the RidValue is read from the Rid Conversion Register. Reading the RidValue from the Carkit Interrupt Status register will not clear either RidConversionDone status bit. Note: Reserved 7.1.2.4 7 rd RidValue can also be read from the Vendor Rid Conversion register described in Section 7.1.3.3. 0b RidConversionDone can also be read from the Vendor Rid Conversion register described in Section 7.1.3.3. Read only, 0. Carkit Interrupt Latch Address = 21h (read only with auto-clear) FIELD NAME BIT ACCESS DEFAULT IdFloat Latch 0 rd (Note 7.3) 0b Asserted if the state of the ID pin changes from nonfloating to floating while the IdFloatRise bit is enabled or if the state of the ID pin changes from floating to non-floating while the IdFloatFall bit is enabled. CarIntDet Latch 1 rd 0b Not Implemented. Reads as 0b. CarDp Latch 2 rd 0b Not Implemented. Reads as 0b. RidConversionLatch 3 rd (Note 7.3) 0b If RidIntEn is set and the state of the RidConversionDone bit changes from a 0 to 1 this bit will be asserted. 7:4 rd 0000b Reserved Note 7.3 SMSC USB3320 DESCRIPTION Read only, 0. rd: Read Only with auto clear 69 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 7.1.3 Vendor Register Access The vendor specific registers include the range from 30h to 3Fh. These can be accessed by the ULPI immediate register read / write. 7.1.3.1 HS TX Boost Address = 31h (read / write) FIELD NAME BIT ACCESS DEFAULT Reserved 4:0 rd 00000b Boost 6:5 rd/w 00b Sets the HS transmitter amplitude as described in Section 5.2.1. 00b: Nominal 01b: Enables 11.1% increased drive strength 10b: Enables 7.4% increased drive strength 11b: Enables 3.7% increased drive strength 7 rd 0b Read only, 0. Reserved 7.1.3.2 DESCRIPTION Read only, 0. Headset Audio Mode Address = 33h (read / write) FIELD NAME BIT ACCESS DEFAULT HeadsetAudioEn 3:0 rd/w 0000b Reserved 7:4 rd 0h 7.1.3.3 DESCRIPTION When this field is set to a value of 1010, the Headset Audio Mode is enabled as described in Section 6.7. Read only, 0. Vendor Rid Conversion Address = 36-38h (read), 36h (write), 37h (set), 38h (clear) FIELD NAME BIT ACCESS DEFAULT RidValue 2:0 rd/w 000b DESCRIPTION Conversion value of Rid resistor 000: 0 ohms 001: 75 ohms 010: 100K ohms 011: 200K ohms 100: 440K ohms 101: ID floating 111: Error Note: Revision 1.0 (07-14-09) 70 DATASHEET RidValue can also be read from the Carkit Interrupt Status Register. SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet FIELD NAME RidConversionDone BIT ACCESS DEFAULT 3 rd (Note 7.4) 0b DESCRIPTION Automatically asserted by the USB3320 when the Rid Conversion is finished. The conversion will take 282uS. This bit will auto clear when the RidValue is read from the Rid Conversion Register. Reading the RidValue from the Carkit Interrupt Status Register will not clear either RidConversionDone status bit. Note: RidConversionDone can also be read from the Carkit Interrupt Status Register. RidConversionStart 4 rd/w/s/c 0b When this bit is asserted either through a register write or set, the Rid converter will read the value of the ID resistor. When the conversion is complete this bit will auto clear. Reserved 5 rd/w/s/c 0b This bit must remain at 0. RidIntEn 6 rd/w/s/c 0b When enabled an interrupt will be generated on the alt_int of the RXCMD byte when RidConversionDone bit is asserted. Note: Reserved 7 Note 7.4 7.1.3.4 rd 0b This register bit is or’ed with the RidIntEn bit of the Carkit Interrupt Status register. Read only, 0. rd: Read Only with auto clear. USB IO & Power Management Address = 39-3Bh (read), 39h (write), 3Ah (set), 3Bh (clear) FIELD NAME BIT ACCESS DEFAULT Reserved 0 rd/w/s/c 0b Read only, 0. SwapDP/DM 1 rd/w/s/c 0b When asserted, the DP and DM pins of the USB transceiver are swapped. This bit can be used to prevent crossing the DP/DM traces on the board. In UART mode, it swaps the routing to the DP and DM pins. In USB Audio Mode, it does not affect the SPK_L and SPK_R pins. 3:2 rd/w/s/c 01b Controls the output voltage of the VBAT to VDD33 regulator in UART mode. When the transceiver is switched from USB mode to UART mode regulator output will automatically change to the value specified in this register when TxdEn is asserted. 00: 3.3V 01: 3.0V (default) 10: 2.75V 11: 2.5V UART RegOutput DESCRIPTION Note: ChargerPullupEnDP SMSC USB3320 4 rd/w/s/c 0b When in USB Audio Mode the regulator will remain at 3.3V. When using this register it is recommended that the Link exit UART mode by using the RESETB pin. Enables a Pull-up for USB Charger Detection when set on the DP pin. (The pull-up is automatically enabled in UART mode) 71 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet FIELD NAME ChargerPullupEnDM USB RegOutput Revision 1.0 (07-14-09) BIT ACCESS DEFAULT 5 rd/w/s/c 0b Enables a Pull-up for USB Charger Detection when set on the DM pin. (The pull-up is automatically enabled in UART mode) 7:6 rd/w/s/c 00b Controls the output voltage of the VBAT to VDD33 regulator in USB mode. When the transceiver is in Synchronous Mode, Serial Mode, or Low Power Mode, the regulator output will be the value specified in this register. 00: 3.3V (default) 01: 3.0V 10: 2.75V 11: 2.5V 72 DESCRIPTION DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 8 Application Notes 8.1 Application Diagram The USB3320 requires few external components as shown in the application diagrams. The USB 2.0 Specification restricts the voltage at the VBUS pin to a maximum value of 5.25V. In some applications, the voltage will exceed this voltage, and the USB3320 provides an integrated overvoltage protection circuit. The overvoltage protection circuit works with an external resistor (RVBUS) to lower the voltage at the VBUS pin, as described in Section 5.6.2.6. Following POR or hardware reset, the voltage at CLKOUT must not exceed VIH_ED as provided in Table 4.4. Table 8.1 Component Values in Application Diagrams REFERENCE DESIGNATOR VALUE DESCRIPTION NOTES COUT 2.2μF Bypass capacitor to ground (<1Ω ESR) for regulator stability. Place as close as possible to the transceiver. CVBUS See Table 8.2 Capacitor to ground required by the USB Specification. SMSC recommends <1Ω ESR. Place near the USB connector. CBYP System dependent. Bypass capacitor to ground. Typical values used are 0.1 or 0.01 μF. Place as close as possible to the transceiver. CDC_LOAD System dependent. The USB connector housing may be ACcoupled to the device ground. Industry convention is to ground only the host side of the cable shield. RVBUS 1kΩ or 10kΩ Series resistor to work with internal overvoltage protection. 10kΩ in device applications. See Table 5.7 for required values in Host or OTG applications. See Section 5.6.2.6 for information regarding power dissipation. RBIAS 8.06kΩ (±1%) Series resistor to establish reference voltage. See Section 5.3 for information regarding power dissipation. Table 8.2 Capacitance Values at VBUS of USB Connector MODE MIN VALUE Host 120μF Device 1μF 10μF OTG 1μF 6.5μF SMSC USB3320 MAX VALUE 73 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet VDDIO Supply RVBUS must be installed to enable overvoltage protection of the VBUS pin. 14 11 8 RVBUS 3.1-5.5V Supply The capacitor CVBUS must be installed on this side of RVBUS. USB Receptacle REFSEL2 REFSEL1 REFSEL0 22 VBUS 17 25 CPEN XO 21 VBAT 20 VDD33 CBYP CVBUS COUT 23 ID DM 19 DM DP 18 DP 15 SPK_L 16 SPK_R GND CDC_BLOCK RESETB RESETB DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 STP NXT DIR CLKOUT 13 10 9 7 6 5 4 3 29 2 31 1 DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 STP NXT DIR CLKIN REFCLK 26 VBUS SHIELD Link Controller 27 Signal at REFCLK must comply with VIH and VIL REFCLK VDDIO Supply VDDIO 32 1.8V Supply VDD18 28, 30 CBYP CBYP RBIAS 24 GND RBIAS Optional Switched Signal to DP/DM Figure 8.1 USB3320 Application Diagram (Device, ULPI Output Clock mode, 24MHz) Revision 1.0 (07-14-09) 74 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet VDDIO Supply RVBUS must be installed to enable overvoltage protection of the VBUS pin. 14 11 8 RVBUS 3.1-5.5V Supply The capacitor CVBUS must be installed on this side of RVBUS. USB Receptacle REFSEL2 REFSEL1 REFSEL0 22 VBUS 17 25 CPEN XO 21 VBAT 20 VDD33 CBYP CVBUS ID DM 19 DM DP 18 DP 15 SPK_L 16 SPK_R CDC_BLOCK RESETB DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 STP NXT DIR 13 10 9 7 6 5 4 3 29 2 31 DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 STP NXT DIR REFCLK 26 VBUS GND RESETB COUT 23 SHIELD Link Controller 27 CLKOUT ULPI Clock In Mode VDDIO Supply CLKOUT 1 VDDIO 32 1.8V Supply VDD18 28, 30 CBYP CBYP RBIAS GND 24 RBIAS Optional Switched Signal to DP/DM Figure 8.2 USB3320 Application Diagram (Device, ULPI Input Clock mode, 60MHz) SMSC USB3320 75 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet VDDIO Supply VBUS Switch EN 5V IN OUT The capacitor CVBUS must be installed on this side of RVBUS. RVBUS must be installed to enable overvoltage protection of the VBUS pin. RVBUS 14 11 8 REFSEL2 REFSEL1 REFSEL0 17 CPEN 22 VBUS Link Controller RESETB 27 RESETB DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 STP NXT DIR CLKOUT 13 10 9 7 6 5 4 3 29 2 31 1 DATA7 DATA6 DATA5 DATA4 DATA3 DATA2 DATA1 DATA0 STP NXT DIR CLKIN XO 25 3.1-5.5V Supply 21 VBAT 20 VDD33 Resonator 1MΩ CBYP USB Receptacle CVBUS REFCLK - or - 26 COUT VBUS ID 23 ID DM 19 DM DP 18 DP SHIELD GND For Host applications (non-OTG), the ID pin should be connected to GND. Crystal and Caps CLOAD 15 16 VDDIO Supply VDDIO 32 VDD18 28, 30 RBIAS 24 1.8V Supply CBYP CBYP SPK_L SPK_R GND RBIAS Optional Switched Signal to DP/DM Figure 8.3 USB3320 Application Diagram (Host or OTG, ULPI Output Clock Mode, 24MHz) 8.2 Reference Designs SMSC has generated reference designs for connecting the USB3320 to SOCs with a ULPI port. Please contact the SMSC sales office for more details. 8.3 ESD Performance The USB3320 is protected from ESD strikes. By eliminating the requirement for external ESD protection devices, board space is conserved, and the board manufacturer is enabled to reduce cost. The advanced ESD structures integrated into the USB3320 protect the device whether or not it is powered up. Revision 1.0 (07-14-09) 76 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet 8.3.1 Human Body Model (HBM) Performance HBM testing verifies the ability to withstand the ESD strikes like those that occur during handling and manufacturing, and is done without power applied to the IC. To pass the test, the device must have no change in operation or performance due to the event. All pins on the USB3320 except the REFCLK, SPK_L, and SPK_R pins provide ±8kV HBM protection, as shown in Table 4.10. 8.3.2 EN/IEC 61000-4-2 Performance The EN/IEC 61000-4-2 ESD specification is an international standard that addresses system-level immunity to ESD strikes while the end equipment is operational. In contrast, the HBM ESD tests are performed at the device level with the device powered down. SMSC contracts with Independent laboratories to test the USB3320 to EN/IEC 61000-4-2 in a working system. Reports are available upon request. Please contact your SMSC representative, and request information on 3rd party ESD test results. The reports show that systems designed with the USB3320 can safely provide the ESD performance shown in Table 4.10 without additional board level protection. In addition to defining the ESD tests, EN/IEC 61000-4-2 also categorizes the impact to equipment operation when the strike occurs (ESD Result Classification). The USB3320 maintains an ESD Result Classification 1 or 2 when subjected to an EN/IEC 61000-4-2 (level 4) ESD strike. Both air discharge and contact discharge test techniques for applying stress conditions are defined by the EN/IEC 61000-4-2 ESD document. 8.3.3 Air Discharge To perform this test, a charged electrode is moved close to the system being tested until a spark is generated. This test is difficult to reproduce because the discharge is influenced by such factors as humidity, the speed of approach of the electrode, and construction of the test equipment. 8.3.4 Contact Discharge The uncharged electrode first contacts the USB connector to prepare this test, and then the probe tip is energized. This yields more repeatable results, and is the preferred test method. The independent test laboratories contracted by SMSC provide test results for both types of discharge methods. SMSC USB3320 77 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 9 Package Outline, Tape & Reel Drawings, Package Marking The USB3320 is offered in a compact 32 pin lead-free QFN package. Figure 9.1 USB3320 32 Pin QFN Package Outline, 5 x 5 x 0.9 mm Body (Lead-Free) Table 9.1 32 Terminal QFN Package Parameters A A1 A2 A3 D D1 D2 E E1 E2 L e b ccc MIN 0.70 0 ~ 4.85 4.55 3.15 4.85 4.55 3.15 0.30 0.18 ~ NOMINAL ~ 0.02 ~ 0.20 REF 5.0 ~ 3.3 5.0 ~ 3.3 ~ 0.50 BSC 0.25 ~ MAX 1.00 0.05 0.90 5.15 4.95 3.45 5.15 4.95 3.45 0.50 0.30 0.08 REMARKS Overall Package Height Standoff Mold Thickness Copper Lead-frame Substrate X Overall Size X Mold Cap Size X exposed Pad Size Y Overall Size Y Mold Cap Size Y exposed Pad Size Terminal Length Terminal Pitch Terminal Width Coplanarity Notes: 1. Controlling Unit: millimeter. 2. Dimension b applies to plated terminals and is measured between 0.15mm and 0.30mm from the terminal tip. Tolerance on the true position of the leads is ± 0.05 mm at maximum material conditions (MMC). 3. Details of terminal #1 identifier are optional but must be located within the zone indicated. 4. Coplanarity zone applies to exposed pad and terminals. Revision 1.0 (07-14-09) 78 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Figure 9.2 QFN, 5x5 Taping Dimensions and Part Orientation SMSC USB3320 79 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Figure 9.3 Reel Dimensions for 12mm Carrier Tape Revision 1.0 (07-14-09) 80 DATASHEET SMSC USB3320 Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Figure 9.4 Tape Length and Part Quantity Note: Standard reel size is 4000 pieces per reel. Figure 9.5 Package Marking SMSC USB3320 81 DATASHEET Revision 1.0 (07-14-09) Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver Datasheet Chapter 10 Revision History Table 10.1 Customer Revision History REVISION LEVEL & DATE Rev. 1.0 (07-14-09) Revision 1.0 (07-14-09) SECTION/FIGURE/ENTRY CORRECTION Initial Release 82 DATASHEET SMSC USB3320