User Manual

GM862-GPS Software User Guide
1vv0300729 Rev. 5 - 05/07/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 56 of 120
3.4.2 Power saving modes description
The following table describes the module functionality in the various CFUN modes:
CFUN MODE
Event <FUN>=0 <FUN>=2 <FUN>=4 <FUN>=5
ON/OFF
power OFF (when
power ON starts in
CFUN=1)
power OFF(when
power ON starts in
CFUN=2)
If the module is
powered by
CHARGE pin the
first ON/OFF pulse
switch on the GSM
radio
(AT+CFUN=1)
power OFF(when
power ON starts in
CFUN=5)
RTS=1 then RTS=0 quit
1
no effect no effect
No effect (RTS is
only used for flow
control)
DTR=OFF or DTR=ON no effect no effect no effect
DTR=OFF enters
in power saving
DTR=ON exits
from power saving
URC quit
1
no effect no effect
temporary (only
during event)
Incoming voice/data call quit
1 not possible GSM
radio OFF
not possible GSM
radio OFF
temporary (only
during event)
Any AT command
not possible (UART
disabled)
no effect no effect
not possible
(UART disabled)
Incoming SMS(AT+CNMI is
set to 0,0
no effect
not possible GSM
radio OFF
not possible GSM
radio OFF
no effect
Incoming SMS(AT+CNMI is
set to 1,1
quit
1
not possible GSM
radio OFF
not possible GSM
radio OFF
temporary (only
while sending
SMS)
GPRS data transfer quit
1 not possible GSM
radio OFF
not possible GSM
radio OFF
temporary (only
during event)
RTC alarm quit
1
no effect no effect
temporary (only
during event)
AT+CFUN=1
not possible (UART
disabled)
quit
1
quit
1 not possible
(UART disabled)
1
Quit = module goes back to normal mode CFUN=1