AC75 AT Command Set
2.9 AT+CFUN s
AC75_ATC_V01.002 Page 42 of 569 10/30/06
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2.9 AT+CFUN Set phone functionality
The AT+CFUN command serves to control the functionality level of the ME. It can be used to reset the ME, to
choose one of the SLEEP modes or to return to full functionality.
Intended for power saving, SLEEP mode reduces the functionality of the ME to a minimum and thus minimizes
the current consumption. Further information, particularly power supply ratings durin g the various operating
modes and the timing of hardware signals in SLEEP mode can be found in the "AC75 Hardware Interface
Description, Version 01.002".
SLEEP mode falls in two categories:
• NON-CYCLIC SLEEP mode <fun>=0
• and CYCLIC SLEEP modes, selectable as <fun>= 7 or 9.
NON-CYCLIC SLEEP mode permanently blocks the serial interface. The benefit of the CYCLIC SLEEP mode is
that the serial interface remains accessible and that, in intermittent wake-up periods, charac ters can be sent or
received without terminating the selected mode. This allows the ME to wake up for the duration of an event and,
afterwards, to resume power saving. Please refer to Section 2.9.1, Wake up the ME from SLEEP mode for a
summary of all SLEEP modes and the different ways of waking up the module.
For CYCLIC SLEEP mode both the ME and the application must be configured to use hardware flow control.
This is necessary since the CTS signal is set/reset every 0.9-2.7 seconds in order to indicate to the application
when the UART is active. The default setting of hardware flow control is AT\Q0 which must be altered to AT\Q3.
For use after restart you are advised to add it to the user profile saved with AT&W.
If both interfaces ASC0 and ASC1 are connected, hardware flow control must be set in either application. See
notes below for further detail.
SLEEP mode management if Java is started: The Java Virtual Machine remains active, but also enters the
SLEEP mode. AT commands can be sent from the Java application to the serial interface, no matter which
SLEEP mode was selected. This allows you to control the ME even if it is in NON-CYCLIC SLEEP mode.
The AT+CFUN test command returns the values of the supported parameters.
The AT+CFUN read command returns the current functionality value.
The AT+CFUN write command can be used to reset the ME, to choose one of the SLEEP modes or to return to
full functionality.
Syntax
Test Command
AT+CFUN=?
Response(s)
+CFUN: (list of supported <fun>s) , (list of supported <rst>s)
OK
Read Command
AT+CFUN?
Response(s)
+CFUN: <fun>
OK
Write Command
AT+CFUN=[<fun>[, <rst>]]
Response(s)
OK
ERROR
+CME ERROR
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4Last
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