TUSB1210 datasheet(5/72 Pages) TI2

5 / 72 page

Table 5-1. Pin Functions (continued)

A/D

TYPE

LEVEL

DESCRIPTION

NAME

NO.

NXT

VDDIO

ULPI NXT output signal

REFCLK

3.3 V

VDD33 Reference clock input (square-wave only). Tie to GND when pin 26 (CLOCK)

is required to be Input mode. Connect to square-wave reference clock of amplitude in

the range of 3 V to 3.6 V when Pin 26 (CLOCK) is required to be Output mode. See

pin 14 (CFG) description for REFCLK input frequency settings.

RESETB

VDDIO

When low, all digital logic (except 32 kHz logic required for power up sequencing)

including registers are reset to their default values, and ULPI bus is tri-stated. When

high, normal USB operation.

STP

VDDIO

ULPI STP input signal

VBAT

power

VBAT

Input supply voltage or battery source

VBUS

power

VBUS

VBUS pin of the USB connector

VDD15

power

1.5 V internal LDO output. Connect to external filtering capacitor.

VDD18

28, 30

power

VDD18

External 1.8 V supply input. Connect to external filtering capacitor.

VDD33

power

VDD33

3.3 V internal LDO output. Connect to external filtering capacitor.

VDDIO

External 1.8 V supply input for digital I/Os. Connect to external filtering capacitor.

GND

Thermal

Pad

power

—

Reference Ground

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TUSB1210

SLLSE09J – NOVEMBER 2009 – REVISED JULY 2021

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