Telit Wireless Solutions FN990 Series User Manual

FN990
Family Hardware Design Guide
1VV0301752 Rev. 3 Page 52 of 92 2022-10-07
Not Sub
j
ect to NDA
Customers interested in using an embedded SIM mounted on the FN990 can contact Telit
Techical Support at:
 TS-EMEA@telit.com
 TS-AMERICAS@telit.com
 TS-APAC@telit.com
6.3.4. I2C – Inter-integrated Circuit
The FN990 Family supports an I2C interface: the the table below lists the I2C signals of
the modem.
Pin Signal I/O Function Type Comment
56 I2C_SDA I/O
I2C Data
Can be TGPIO_08
1.8V
Internal 2.2k
PU
58 I2C_SCL I/O
I2C Clock
Can be TGPIO_09
1.8V
Internal 2.2k
PU
Table 35: I2C Signal
6.3.5. Control Interface
Pin Signal I/O Function Type Comment
8 W_DISABLE_N I WLAN disable VPH_PWR
Internal 100k
PU
26 W_DISABLE2_N I GNSS disable VPH_PWR
Internal 100k
PU
10 LED_N O LED control Open Drain
23 WAKE_ON_WAN_N O Wake Host 1.8V Default PU
25 TGPIO_02 I/O
General Purpose I/O
Can be DPR
1.8V
Table 36: Control Interface Pins
6.3.5.1. WLAN/GNSS Disable
The W_DISABLE_N signal is provided to disable the WLAN/GNSS function:
 W_DISABLE_N
Low: Airplane mode
High or Floating: Normal operation
 W_DISABLE2_N
Low: GNSS Disable

Telit Wireless Solutions FN990 Series Specifications

General

Brand	Telit Wireless Solutions
Model	FN990 Series
Category	Computer Hardware
Language	English