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
36 novatelwireless.com
Maximum Differential Capacitive Load 100 pF
Common Mode Minimum Resistive Load At Internal Speaker (+) or (-) 200 kW
Common Mode Maximum Capacitive Load At Internal Speaker (+) or (-) 50 pF
Amplifier Gain EARG = 1
EARG = 0 1
-11 DB
dB
Parameter Test Conditions Min Typ Max Units
Earphone output swing at EARP-
EARN
Distortion ≤ 2% and 120 Ω, VSP input level = +3 dBm0, amp
gain = -11 dB
0.98 VP-P
Distortion ≤ 2% and 33 Ω, VSP input level = -5.34 dBm0, amp
gain = -11 dB
0.38
Distortion ≤ 2% and 120 Ω, I2S input level = +3 dBm0, amp
gain = -11 dB
0.93
Distortion ≤ 2% and 120 Ω, VSP input level = +3 dBm0, amp
gain = 1 dB
3.1 3.92
Distortion ≤ 2% and 33 Ω, VSP input level = -5.34 dBm0, amp
gain = 1 dB
1.2 1.5
Distortion ≤ 2% and 120 Ω, I2S input level = +3 dBm0, amp
gain = 1 dB
2.96 3.7
Earphone amplifier gain EARG = 1 1 dB
EARG = 0 -11 dB
Earphone amplifier state in power
down
High
Z
Earphone amplifier power supply
rejection
1 kHz, 100 mVp-p 50 dB
An external audio amplifier should be used for loads of less than 16 W or if volume is
inadequate.
Headset Microphone Input (Pin 55)
Mic Input Parameter/Conditions Min Typ Max Units
The headset differential inputs HSMIC and AUXI can be
amplified by the differential handset microphone amp-
lifier. This amplifier has two different gains 4.9 dB or
25.6 dB and a bias generator HSMICBIAS provides an
external voltage of 2 V or 2.5 V to bias the microphone.
Headset Mic Input
Maximum Input Range Inputs 3 dBm0 (Max-
imum digital sample
amplitude with PGA
gain set to 0 dB),
AUXAMP gain = 18
dB, Single HSMIC
78 mVRMS
Nominal Ref. Level -10 dBm0