User's Manual

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Flicker slowly(100ms On/3000ms Off)
Registered in 3G networks
Always On Connected to 3G networks, but no data transmitting
Off Closed or error(No SIM card or failed in registering
networks )
2.2.8.2 Reference circuit
The reference circuit for LED is shown in figure 2-13.
Figure 2-13 The reference circuit of LED control
1） The LED control pin connects to the cathode of LED. And the anode of LED connects to the +3.3v power in figure
2-12.
2）The value of electrical current must be below than 10mA. And the reference value is 5mA. So the current-limiting
resistor may be used. Just like the resistor R14 in figure 2-12
3）The reference circuit given is for the Green LED, and it is the same for the Red one.
2.2.9 Others*
U6300 also offers some other functional interfaces besides those which have been described above.
These signals are listed in table 2.15 below.
Table 2.15 The other signals offered by U6300
1） U6300 offers a power supply named VREG_MSMP, its value is +2.6V and the Max. value of electric current is
100mA.
The name of the correlative pins in
Mini PCIe Interface
SN. of the Mini PCIe
Interface
Description
KPD_PWR_N 17 Power on key, active low
EXT_RST_N 33 Reset signal for U6300
AUXADC1 22 External Analog signal input
VREG_MSMP 11
VREG_MSMP Output，2.6V
VCOIN 13 Standby battery input