FN990
Family Hardware Design Guide
1VV0301752 Rev. 3 Page 5 of 92 2022-10-07
Not Sub
ect to NDA
6.3.1.1.
Host Interface Switch Function 44
6.3.1.2.
PCIe Interface 45
6.3.1.3.
USB 3.1 Interface 48
6.3.2.
SIM Interface 50
6.3.2.1.
SIM Schematic Example 51
6.3.3.
eSIM Interface 51
6.3.4.
I2C – Inter-integrated Circuit 52
6.3.5.
Control Interface 52
6.3.5.1.
WLAN/GNSS Disable 52
6.3.5.2.
LED 53
6.3.5.3.
Wake Host 54
6.3.5.4.
DPR 54
General Purpose I/O 55
6.4.1.
Using a GPIO as INPUT 55
6.4.2.
Using a GPIO as OUTPUT 56
7.
RF SECTION 57
Antenna Interface 57
7.1.1.
Antenna Configuration 57
Antenna Connector 61
Antenna Requirements 62
7.3.1.
Antenna Cable 62
7.3.2.
Antenna Installation Guidelines 63
GNSS Receiver 63
7.4.1.
GNSS RF Front End Design 64
GNSS Characteristics 65
8.
MECHANICAL DESIGN 66
General 66
Finishing & Dimensions 66
Drawing 66
Solder Resist Opening Area and Keepout Area 66
9.
APPLICATION GUIDE 68
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