TUSB5052PZ datasheet(15/82 Pages) TI

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3−3

Table 3−1. Controller Pin Description (100-Pin TQFP) (Continued)

NAME

PIN NO.

I/O

NOTES

3/5V

(see Note 9)

DESCRIPTION

2-SIN

(2)(3)

UART2: Serial input data

2-DCD

UART2: Data carrier detect

2-DSR

UART2: Data set ready

2-CTS

UART2: Clear to send

2-RI

UART2: Ring indicator

GPIO[7:0]

75−72,

70−68,

I/O

(5)

General-purpose bidirectional port

GPO1

(5)

General-purpose output port 1 (low active)

GPO2

(5)

General-purpose output port 2 (low active)

GPO3

(5)

General-purpose output port 3 (low active)

GPI3

(5)

General-purpose input port 3 (low active)

GPI4

(5)

General-purpose input port 4

GPI5

(5)

General-purpose input port 5

GPI6

(5)

General-purpose input port 6 (low active)

GPI7

(5)

General-purpose input port 7

SDA

I/O

(1)(2)(3)

Master I2C controller: data signal

SCL

(8)

Master I2C controller: clock signal

CLKO

(1)

Programmable clock output (see GLOBCTL: global control register)

WAKEUP

(2)(3)

Remote wake-up request bit. When low, wakes up system

6-MHz crystal output

100

6-MHz crystal input or clock input

TRST

(3)

Test reset input (left open in normal operation)

RSTI

(2)

Controller master reset signal

RSTO

(7)

Reset output (see GLOBCTL: global control register)

TEST0

(3)

Test inputs (tied to VCC in normal operation)

TEST1

(3)

Test inputs (tied to VCC in normal operation)

TEST2

(3)

Test inputs (tied to VCC in normal operation)

GND

4, 10,

16, 33,

46, 62,

71, 86,

GND

Digital ground

VCC

7, 13,

36, 67,

PWR

3.3V

VCCS

38, 55,

PWR

NOTES:

1. 3-state CMOS output

2. Schmitt-trigger input

3. 100

µA active pullup

4. Unused downstream ports can be left open or tied to ground.

"14 mA I/O without internal pullup

6. 3-state CMOS output configured to emulate an open drain (without internal pullup). The MCU drives the pin high for two clock cycles

before entering the high-impedance state.

7. Push-pull output

8. Open drain

9. Y indicates 5-V operation. T indicates 5-V tolerance (output is 3.3 V, input can be 3.3 V or 5 V).

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