Enfora MLG0208PB001 用户手册
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
Modem Integration Guide
Figure 7 MCB2 Cable Assembly
6.6. Control Connector Signal Descriptions and Functions
6.6.1. Input
Power
The Enfora Enabler II-G A-GPS module uses a single voltage source of VCC=+3.3V to 4.5V.
(The exact values of the uplink currents are shown in Tables5.3.1 GSM Operating Power
and 5.3.2 GPRS Operating Power). The V
(The exact values of the uplink currents are shown in Tables5.3.1 GSM Operating Power
and 5.3.2 GPRS Operating Power). The V
CC
lines (pins 1 to 6) should be connected on the
application board.
The uplink burst will cause strong ripple on the voltage
lines and should be effectively filtered. It is recommended
that 1000 to 2000 μF of capacitance be placed as close to
the modem I/O connector as possible.
lines and should be effectively filtered. It is recommended
that 1000 to 2000 μF of capacitance be placed as close to
the modem I/O connector as possible.
It should be noted that the input voltage level should not
drop below the minimum voltage rating under any
circumstances, especially during the uplink burst period.
drop below the minimum voltage rating under any
circumstances, especially during the uplink burst period.
MLG0208PB001
26
Version1.01 – 10/3/2006