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November 2008 Rev 2 1/13
UM0212
User manual
STOTG04 USB OTG full-speed
transceiver demonstration board
Introduction
This manual explains how to use and take full advantage of the STOTG04 universal serial
bus (USB) on-the-go (OTG) full-speed transceiver demonstration board, which is designed
to help users evaluate their USB OTG applications. The PC board (PCB) connections make
it possible to test the STOTG04 transceiver while it is connected to the USB OTG controller.
Without the controller, the STOTG04 is configurable through the I
2
C interface.
The STOTG04 is fully compliant with the USB v2.0 specification and the on-the-go
supplement to this specification (see http://www.usb.org for details). It provides a complete
physical layer (PHY) solution for any USB OTG device. When the STOTG04 is connected to
a USB OTG controller, it is ideal for use with several mobile applications (such as cell
phones, digital cameras, printers and PDAs).
The STOTG04 transceiver is controlled by the "USB OTG Demo" software that runs on
Microsoft Windows operating systems. This software enables designers to configure and
monitor the transceiver’s internal registers.
Figure 1. STOTG04 demonstration board
www.st.com
