UM0212

STOTG04 demonstration board hardware

3/13

1

STOTG04 demonstration board hardware

The demonstration board consists of six main parts (see Figure 2 and Figure 3).

●

●

Level shifters

●

The STOTG04 full-speed transceiver

●

Configuration jumpers

●

A USB OTG controller connector

●

A reset switch (see Section 1.5).

The STOTG04 needs two types of power supply voltages to function (see Section 1.1). The

connected to the demonstration board through the power pins.

The board can also be controlled by a PC serial port (see Section 1.2). The RS-232C PC

The jumpers allow users to test and measure the STOTG04 characteristics without a USB

OTG controller (see Section 1.3).

The USB OTG controller header connector enables the user to connect a USB OTG

controller (see CON3 pin) or any digital control system to the demonstration board. USB or

USB OTG devices can be connected via the mini-AB connector (see Appendix A: STOTG04

demonstration board schematics).

Figure 2.

STOTG04 demonstration board block diagram

DB-9

Serial Port

Connector

USB OTG

Controller

Header

Connector

Jumpers

RESET

RS232C

↔ I2C

Level Shifters

STOTG04

USB OTG

Full-speed

Transceiver

Power Pins (VBAT, VIF)

I

2

C signals

Mini-AB

Connector

VBUS, DP, DM, ID

AI11879

INT, SUSPEND,

DAT_VP, SE0_VM,

RCV, VM, VP,

RESET, SPEED,

OE_TP_INT