TUSB7340 datasheet(7/122 Pages) TI2

7 / 122 page

Table 4-1. Clock and Reset Signals (continued)

TYPE

DESCRIPTION

NAME

TUSB7320

TUSB7340

PWRON4#

—

A48

O PD

USB DS Port 4 Power On Control for Downstream Power. The terminal is used

for control of the downstream power switch. If the PWRON_POLARITY bit is set

to 1, this pin is active high and the internal pull-down is disabled. This pin may be

at low impedance when power rails are removed.

OVERCUR4#

—

B45

I PU

USB DS Port 4 Overcurrent Detection. 0: overcurrent detected; 1: overcurrent

not detected

I2C SIGNALS

SCL

I/O

I2C Clock – If no I2C device is present, pull this line down to disable.

SDA

I/O

I2C Data – If no I2C device is present, pull this line down to disable.

TEST AND MISCELLANEOUS SIGNALS

JTAG_TCK

A32

I PD

JTAG test clock

JTAG_TDI

A35

I PU

JTAG test data in

JTAG_TDO

B31

O PD

JTAG test data out

JTAG_TMS

B30

I PU

JTAG test mode select

JTAG_RST#

B32

I PD

JTAG reset. Should be pulled low for normal operation.

GPIO0

A49

I/O PU General purpose I/O

GPIO1

B46

I/O PU

GPIO2

B47

I/O PU

GPIO3

B48

I/O PU

SMI

System management interrupt Note: This pin is active high and should not be

pulled up/down.

R1EXT

A24

High precision external resistor used for calibration. A resister value of 9.09 KΩ

±1% accuracy is connected between the terminals R1EXT and R1EXTRTN.

R1EXTRTN

B23

AUX_DET

A52

Auxiliary power detect. This pin indicates if the TUSB73X0 is enabled for wakeup

from D3cold. Note: If this feature is implemented, AUX_DET must be pulled to

VDD33 to prevent leakage.

B4, A5, B5,

B6, A7, B7,

A8, B8, B13,

A14, B25,

A26, B26,

A27, B27,

B28, A29,

B29, A30,

A43, B43,

B45, A46,

A48

A14, B8,

B13, A26,

B29, A43

I/O

Pins are not connected internally. Note: TUSB7320 pins B4 and B26 may be

connected to VDDA_3P3 to support a dual-layout option with the TUSB7340.

POWER SIGNALS

VDD33

A3, A34,

A39, A47,

A51

A3, A34,

A39, A47,

A51

PWR

3.3-V I/O power rail

VDDA_3P3

B11, A19,

A21, A25,

B22, A44

B4, B11,

A19, A21,

A25, B22,

B26, A44

PWR

3.3-V analog power rail

www.ti.com

TUSB7320, TUSB7340

SLLSE76Q – MARCH 2011 – REVISED MARCH 2024

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