Fibocom MG661-EU - Page 18

2 Pin Definition
15
Pin No.
Pin
Name
RESET
VALUE
I/O
Power
Domain
Description
2, 3, 97, 98
NC
- -
- -
- -
Suspended
Table 9. RF interface
Pin No.
Pin Name
I/O
Power
Domain
Description
35
ANT_MAIN
- -
- -
Main antenna
104
GRFC_6*
DO
1.8V
RF control signal, not recommended
105
GRFC_7*
DO
1.8V
RF control signal, not recommended
Table 10. LPG interface
Pin
No.
Pin Name
I/O
RESET
VALUE
Power
Domain
Description
16
NET_STATUS
DO
PD
1.8V
Network status indication
25
STATUS
DO
PU
1.8V
Operating status
indication
Table 11. USB interface
Pin
No.
Pin Name
I/O
Power
Domain
Description
61
USB_VBUS
PI
5.0V
USB insertion detection, typical value: 5 V
60
USB_DM
IO
3.3V
USB differential data signal (–), ensure
90Ω differential impedance
59
USB_DP
IO
3.3V
USB differential data signal (+), ensure
90Ω differential impedance