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
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Jack plug detection is functional if a plug event occurs before the power up of the module or
if the plug event occurs after the power up of the module: analog detection part is always
active if the battery is connected. Detection interrupts will be generated once the VRIO
regulator is power up during the module power up sequence.
A level change on HSDET pin is sensed by a Schmitt trigger to provide a jack detection signal
to the audio digital control. The audio digital control receives the detection signal and
proceeds to a digital debouncing (time: 8 ms = 256 * 32 kHz clock periods) before sensing that
a plug event happened on the jack connector.
Headset Detect Parameter/Conditions MIN TYP MAX UNIT
Low level input voltage VIL related to VBAT
0.3 * VBAT V
High level input voltage VIH related to VBAT
0.7 * VBAT V
Current with pull-up -40 -31 -15 μA
Subscriber Identity Module (SIM) Carrier (Pins 76,
78, 80, 82, 84)
The SIM, an integral part of any GSM terminal device, is a “smart card” that is programmed
with subscriber information:
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The user information consists of an International Mobile Subscriber Identity (IMSI)
number, which is registered with the GSM provider, and an encryption Ki (pronounced
"key"). This information consists of a microprocessor and memory installed on a plastic
card.
Note: The SIM is not provided with the Novatel Wireless M2M Enabler IIIG
module. The SIM must be obtained from the GSM service provider and must be
provisioned by the operator for data and/or voice. Always take care to protect
the SIM: the GSM terminal will not operate without the SIM installed.
The SIM provides the IMSI for authentication. To gain access to the GSM network, the network
must recognize the IMSI number, and the terminal must be able to properly decrypt the data
sent by the network. The SIM also serves as a buffer for SMS messages, storing the message
for transmission until a radio link is available and buffering received messages until retrieved.