Enfora Enabler EDG0208, Руководство интегратора

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Integration Guide
Draft
EDG0208IG001 Page 31 Rev. 1.03 –4/19/07
6.7.3 Radio Power/Reset (Pin 22)
A pulse on this Active-High input resets/restarts the module. This input has a “weak pull-down” resistor
internal to the module and can be left open-circuit or grounded if it is not going to be used. To initiate a
reset, provide a high-pulse of at least 50 ms duration.
Radio Power/Reset” should not be used as a routine start or wake-up function. “Module Reset” should only
be attempted when the modem does not respond to a Power Control Signal command.
PARAMETER PARAMETER / CONDITIONS MIN TYP MAX UNIT
V
IL
Input Voltage – Low or float 0 0.3 x
V
BAT
Vdc
V
IH
Input Voltage – High 0.7 x
V
BAT
V
BAT
Vdc
I
PD
Internal Pull-Down Resistor -40 -2 
A
Pulse Duration High Pulse Duration 50 mS
6.7.4 Using the Power Control Signal
The input is equivalent to the “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. 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 10000 mS. This input has a “weak pull-up” resistor internal to the module. If this pin is not
being controlled manually with the micro controller (or other device), the pin must be grounded.
PARAMETER PARAMETER / CONDITIONS MIN TYP MAX UNIT
V
IL
Input Voltage – Low or float
0 0.3 x
V
BAT
Vdc
V
IH
Input Voltage – High
0.7 x
V
BAT
V
BAT
Vdc
I
PU
Internal Pull-Up Resistor
-20 -2

A
ON Pulse Duration 100 mS
OFF Pulse Duration
Programmable
100 10000 mS