Quectel L76 - L76 EVB Introduction

GNSS Module Series
L76&L76-L_Hardware_Design 6 / 59
Contents
Safety Information ....................................................................................................................................... 3
About the Document ................................................................................................................................... 4
Contents ....................................................................................................................................................... 6
Table Index ................................................................................................................................................... 8
Figure Index ................................................................................................................................................. 9
1 Product Description ........................................................................................................................... 10
1.1. Overview.................................................................................................................................. 10
1.2. Features .................................................................................................................................. 11
1.3. Performance ............................................................................................................................ 12
1.4. Block Diagram ......................................................................................................................... 13
1.5. GNSS Constellations .............................................................................................................. 14
1.5.1. GPS ................................................................................................................................ 14
1.5.2. BeiDou ............................................................................................................................ 14
1.5.3. GLONASS ...................................................................................................................... 14
1.5.4. Galileo ............................................................................................................................ 15
1.5.5. QZSS .............................................................................................................................. 15
1.6. Augmentation System ............................................................................................................. 15
1.6.1. SBAS .............................................................................................................................. 15
1.7. AGNSS .................................................................................................................................... 15
1.7.1. EASY™ .......................................................................................................................... 15
1.7.2. EPO™ ............................................................................................................................ 16
1.8. LOCUS .................................................................................................................................... 16
1.9. Multi-tone AIC .......................................................................................................................... 16
2 Pin Assignment .................................................................................................................................. 18
3 Power Management ........................................................................................................................... 21
3.1. Power Unit ............................................................................................................................... 21
3.2. Power Supply .......................................................................................................................... 22
3.2.1. VCC ................................................................................................................................ 22
3.2.2. V_BCKP ......................................................................................................................... 23
3.3. Power Mode ............................................................................................................................ 24
3.3.1. Continuous Mode ........................................................................................................... 24
3.3.2. Standby Mode ................................................................................................................ 24
3.3.3. Backup Mode ................................................................................................................. 25
3.3.4. Periodic Mode ................................................................................................................ 26
3.3.5. GLP Mode ...................................................................................................................... 27
3.3.6. AlwaysLocate™ Mode ................................................................................................... 28
3.4. Power-Up Sequence ............................................................................................................... 29
3.5. Power-Down Sequence .......................................................................................................... 30
4 Application Interfaces ....................................................................................................................... 31