STG3220QTR datasheet(5/23 Pages) STMICROELECTRONICS

部件名	STG3220QTR

功能描述	Low voltage high bandwidth dual SPDT switch

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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5 / 23 page

STG3220

Dedicated port charging detection

Doc ID 15647 Rev 1

5/23

3

Dedicated port charging detection

The STG3220 has a built-in dedicated port charging detection circuit to detect the condition

when the USB D+/D- lines are both in high state. When this occurs, the device sends an

interrupt signal to the processor to indicate that the connected USB device is in dedicated

port charging mode.

Figure 4.

Interrupt function logic representation

D1

D2

1S1

1S2

2S1

2S2

SEL

INT

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