Neoway N75 - Default Chapter; Table of Contents

N75
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
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Contents
1 About N75 .................................................................................................. 1
1.1 Product Overview ......................................................................................................................... 1
1.2 Block Diagram .............................................................................................................................. 2
1.3 Basic Features ............................................................................................................................. 3
2 Module Pins ............................................................................................... 5
2.1 Pad Layout ................................................................................................................................... 5
2.2 Pin Description ............................................................................................................................. 6
3 Application Interfaces .............................................................................. 14
3.1 Power Interface .......................................................................................................................... 14
3.1.1 VBAT .................................................................................................................................. 14
3.1.2 VDD_1P8 ........................................................................................................................... 18
3.2 Control Interfaces ....................................................................................................................... 19
3.2.1 PWRKEY_N ...................................................................................................................... 19
3.2.2 RESET_N .......................................................................................................................... 21
3.3 Peripheral Interfaces .................................................................................................................. 23
3.3.2 USB ................................................................................................................................... 23
3.3.3 USIM .................................................................................................................................. 25
3.3.4 UART ................................................................................................................................. 27
3.3.5 SDC ................................................................................................................................... 30
3.3.6 I2S/PCM ............................................................................................................................ 33
3.3.7 SPI ..................................................................................................................................... 39
3.3.8 I2C ..................................................................................................................................... 40
3.4 Network and Connection ............................................................................................................ 44
3.4.1 Ethernet ............................................................................................................................. 44
3.4.2 WLAN ................................................................................................................................ 47
3.4.3 Bluetooth ........................................................................................................................... 50
3.5 RF Interface ................................................................................................................................ 51
3.5.1 ANT_MAIN/ANT_DIV antenna interface ........................................................................... 52
3.5.2 ANT_GNSS Interface ........................................................................................................ 54
3.5.3 Antenna Assembling .......................................................................................................... 57
3.6 GPIO .......................................................................................................................................... 58
3.7 MUX Interfaces .......................................................................................................................... 59
3.8 Other Interfaces ......................................................................................................................... 62
3.8.1 GNSS_LNA_EN ................................................................................................................ 62
3.8.2 ADC ................................................................................................................................... 62
3.8.3 RING .................................................................................................................................. 62
3.8.4 DTR ................................................................................................................................... 63
3.8.5 USB_BOOT ....................................................................................................................... 65
4 Electric Feature and Reliability ................................................................ 66
4.1 Electric Features ........................................................................................................................ 66