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UM0212 Datasheet(PDF) 7 Page - STMicroelectronics |
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UM0212 Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 13 page UM0212 STOTG04 demonstration board hardware 7/13 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 ● I2C bus, and ● 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. Demonstration board connectors(1) 1. See Figure 4. Connector Descriptions CON1 Power supply pins (P7-P14): VBAT, VIF, and GND 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 DSUB-9 connector for the PC serial port used to control the transceiver through the I2C bus Table 3. CON3 pin assignments Pin No. Description Pin no. Description 1 GND 8 SPEED 2 Not connected 9 VM 3 SCL (I2C clock signal) 10 OE_TP_INT 4 SDA (I2C data signal) 11 RVC 5INT 12 VP 6 RESET 13 DAT_VP 7 SUSPEND 14 SE0_VM |
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