FN990
Family Hardware Design Guide
1VV0301752 Rev. 3 Page 15 of 92 2022-10-07
Not Sub
ect to NDA
Function Features
RTC Real time clock is supported.
Operating temperature
Range -40 degC to +85 degC
(conditions as defined in Section 2.8.1, Temperature Range)
Table 5: Main Features
2.4.1. Configurations Pins
Telit M.2 module indicates the main serial interface applicable on the combination of 4
configuration pins. FN990 Family is configured as an USB 3.1 Gen 2.
Pin Signal State Interface Type
21 CONFIG_0 GND
USB 3.1 Gen 2
Port Configuration 2
(Applicable to WWAN only)
69 CONFIG_1 GND
75 CONFIG_2 NC
1
CONFIG_3 NC
Table 6: Configurations Pins
Note: On the platform side, each of the CONFIG_0 to CONFIG_3 signals
must be equipped with a pull-up resistor. Based on the state of the
configuration pins on the Add-in Card, being tied to GND or left No
Connect (NC), the detected pins will create 4-bit logic state that
required decoding.
For more details, please refer to the PCI Express M.2 Specification
document.
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