用户手册目录OVERVIEW7SCOPE7ACRONYMS7PRODUCT DESCRIPTION7GENERAL INTRODUCTION9ABOUT THIS CHAPTER9FEATURE INTRODUCTION9APPLICATION DIAGRAM11CIRCUIT DIAGRAM11OUTLINE DIMENSIONS DIAGRAM122.6 TRANSFERRED BOARD AND DEBUG BOARD13APPLICATION INTERFACES14ABOUT THIS CHAPTER14DEFINITIONS OF LGA PINS14Pin Definitions14Pin Distribution18POWER INTERFACES19Overview of Power Pins19VSYS Primary Power19VIO Power20CONTROL SIGNAL INTERFACES20Overview of Control Signals20POWN_ON Signal20RESET_N Signal22WAKEUP_IN Signal23WAKEUP_OUT Signal24PSM_MON Signal24STATE Signal25DEBUG_UART INTERFACE25BLSP INTERFACES26Pin Description26UART Interfaces26SPI Bus Interface27I C Bus29GPIO INTERFACES30USIM INTERFACE31Pin Description31Electrical Characteristics and Design Points31Circuit Recommended for the USIM Card Interface32USB INTERFACE32Pin Description32Design Points and Recommended Circuit33AUDIO INTERFACES34Pin Description34Design Points34ADC/MPP INTERFACES35Pin Description35Design Points35JTAG INTERFACE36Pin Description36Design Points37ANTENNA INTERFACES37Pin Description37Antenna Design Points38RF CHARACTERISTICS39ABOUT THIS CHAPTER39Power Supply39Operating Current39REFERENCE DESIGN FOR RF LAYOUT39TEST STANDARD FOR CONDUCTED RF40REQUIREMENTS FOR ANTENNA DESIGN40Key Points for Antenna Design40Antenna Efficiency41VSWR42S1142Polarization42Radiation Pattern42Requirements for IoT Antenna Design43Precautions for Early Antenna Design43MECHANICAL CHARACTERISTICS44ABOUT THIS CHAPTER44ASSEMBLY PROCEDURE44Overview44Steel Mesh44Reflow Curve46REPAIR PROCEDURE47Repair Procedure47Module Dismantling47treatment in weld area47Module Installation47Visual Inspection47Feature Validation47EMC AND ESD PROTECTION48文件大小： 1.1 MB页数： 53Language: English打开用户手册
