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
37 novatelwireless.com
Microphone Pre-Amplifier Gain 18 dB
Input resistance at HSMIC
HSMIC single input,
AUXAMP
gain = 18 dB
40.5 kΩ
Headset Microphone Bias Output (Pin 53)
Mic Bias Output Parameter/Conditions Min Typ Max Units
Bias Voltage on Mic(+) Set to 2.0 V 1.9 2.1 Vdc
Set to 2.5 V 2.4 2.6 Vdc
Mic Bias Current Capability 2.0 mA
Headset Speaker Output Left & Right (Pins 57, 59)
Pin Name Pin Number Signal Direction Description
HSOL 57 O Headset Out 32W Speaker Left
HSOR 59 O Headset Out 32W Speaker Right
HSOVMID 61 I Headset Out pseudo ground return
The left and right headset amplifiers provide the stereo signal on terminals HSOL and HSOR.
A pseudo ground is provided on terminal HSOVMID to eliminate external capacitors. The
mono audio signal can be provided on the Right or the Right and Left headset outputs.
HSOVMID is available to allow integrators to supply a bias or DC offset to increase the
dynamic range of the Headset.
Headset Spkr Output Parameter/Conditions Min Typ Max Units
Maximum Swing Distortion £ 2% and 32 W, VSP input level = +3
dBm0
1.6 1.96 VP-P
Distortion £ 2% and 32 W, I2S input level = +3
dBm0
1.48 1.85
Maximum Capacitive Load 100 pF
Minimum resistive load at HSOL and HSOR:
Zload
32 W
Amplifier Gain -5 dB
HSOL/R amplifier Power supply rejection
1 kHz, 100 mVpp