TUSB8041 datasheet(8/48 Pages) TI1

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TUSB8041

SLLSEE4D – JUNE 2014 – REVISED JANUARY 2016

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Pin Functions (continued)

I/O

DESCRIPTION

NAME

NO.

Ganged operation enable/SMBus Address bit 2/HS Connection Status Upstream Port.

The value of the pin is sampled at the de-assertion of reset to set the power switch and over

current detection mode as follows:

0 = Individual power control supported when power switching is enabled

1 = Power control gangs supported when power switching is enabled

GANGED/SMBA2/

I/O, PD

When SMBus mode is enabled using SMBUSz, this pin sets the value of the SMBus slave

HS_UP

address bit 2.

After reset, this signal indicates the High-speed USB connection status of the upstream port if

enabled through the Additional Feature Configuration register. When enabled a value of 1

indicates the upstream port is connected to a High-speed USB capable port.

Note: Individual power control must be enabled for battery charging applications.

Automatic Charge Mode Enable/HS Suspend Status.

The value of the pin is sampled at the de-assertion of reset to determine if automatic mode is

enabled as follows:

0 = Automatic Mode is enabled on ports that are enabled for battery charging when the

hub is unconnected. Please note that CDP is not supported on Port 1 when operating in

AUTOENz/

Automatic mode.

I/O, PU

HS_SUSPEND

1 = Automatic Mode is disabled

This value is also used to set the autoEnz bit in the Battery Charging Support Register.

After reset, this signal indicates the High-speed USB Suspend status of the upstream port if

enabled through the Additional Feature Configuration register. When enabled a value of 1

indicates the connection is suspended.

TEST

I, PD

This pin is reserved for factory test.

Power and Ground Signals

5, 8,

13, 21,

VDD

PWR

1.1-V power rail

28, 31,

51, 57

16, 34,

VDD33

PWR

3.3-V power rail

52, 63

THERM

VSS

PWR

Ground. Thermal pad must be connected to ground.

AL PAD

—

No connect, leave floating

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