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Transition Guide
Ver. 1.00
3.0
Electrical Changes
3.1 PIN 22 Changes
GSM0107/0108
22
EDG0108
3.2 PIN 24 Changes
GSM0107
GSM0108
24
EDG0108
3.3 Using the SDK0107 Development Board with the EDG0108 Module
The existing Enabler II-G development board, SDK0107, can be used with the new EDG0108 module. Due
to the minor pin changes, certain procedures will need to be followed for proper operation.
EDG0100TG001
Radio Power Down/
I
Remote ON
Module Reset
I
Ground (0107)
PR
Power Control Signal
I
(0108)
Power Control Signal
I
High = Module Run
Float = Module Run
Low = Module OFF
High Pulse = Module Reset
Float = No reset;
Low = No reset;
Currently this input can only be used to
turn the module ON. Code to turn the
module OFF is not in the standard
software release.
When the modem is OFF, a high-to-low
pulse of > 100 mS will turn the modem
ON.
When the modem is ON, a high-to-low
pulse of > XXX mS will deregister from
the network and turn the modem OFF.
XXX is > 100 mS and can be configured
via AT Command for pulses up to 10,000
mS.
Page 9
On GSM0107/0108, the
PWRDN_RADIO input controlled an
internal power switch that physically
disconnected power to a majority of the
module.
On EDG0108, this pin (22) is now a
"module hardware reset input". This
input is "active high". It can be left
floating if the user does not want to
control "reset" or grounded. To reset, a
high-pulse of at least 50 mS will
reset/restart the module.
•
If GSM0107/0108 customer had
this pin pulled high with resistor,
don't stuff resistor and it will work
for all designs.
•
If GSM0107/0108 customer was
using this pin for power control,
they should use Pin-24 (below).
The Power Control Signal was added to
GSM0108.
The Power Control Signal is equivalent to
a "Phone ON Button".
This is a hardware-controlled pin on
power-up. It must be grounded
momentarily or continuously to start the
modem.
Subsequent signals to this pin (active
high-to-low transition) will cycle power to
the module.
Rev. 1.00 – 11/03/2005
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