Technical information

Chapter 2: Hardware Interface Description
December 15, 2009 G30 - Module Hardware Description 21
Data on the Serial interface
While G30 is temporarily awake in Idle mode, data may be transmitted on the serial interface. In
case data is being transmitted in any direction, G30 will not return to low power mode. This is
regardless of the original wake-up reason or source. G30 will remain awake while data is
transferred.
Only when the serial interface transfer is completed and the data has been processed, G30 will
return to low power mode automatically, according to the ATS24 settings (see Figure 2-9).
Figure 2-9: Serial Interface Data
Permanent termination of Low Power Mode
The G30 low power mode is enabled and disabled by the ATS24 command.
To permanently terminate the G30 low power mode, the ATS24 = 0 command must be used.
Setting ATS24 = 0 disables the currently active low power mode and switches G30 to Idle mode.
G30 will not return to low power mode until an ATS24 > 0 commands is set again.
This command can be sent only when the serial interface is active.
In case the serial interface is disabled, it must first be activated before sending this command. To
reactivate the serial interface, a temporary termination of the low power mode is required, as
described in “Temporary Termination of Low Power Mode” on page 20.
Following the temporary low power mode termination, the serial interface will activate and the
ATS24 = 0 command can be received by G30.