LE910Cx Hardware Design Guide
1VV0301298 Rev.37 Page 6 of 149 2023-03-16
Not Subject to NDA
GSM/WCDMA/TD-SCDMA/LTE Antenna – PCB Line Guidelines 64
GSM/WCDMA/LTE Antenna – Installation Guidelines 65
Antenna Diversity Requirements 65
GNSS Antenna Requirements 66
7.5.1.
Combined GNSS Antenna 67
7.5.2.
Linear and Patch GNSS Antenna 67
7.5.3.
Front End Design Considerations 67
7.5.4.
GNSS Antenna – PCB Line Guidelines 68
7.5.5.
GNSS Antenna – Installation Guidelines 68
8.
HARDWARE INTERFACES 69
USB Port 69
HSIC Interface (Optional) 71
SGMII Interface 71
8.3.1.
Ethernet Control interface 71
Serial Ports 72
8.4.1.
Modem Serial Port 1 Signals 72
8.4.2.
Modem Serial Port 2 74
8.4.3.
RS232 Level Translation 75
Peripheral Ports 76
8.5.1.
SPI – Serial Peripheral Interface 76
8.5.2.
I2C - Inter-integrated Circuit 77
8.5.3.
SD/MMC Card Interface 78
8.5.4.
WiFi SDIO Interface 79
Audio Interface 80
8.6.1.
Digital Audio 80
8.6.1.1.
Short Frame Timing Diagrams 82
8.6.1.2.
Long Frame Timing Diagrams 83
8.6.1.3.
I2S Digital Audio Diagram 85
General Purpose I/O 86
8.7.1.
Using a GPIO Pad as Input 88
8.7.2.
Using a GPIO Pad as an interrupt / Wakeup source 89
8.7.3.
Using a GPIO Pad as Output 89
9.
MISCELLANEOUS FUNCTIONS 90
Indication of Network Service Availability 90
To Next Page
Loading...
Need help?
General
