Wakeup-In Line; Wake Up Outline - Motorola AT Commands G24-L Developer's Manual

Figure 3-9: Wakeup-In Line
Two modes exist:
•
Idle Mode: The terminal has no data to send. If the terminal enables sleep mode (using
ats24), the G24-L activates its Sleep mode module.
•
Wakeup Mode: The G24-L does not enter sleep mode, and the terminal can send data.
Once the terminal changes the line edge to Wakeup mode, it needs a 10 ms delay before sending
any data to the G24-L (using the RS232 protocol).
G24-L Wakes the Terminal
•
The G24-L follows these steps in order to wake up the terminal:
•
The G24-L indicates to the terminal that it has data and that it must wake up. The G24-L uses
the Wakeup-Out Line (pin #26) (brings it to active low).
•
While the Wakeup Out line is low, the terminal should not enter Sleep mode.
•
The terminal should set a value of the delay (in ms) needed for waking it (using the ATS102
command) before receiving data (default value is 30 ms).
When the data transmission is complete, the G24-L gets the output wakeup line to high.
Figure 3-10: Wake up Outline
April 15, 2008
TXD
Line (pin #21)
WAKEUP-IN
Line (pin #16)
Idle
Wakeup
10 ms
G24-L AT Commands Reference Manual
Chapter 3: AT Commands Reference
Data transmit
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