Telit Wireless Solutions FN990 Series Hardware Design Guide

FN990 Family Hardware Design Guide
1VV0301752 8
Page 46 of 83
2024-05-29
Note: FN990 Family modems contain an internal pull-up resistor on SIMIO. It is not
necessary to install an external pull-up resistor.
eSIM Interface
FN990 modems include pads for an optional embedded SIM (WLCSP package).
Customers interested in using an embedded SIM mounted on the FN990 can contact Telit
Technical Support at:
•
TS-EMEA@telit.com
•
TS-AMERICAS@telit.com
•
TS-APAC@telit.com
I2C – Inter-integrated Circuit
The FN990 Family supports an I2C interface: the table below lists the I2C signals of the
modem.
Table 36: I2C Signal
Pin
Signal
I/O
Function
Type
Comment
56
I2C_SDA
I/O
I2C Data
Can be TGPIO_09
1.8V
Internal 2.2k
PU
58
I2C_SCL
I/O
I2C Clock
Can be TGPIO_10
1.8V
Internal 2.2k
PU
Control Interface
Table 37: Control Interface Pins
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
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
High or Floating: Normal operation

Telit Wireless Solutions FN990 Series Specifications

General

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