Enfora Enabler IIG, Руководство по интеграции

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GSM0128IG001 27 Revision Draft – 9/22/08
PIN
#
FUNCTION Serial
Pin
I/O ENABLER IIG Description/Comments
54 SIM Reset O SIM_RST SIM Reset. No Connect if on-board SIM holder is used
55 Clear To Send 8 O CTS_Radio CTS Signal to Host.
56 ADC1 I ADC1 Analog-to-Digital Converter Input 1.
0 – 1.75 Vdc range. 1.709 mV resolution. 10 bit.
57 Data Terminal Ready 4 I DTR_RADIO DTR Signal from Host.
58 SIM Power O SIM_VCC SIM Power. No Connect if on-board SIM holder is used
59 Ground R GND Electrical power return for digital and analog grounds.
60 Ground R GND Electrical power return for digital and analog grounds.
Table 2 - Enabler IIG Pin Assignments
I
=Input into Enabler;
O
=Output from Enabler;
P
=Power Input to Enabler;
R
=Power Return from Enabler
I/O
=Input/Output into/from Enabler
6.6 Circuit Protection
Other than the basic low level ESD protection within the module’s integrated circuits (typically 2000 V), the
Enabler IIG does not have any protection against ESD events or other excursions that exceed the specified
operating parameters.
The only exception is that the remote SIM lines on the main I/O connector do have additional ESD protection
that should handle standard human-model contact ESD events.
Generally, ESD protection (typically TVS/Transorb devices) should be added to all signals that leave the
host board. This includes V
BAT
/V
CC
.
Series resistors (typically 47

) can also be added in series with data lines to limit the peak current during a
voltage excursion.
!
Caution – It is the integrator’s responsibility to protect
the Enabler IIG from electrical disturbances and
excursions that exceed the specified operating
parameters.
6.7 Antenna
A custom tri-band antenna can be attached via the on-board connector or soldered directly to the modem.
Each antenna direct-connect solder pad is 1.02 x 2.54 mm.
6.7.1 Antenna Solder Pads
Pads are provided to solder a cable or antenna directly to the Enabler IIG board.