Telit Wireless Solutions FN990 Series - Page 24

FN990 Family Hardware Design Guide
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Page 24 of 83
2024-05-29
Pin
Signal
I/O
Function
Type
Comment
Config
21
CONFIG_0
-
Ground
69
CONFIG_1
-
Ground
75
CONFIG_2
-
Floating
1
CONFIG_3
-
Floating
Reserved for Future Use
59
RFU
60
RFU
Warning: Reserved pins must not be connected.
4.2 FN990 Family Signals That Must be Connected
The below table specifies the FN990 Family signals that must be connected for debugging
purposes, even if not used by the end application:
Table 14: Mandatory Signals
Pin
Signal
Notes
2, 4, 70, 72, 74
VPH_PWR
3, 5, 11, 27, 33, 39,
45, 51, 57, 71, 73
GND
6
FULL_CARD_POWER_OFF_N
7
USB_D+
If not used, connect to a test point or a USB connector
9
USB_D-
If not used, connect to a test point or a USB connector