User's Guide

xE922-3GR Hardware User Guide
1VV0301272 Rev.0.8 2017-01-05
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 7 of 112
10.2. LVDS ..................................................... 62
10.3. Backlight control ............................................. 64
10.4. LED_CURSINK ............................................. 65
10.5. Touch panel ................................................. 66
11. Camera interface ............................................... 67
12. Peripheral interfaces ............................................. 71
12.1. I2C ...................................................... 71
12.2. USIF ..................................................... 72
12.3. SDMMC/SDIO .............................................. 74
12.4. ADC ..................................................... 77
13. General purpose I/O ............................................. 78
14. Debug / flash interfaces ........................................... 81
14.1. USB2.0 HS ................................................. 81
14.2. USIF2 .................................................... 81
14.3. JTAG ..................................................... 81
14.4. Test pads ................................................... 81
15. Audio ........................................................ 82
15.1. Analog .................................................... 82
15.1.1. Analog IN...................................................... 83
15.1.2. Analog OUT .................................................... 86
15.1.2.1. Earpiece ................................................. 87
15.1.2.2. Headset .................................................. 87
15.1.2.3. Loudspeaker .............................................. 88
15.2. Digital .................................................... 90
15.2.1. I2S .......................................................... 90
15.2.2. Digital microphone ................................................ 90
16. Antenna(s) .................................................... 91
16.1. GSM/WCDMA Antenna Requirements ............................. 91
16.1.1. GSM/WCDMA Antenna PCB line Guidelines............................. 92
16.1.2. GSM/WCDMA Antenna Installation Guidelines ........................... 92