N11
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
19
3.3
DTR and RING
Table 3-3
DTR and RING pins
Pin Signal
I/O
Function
Remarks
16
DTR
DI
Signal for controlling sleep mode Leave this pin floating if it is not used
18
RING
DO Ring output
Leave this pin floating if it is not used
3.3.2
DTR Pin
DTR is a pin to control sleep mode of N11 and used with AT commands. For details, see
Neoway_N11_AT_Command_Manual
. In sleep mode, the module can respond to the incoming calls,
SMS, and GPRS data.
Figure 3-13 shows the process of entering sleep mode.
Figure 3-13
Process of entering sleep mode
<n>
0: Forbid sleep mode
1: Allow to enter sleep mode
Enter sleep mode at low level
Exit from sleep mode at high level
2: Allow to enter sleep mode
Enter sleep mode at high level
Exits from sleep mode at low level
Initialization
completed
AT+ENPWRSAVE=<n>
Whether the module
is in idle state
Pull DTR low
Enter sleep mode and
disable all interfaces
End
Processing current
services
Y
Y
N
