TUSB4041IPAP datasheet(7/44 Pages) TI1

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TUSB4041I

www.ti.com

SLLSEK3B – JULY 2015 – REVISED DECEMBER 2015

Pin Functions (continued)

I/O(1)

TYPE(1)

DESCRIPTION

NAME

NO.

TEST AND MISCELLANEOUS SIGNALS

Automatic charge mode enable/HS suspend status

The value of the pin is sampled at the deassertion 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. Note that CDP is not supported on port 1 when operating

in automatic mode.

AUTOENz/

I/O

HS_SUSPEND

1 = Automatic mode is disabled.

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

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.

Full power management enable/SMBus address bit 1

The value of the pin is sampled at the deassertion of reset to set the power switch

control follows:

0 = Power switching and overcurrent inputs supported

1 = Power switching and overcurrent inputs not supported

Full power management is the ability to control power to the downstream ports of the

TUSB4041I device using PWRCTL[4:1]/BATEN[4:1].

FULLPWRMGMTz/

I/O

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

SMBA1

slave address bit 1.

This pin can be left unconnected if full power management and SMBus are not

implemented.

After reset, this signal is driven low by the TUSB4041I. Because of this behavior, TI

recommends not to tie directly to supply, but instead pull up or pull down using an

external resistor.

Note: Power switching must be supported for battery charging applications.

Ganged operation enable/SMBus address bit 2/HS connection status upstream port

The value of the pin is sampled at the deassertion of reset to set the power switch

and overcurrent 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/

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

I/O

HS_UP

slave 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.

Power control polarity.

The value of the pin is sampled at the deassertion of reset to set the polarity of

PWRCTL[4:1].

PWRCTL_POL

I/O

0 = PWRCTL polarity is active low

1 = PWRCTL polarity is active high

23, 24,

26, 27,

35, 36,

38, 39,

43, 44,

RSVD

I/O

Reserved. For internal use only and leave unconnected on the PCB.

46, 47,

51, 52,

54, 55,

58, 59,

61, 62

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