User's Manual

Flairmesh Technologies Confidential -4-
1. Table of Contents
1 Pinout and Description ......................................................................................................................................... 7
1.1 Pin Assignments ................................................................................................................................. 7
1.2 Pinout Descriptions ............................................................................................................................ 7
2 Electrical Characteristics ....................................................................................................................................... 9
2.1 Absolute Maximum Rating ................................................................................................................ 9
2.2 Recommended Operating Conditions ........................................................................................... 10
2.3 Input/output Terminal Characteristics ............................................................................................ 10
2.3.1 Digital Terminals ....................................................................................................................... 10
2.3.2 LED Driver Pads ....................................................................................................................... 11
2.3.3 10-bit Auxiliary ADC ................................................................................................................. 11
2.3.4 Class-D DAC Audio Output ..................................................................................................... 11
2.3.5 Class-AB DAC Audio Output .................................................................................................. 12
2.3.6 High-quality (HQADC) Single-ended Audio Input ................................................................ 12
2.3.7 High-quality (HQADC) Differential Audio Input .................................................................... 13
2.3.8 Microphone Bias ....................................................................................................................... 13
2.3.9 VBAT voltage measurement accuracy .................................................................................. 14
2.4 Power consumptions ....................................................................................................................... 14
3 Physical Interfaces ............................................................................................................................................... 15
3.1 Power Supply .................................................................................................................................... 15
3.2 Reset .................................................................................................................................................. 15
3.3 Audio Interfaces ................................................................................................................................ 15
3.3.1 Digital Audio Interface .............................................................................................................. 15
3.4 General Purpose Analog IO ............................................................................................................ 15
3.5 LED Drivers ....................................................................................................................................... 16
3.6 Serial Interfaces ................................................................................................................................ 16
3.6.1 UART .......................................................................................................................................... 16
3.6.2 USB ............................................................................................................................................ 16
3.6.3 I2C .............................................................................................................................................. 16
3.6.4 SPI Interface ............................................................................................................................. 17
4 iNova Stack .......................................................................................................................................................... 17
5 Reference Design ................................................................................................................................................ 17
6 Mechanical Size and Recommended PCB Footprint ........................................................................................... 18
7 RF Layout Guidelines ........................................................................................................................................... 19
8 Reflow Profile ...................................................................................................................................................... 20
9 Package ............................................................................................................................................................... 20
2. Table of Tables