TUSB8043AI datasheet(6/62 Pages) TI2

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TUSB8043A

SLLSF94 – JUNE 2019

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Pin Functions (continued)

I/O

DESCRIPTION

NAME

NO.

OVERCUR2z

I, PU

USB Port 2 Over-Current Detection. This pin is typically connected to the over current output

of the downstream port power switch for Port 2.

0 = An over current event has occurred

1 = An over current event has not occurred

When GANGED power management is enabled, this pin or one of the other OVERCURz pins

must be connected to the over current output of the power switch or circuit which detects the

over current conditions. For the case when another OVERCURz pin is used, this pin can be

left unconnected.

USB_SSTXP_DN3

USB SuperSpeed transmitter differential pair (positive)

USB_SSTXM_DN3

USB SuperSpeed transmitter differential pair (negative)

USB_SSRXP_DN3

USB SuperSpeed receiver differential pair (positive)

USB_SSRXM_DN3

USB SuperSpeed receiver differential pair (negative)

USB_DP_DN3

I/O

USB High-speed differential transceiver (positive)

USB_DM_DN3

I/O

USB High-speed differential transceiver (negative)

PWRCTL3/BATEN3

I/O, PD

USB Port 3 Power On Control for Downstream Power/Battery Charging Enable. The pin is

used for control of the downstream power switch for Port 3. This pin be left unconnected if

power management is not implemented.

In addition, the value of the pin is sampled at the de-assertion of reset to determine the value

of the battery charging support for Port 3 as indicated in the Battery Charging Support

0 = Battery charging not supported

1 = Battery charging supported

OVERCUR3z

I, PU

USB Port 3 Over-Current Detection. This pin is typically connected to the over current output

of the downstream port power switch for Port 3.

0 = An over current event has occurred

1 = An over current event has not occurred

When GANGED power management is enabled, this pin or one of the other OVERCURz pins

must be connected to the over current output of the power switch or circuit which detects the

over current conditions. For the case when another OVERCURz pin is used, this pin can be

left unconnected.

USB_SSTXP_DN4

USB SuperSpeed transmitter differential pair (positive)

USB_SSTXM_DN4

USB SuperSpeed transmitter differential pair (negative)

USB_SSRXP_DN4

USB SuperSpeed receiver differential pair (positive)

USB_SSRXM_DN4

USB SuperSpeed receiver differential pair (negative)

USB_DP_DN4

I/O

USB High-speed differential transceiver (positive)

USB_DM_DN4

I/O

USB High-speed differential transceiver (negative)

PWRCTL4/BATEN4

I/O, PD

USB Port 4 Power On Control for Downstream Power/Battery Charging Enable. The pin is

used for control of the downstream power switch for Port 4. This pin be left unconnected if

power management is not implemented.

In addition, the value of the pin is sampled at the de-assertion of reset to determine the value

of the battery charging support for Port 4 as indicated in the Battery Charging Support

0 = Battery charging not supported

1 = Battery charging supported

OVERCUR4z

I, PU

USB Port 4 Over-Current Detection. This pin is typically connected to the over current output

of the downstream port power switch for Port 4.

0 = An over current event has occurred

1 = An over current event has not occurred

When GANGED power management is enabled, this pin or one of the other OVERCURz pins

must be connected to the over current output of the power switch or circuit which detects the

over current conditions. For the case when another OVERCURz pin is used, this pin can be

left unconnected.

I2C/SMBUS I2C Signals

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