MT7697 datasheet(78/81 Pages) ETC2

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MT7697

Internet-of-Things Wireless Connectivity

Page 78 of 81

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).

Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Pin alias

APGIO/

GPIO

Name

Dir

Default

dir

Default

PU/PD

Description

Pinx_pinmux_aon_sel

Pinx_pinmux_off_sel

GPIO_TOPAON[57]

I/O

General purpose input output

PWM[36]

Pulse-width-modulated output

[Reserved]

WIC[8]

External interrupt

ADC_IN0

Auxiliary ADC input

0x8102_300C[6]

GPIO58

AGPIO

PCM_SYNC

I/O

PCM interface for Bluetooth

0x8102_303C[11:8]=0

(0x8102_300C[7]=0)

0x8002_511C [11:8]

(0x8102_303C[11:8]=0,

0x8102_300C[7]=0)

S2A_SPI_OUT

MCU_AICE_TMSC

I/O

N9 debug

GPIO_TOPOFF[58]

I/O

General purpose input output

GPIO_TOPAON[58]

I/O

General purpose input output

PWM[37]

Pulse-width-modulated output

[Reserved]

WIC[9]

External interrupt

ADC_IN1

Auxiliary ADC input

0x8102_300C[7]

GPIO59

AGPIO

PCM_OUT

PCM interface for Bluetooth

0x8102_303C [15:12]

(0x8102_300C[8]=0)

0x8002_511C [15:12]

(0x8102_303C [15:12]=0,

0x8102_300C[8]=0)

UART_DSN_TXD_N9

UART DSN TX (N9)

SWD_DIO

I/O

CM4 debug port

GPIO_TOPOFF[59]

I/O

General purpose input output

GPIO_TOPAON[59]

I/O

General purpose input output

PWM[38]

Pulse-width-modulated output

WF_LED_B

I/O

LED output

WIC[10]

External interrupt

ADC_IN2

Auxiliary ADC input

0x8102_300C[8]

GPIO60

AGPIO

PCM_IN

PCM interface for Bluetooth

0x8102_303C [19:16]=0

(0x8102_300C[9]=0)

0x8002_511C [19:16]

(0x8102_303C [19:16]=0,

0x8102_300C[9]=0)

SWD_CLK

CM4 SWD debug port

GPIO_TOPOFF[60]

I/O

General purpose input output

GPIO_TOPAON[[60]

I/O

General purpose input output

PWM[39]

Pulse-width-modulated output

BT_LED_B

I/O

LED output

PULSE_CNT

Pulse counter input

WIC[11]

External interrupt

ADC_IN3

Auxiliary ADC input

0x8102_300C[9]

Note: * not used in MT7697

5.4

Bootstrap

The section describes the bootstrap function.

The chip modes are sensed from the device pin during power up. After chip reset, the pull

configuration are stored in a register and determine the device operation mode.

Table 5-4. Bootstrap Option– Flash Access Mode

Flash Access Mode

PIN53 (GPIO37)

Description

Normal mode

Pull-down(1)

Firmware jumps to flash.

Recovery mode

Pull-up

Firmware does not jump to flash and wait for UART

command.

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