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Table 23: Working State of the Network Connection Status/Activity Indication
Pin Name
Status
Always High
NET_MODE
Always Low
Flicker slowly (200 ms High/1800 ms Low)
Flicker slowly (1800 ms High/200 ms Low)
NET_STATUS
Flicker quickly (125 ms High/125 ms Low)
Always High
Figure 26: Reference Circuit of the Network Status Indication
4.8.2. STATUS
The STATUS pin is an open drain output for module's operation status indication. It can be connected to a
GPIO of DTE with a pulled-up resistor, or as an LED indication circuit as below. When the module is
turned on normally, the STATUS will present the low state. Except for this, the STATUS will present
high-impedance state.
The following figure shows different circuit designs of STATUS, and you can choose either one according
to the application demands.
UC200A-GL_Hardware_Design
Module
NET_STATUS
UMTS/HSPA+ Module Series
Description
Registered on UMTS network
Others
Network searching
Idle
Data transfer is ongoing
Voice calling
VBAT
2.2 K
4.7 K
47 K
47 / 78
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