Enabler II-G Assiste GPS Integration Guide - Farnell
Enabler II-G Assiste GPS Integration Guide - Farnell
Enabler II-G Assiste GPS Integration Guide - Farnell
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Enfora <strong>Enabler</strong> <strong>II</strong>I-G<br />
Modem <strong>Integration</strong> <strong>Guide</strong><br />
Figure 17 - Power Control Signal (using external processor) shows a typical connection from an external<br />
processor to the Enfora <strong>Enabler</strong> <strong>II</strong>I-G module, using the external PWR_CTL signal. The Enfora <strong>Enabler</strong> <strong>II</strong>I-G<br />
can be powered on by using the PWR_CTL signal, and reset with the RESET signal. When using PWR_CTL,<br />
the I/O or serial lines can be at any voltage state desired. It is recommended that the I/O and serial lines be tristated<br />
or set low when the GSM0308 is shutdown for an extended period of time to prevent any leakage current<br />
from the processor to the modem.<br />
CPU<br />
Open drain, or Tri-State I/O<br />
Open drain, or Tri-State I/O<br />
VBAT<br />
GPIO<br />
SERIAL<br />
PWR_CTL<br />
RESET<br />
Modem<br />
Figure 17 - Power Control Signal (using external processor)<br />
Parameter Parameter/Conditions MIN TYP MAX UNIT<br />
VIL Input Voltage – Low or float 0.3 x VBAT Vdc<br />
VIH Input Voltage – High 0.7 x VBAT 1.95 Vdc<br />
IPU Internal Pull-Up Resistor -40 -31 -15 μA<br />
<strong>II</strong>L Current sink -2.0 mA<br />
ON Pulse Duration 10 50 mS<br />
OFF Pulse Duration Minimum is programmable 10-250 100 5000 mS<br />
(AT$OFFDLY)<br />
Boot time Time to boot from power on<br />
to command prompt<br />
1.1 Sec<br />
GSM0308PB001 40 Version 1.03– 7/17/2007
Change language