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
28 novatelwireless.com
GPIO number Pin number Secondary Function
GPIO 12 12 MCSI_RX
GPIO 13 30
GPIO 14 26
GPIO 15 22
GPIO 16 24
GPIO 17 28
GPIO 18 20
GPIO 19 34
GPIO 20 32
Each general-purpose signal may be selected as an input or an output. The GPIOs can be used
independently as a user-specified function, or may be used to provide modem control and
status signals. Several examples of modem control signals are: power shutdown command,
register/deregister on network command, and transmitter disable. Several examples of
modem status signals are: registration status and ready-for-power-down status to be used
with power shutdown command signal.
I/O Lines Parameter/Conditions Min Typ Max Units
VIL Input Voltage – Low 0 0.60 Vdc
VIH Input Voltage – High 1.11 1.8 Vdc
VOL Output Voltage – Low 0.45 Vdc
VOH Output Voltage – High 1.26 Vdc
IOL / IOH Rated Output Current 4 mA
The below table shows the factory default modem GPIO configuration:
I/O
No
PU/PD
Enabled
PU/DN I/O set-
ting
PU/PD cap-
ability
PU Value
KOhm
PD Value
KOhm
Iout Notes
1 1 PU IN PU/PD 18 90 4
2 X X IN - - 8 10k Pulldown on
Modem
3 1 PD IN PD - 18 8
4 1 PU IN PU/PD 18 90 4
5 1 PU IN PU/PD 18 90 8
6 1 PU IN PU/PD 18 90 4
7 1 PU IN PU/PD 18 90 4
8 1 PU IN PU/PD 18 90 8