STG3220 ST Microelectronics, STG3220 Datasheet - Page 5

• Manufacturer Part Number: STG3220
• Description: Low voltage high bandwidth dual SPDT switch
• Manufacturer: ST Microelectronics

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STG3220
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
Doc ID 15647 Rev 1
D1
D2
Dedicated port charging detection
1S1
1S2
INT
2S1
2S2
SEL
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