UM0212

STOTG04 demonstration board hardware

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1.4

Connector assignments

1.4.1

CON3 pin

The USB OTG controller accesses the USBOTG04’s SIE through the CON3 connector and

controls the following signals (see Table 3):

●

DAT_VP

●

SE0_VM

●

RCV

●

OE_TP_INT

●

●

other main signals used by most types of OTG controllers.

Warning:

The Q1 and Q3 transistor bases MUST be connected to GND

BEFORE the demonstration board is connected to the USB OTG

controller. The Q1 and Q3 bases are connected to the R1 and R3

resistors (see Appendix A: STOTG04 demonstration board

schematics).

Table 2.

1.

See Figure 4.

Connector

Descriptions

CON1

CON2

USB Mini-AB connector for USB/USB OTG devices

CON3

Header connector for the USB OTG controller via the serial interface engine (SIE)

signals (see Section 1.4.1)

CON4

bus

Table 3.

CON3 pin assignments

Pin No.

Description

Pin no.

Description

1

GND

8

SPEED

2

Not connected

9

VM

3

10

OE_TP_INT

4

11

RVC

5INT

12

VP

6

RESET

13

DAT_VP

7

SUSPEND

14

SE0_VM