TSU6111A

SCDS331

– FEBRUARY 2012

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GENERAL OPERATION

The TSU6111A will automatically detect accessories plugged into the phone via the mini/micro USB 5 pin

host. The TSU6111A has a network of switches that are automatically opened and closed based on the

accessory detection. See Table 1 for details of which switches are open during each mode of operation. The

TSU6111A also offers a manual switching mode that allows the host processor to decide which switches should

STANDBY MODE

Standby mode is the default mode upon power up and occurs when no accessory has been detected. During this

mode, the VBUS and ID lines are continually monitored through comparators to determine when an accessory is

inserted. Power consumption is minimal during standby mode.

POWER SUPERVISOR

communication.

Table 1. Function Table

TSU6111A

VBAT

VBUS

VDDIO

DETECTION

I2C

COMMENTS

Yes

No

No

Enabled

Not enabled

VBAT is supply

Yes

Yes

No

Enabled

Not enabled

VBAT is supply

Yes

No

Yes

Enabled

Enabled

VBAT is supply

Yes

Yes

Yes

Enabled

Enabled

VBAT is supply

No

Yes

No

Enabled

Not enabled

VBUS is supply

No

Yes

Yes

Not valid

No

No

Yes

Not valid

No

No

No

Power Down Reset

8

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© 2012, Texas Instruments Incorporated

Product Folder Link(s): TSU6111A