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STUSB1600 Scheda tecnica(PDF) 11 Page - STMicroelectronics |
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STUSB1600 Scheda tecnica(HTML) 11 Page - STMicroelectronics |
11 / 69 page DocID028937 Rev 1 11/69 STUSB1600 Inputs/outputs 69 2.3.10 A_B_SIDE This output pin provides cable orientation. It is used to establish USB SuperSpeed signal routing. The cable orientation is also advertised in a dedicated I2C register bit (see Section 5.1: Register description). This signal is not required in case of USB 2.0 support. 2.3.11 VBUS_SENSE This input pin is used to sense VBUS presence, monitor VBUS voltage, and discharge VBUS on the USB Type-C receptacle side. 2.3.12 VBUS_EN_SNK In sink power role, this pin allows the incoming VBUS power to be enabled when the connection to a source is established and VBUS is in the valid operating range. The open drain output allows a PMOS transistor to be directly driven. The logic value of the pin is also advertised in a dedicated I2C register bit (see Section 5.1: Register description). 2.3.13 VBUS_EN_SRC In source power role, this pin allows the outgoing VBUS power to be enabled when the connection to a sink is established and VBUS is in the valid operating range. The open drain output allows a PMOS transistor to be directly driven. The logic value of the pin is also advertised in a dedicated I2C register bit (see Section 5.1: Register description). 2.3.14 VREG1V2 This pin is used only for external decoupling of the 1.2 V internal regulator. The recommended decoupling capacitor is: 1 µF typ. (0.5 µF min, 10 µF max). 2.3.15 VSYS This is the low power supply from the system, if there is any. It can be connected directly to a single cell Lithium battery or to the system power supply delivering 3.3 V or 5 V. It is recommended to connect this pin to ground when it is not used. 2.3.16 VREG2V7 This pin is used only for external decoupling of the 2.7 V internal regulator. The recommended decoupling capacitor is: 1 µF typ. (0.5 µF min, 10 µF max). Table 6. USB data mux select Value CC pin position HiZ CC1 pin is attached to CC line 0 CC2 pin is attached to CC line |
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