STOTG04E USB-OTG Full-speed Transceiver Feature summary Meets USB specification Rev. 2.0 And on-the- go supplement to the USB 2.0 specification Analog car kit-compatible 2 Four operating modes: USB, I C, UART and Audio QFN24 (4mmx4mm) 2 Configurable using I C serial interface Capable of 12Mbit/s full-speed and 1.5Mbit/s low-speed modes of operation Description Standard digital interface compliant with the OTG transceiver specification The STOTG04 is a USB On-The-Go full-speed transceiver. It provides complete physical layer Supports the session request protocol (SRP) (PHY) solution for any USB-OTG device. It and host negotiation protocol (HNP) contains V charge pump and comparators, ID BUS 35mA typical V charge pump output current BUS line detector and interrupt generator, and the USB for 3.3V supply voltage differential driver and receivers. The STOTG04 Ability to control external charge pump for transceiver is suitable for mobile and battery higher VBUS currents powered devices because of its low power consumption and power-down operating mode. Integrated pull-up/-down resistors The transceiver is capable of operation in several 6kV ESD Protection on all USB pins (contact different modes. It can operate in basic USB-OTG discharge) 2 mode, as an I C and UART transceiver, or in +1.6V to +3.6V Digital power supply and +2.7V audio mode. Behavior of the transceiver is fully to +5.5V analog supply voltage range 2 configurable through the two-wire I C serial bus. Power-down mode with very low power The transceiver supports session request protocol consumption for battery powered devices and host negotiation protocol. The applications are mobile phones, PDAs, MP3 Applications players, printers and digital cameras. Mobile phones PDAs MP3 players Digital cameras Printers Order code Part number Package Packaging STOTG04EQTR QFN24 (4mm x 4mm) 4000 parts per reel October 2006 Rev. 3 1/26 www.st.com 26Contents STOTG04E Contents 1 Pin configuration . 3 2 Maximum ratings 5 3 Electrical characteristics . 6 4 Charge pump characteristics 10 5 Timing diagrams . 11 6 Block description 14 6.1 Charge pump 14 6.2 V Comparators 14 BUS 6.3 Voltage regulator 14 6.4 ID Line detector . 14 6.5 Driver and receivers . 14 6.6 Control logic . 15 6.7 Modes of operation 15 6.7.1 Power modes . 15 6.7.2 USB Modes 15 2 6.7.3 UART and I C modes 16 6.7.4 Audio mode 17 6.8 Registers 17 2 6.9 I C Bus interface 19 6.10 Device address . 19 6.11 Bus protocol . 19 6.12 External charge pump switch 21 7 Package mechanical data 22 8 Revision history 25 2/26