TC3567CFSG-002

2018-04-06

10

2.3. GPIO function list

GPIO pins can be assigned to UART I/Fs, serial memory I/Fs and etc. by TC3567C firmware or command from external Hosts.

Table 2-2 shows available functions, during reset status and software controlling after reset release for each GPIO pin, and Table

2-3 shows examples of GPIO function settings. About what function name shown in Table 2-2 is assigned to a plurality of pins in the

same, please note that it cannot be assigned to select a plurality of pins at the same time.

Table 2-2 Available functions for GPIO

Pin

During reset

status

After reset release

Function 1

Function 2

Function 3

Function 4

Analog

input

Pin state at

unused

GPIO0

Disable/ Hi-Z

Disable/

Disconnection:

Pull-up, Pull-down

WakeUp0

Input

—

—

—

—

Open

GPIO1

Disable/ Pull-up

Input/ Pull-up

(Note2)

PWM0

Output

—

—

—

—

Open

(Note1)

GPIO2

Disable/ Pull-up

Input/ Pull-up

(Note2)

PWM1

Output

—

—

—

—

Open

(Note1)

GPIO3

Disable/ Hi-Z

Disable/

Disconnection:

Pull-up, Pull-down

PWM2

Output

SPI-DOUT

Output

—

—

ADC1

Input

Open

GPIO4

Disable/ Hi-Z

Disable/

Disconnection:

Pull-up, Pull-down

PWM3

Output

SPI-DIN

Input

—

—

ADC2

Input

Open

GPIO5

Disable/ Pull-up

Input/ Pull-up

(Note3)

UART1-TX

Output

SPI-DOUT

Output

—

—

—

Open

GPIO6

Disable/ Pull-up

Input/ Pull-up

(Note3)

UART1-RX

Input

SPI-DIN

Input

—

—

—

Open

GPIO7

Disable/ Pull-up

Input/ Pull-up

I2C-SCL

Output

—

SPI-SCS

Output

UART1-RTSX

Output

—

Open

GPIO8

Disable/ Pull-up

Input/ Pull-up

I2C-SDA

I/O

—

SPI-SCLK

Output

UART1-CTSX

Input

—

Open

GPIO9

Disable/ Hi-Z

Disable/

Disconnection:

Pull-up, Pull-down

—

—

—

—

ADC3

Input

Open

GPIO10

Disable/ Hi-Z

Disable/

Disconnection:

Pull-up, Pull-down

—

—

—

—

ADC4

Input

Open

GPIO11

Disable/ Pull-up

Input/ Pull-up

I2C-SCL

Output

SPI-DOUT

Output

—

—

—

Open

GPIO12

Disable/ Pull-up

Input/ Pull-up

I2C-SDA

I/O

SPI-DIN

Input

—

—

—

Open

GPIO13

Disable/ Pull-up

Input/ Pull-up

UART1-RTSX

Output

—

—

—

—

Open

GPIO14

Disable/ Hi-Z

Disable/

Disconnection:

Pull-up, Pull-down

UART1-CTSX

Input

—

—

—

ADC5

Input

Open

GPIO15

Disable/ Hi-Z

Disable/

Disconnection:

Pull-up, Pull-down

WakeUp1

Input

—

—

—

—

Open

GPIO25

Disable/ Pull-up

Input/ Pull-up

—

—

—

—

—

Open

Note1: Handle with care because of using operation mode switching.

Note2: Except in User-App mode, it becomes Pull-down.

Note3: In the HCI mode, the pull-up / pull-down resistor is disconnected.

Note: About the GPIO pin state, the state in case of using in the user application mode is shown. When it is turned on in HCI mode, a

part of the state becomes different. Therefore, for detail states of each pin, refer to the software application note.