Telit Wireless Solutions FN990 Series - FN990 Family Signals that Must be Connected

FN990
Family Hardware Design Guide
1VV0301752 Rev. 3 Page 25 of 92 2022-10-07
Not Sub
j
ect to NDA
Pin Signal I/O Function Type Comment
75 CONFIG_2 - Floating
1 CONFIG_3 - Floating
Reserved for Future Use
59 RFU
60 RFU
Table 13: FN990 Family Pin-out Information
Warning: Reserved pins must not be connected.
FN990 Family Signals That Must be Connected
Below table specifies the FN990 Family signals that must be connected for debugging
purposes, even if not used by the end application:
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 an USB
connector
9
USB_D-
If not used, connect to a test point or an USB
connector
Table 14: Mandatory Signals