User's Manual
Table Of Contents
- 1 Introduction
- 2 Module Power
- 3 Physical Interfaces
- Module Mounting to Host Board (Reference)
- Connectors
- Connectors
- I/O Connector Pin Assignments
- Circuit Protection
- Antenna
- Control Connector Signal Functions
- Module Power (Pins 85, 87, 89, 91, 93, 95, 97, 99)
- Power Control (Pin 35) - (PWR_CTL)
- Level Translation Reference Power (Pin 77)
- USB (Pins 1, 3, 5, 7, 9)
- General Purpose Input/Output Interface
- RTC Sleep
- Serial Interfaces & Handshake (Pins 11, 13, 15, 17, 19, 21, 23, 25)
- Multi-Channel Serial Interface (MCSI) – (Pins 12, 14, 16, 18)
- VBackup Input (Pin83)
- Using VBackup
- Analog-to-Digital Input (Pin 74)
- Handset Microphone Input (Pins 65, 67)
- Handset Microphone Bias Output (Pin 63)
- Handset Speaker Output (Pins 71, 73)
- Headset Microphone Input (Pin 55)
- Headset Microphone Bias Output (Pin 53)
- Headset Speaker Output Left & Right (Pins 57, 59)
- Headset Output Common Mode (Pin 61)
- Headset Detect (Pin 47)
- Subscriber Identity Module (SIM) Carrier (Pins 76, 78, 80, 82, 84)
- 4 Hardware Design
- General Design Guidelines for Using Novatel Wireless M2M GSM Modules
- Enabling the Transmission Modes for the GSM/GPRS Services
- Voice Communication
- Circuit-Switched Data
- SMS: Short Message Services
- Provisioning The SIM
- GSM Services Supported by the Novatel Wireless M2M Enabler IIIG Module
- GPRS Services Supported by the Novatel Wireless M2M Enabler IIIG Module
- Selecting the GSM Modes of Operation
- 5 Setup and Initialization
- 6 Integration and Testing
31 novatelwireless.com
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Connect RxData (pin 15) and TxData (pin 21) to the COM port serial data lines.
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Tie RTS (pin 11) to CTS (pin 13), and DTR (pin 17) to DSR (pin 25) on the modem to
loopback the flow control signals
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The user must set AT+IFC=0,0 to disable flow control to communicate with the modem.
Note:
It is not recommended tying DTR (pin 17) and RTS (pin 11) to ground to “spoof”
flow control. This will cause the modem to draw more current.
It is not recommended to leave that DTR (pin 17) and RTS (pin 11) unconnected.
If DTR (B12) is not connected, the default setting of AT&D0 must be maintained.
Ring Indicate (Pin 23)
The Enabler IIIG module is capable of using the Ring line to discern the type of incoming call.
The indicator can be monitored via a hardware line available on the 100-pin I/O signal
connector.
The function of the Ring line depends on the type of the call received.
When the module is receiving a voice call, the Ring line goes low for 1 second and high for
another 2 seconds. Every 3 seconds the ring string is generated and sent over the Receive
(Data Out) (Rx) line. If there is a call in progress and call waiting is activated for a connected
handset or hands free device, the Ring pin switches to ground in order to generate acoustic
signals that indicate the waiting call.
When a Fax or data call is received, Ring goes low and will remain low. Every 3 seconds a ring
string is generated and sent over the Receive (Data Out) (Rx) line.
When an incoming SMS is received, Ring indicate goes low for 1 second, then returns to a high
state. See below logic diagram.