User Manual Of GT3GM-M WCDMA Data Module Status： File Indicator： GT3GM-M WCDMA Hardware Guide [ ]Draft [ ]Release Version： [ ]Revise Author： Current 1.
Version History Version Author Date Remark V1.0 Cheng 2012-06-28 First version V1.
Contents Version History ................................................................................................................................................ 2 Contents ........................................................................................................................................................... 3 1. OVERVIEW ................................................................................................................................................. 4 1.
1. OVERVIEW GT3GM-M WCDMA data modem is a tiny, standards-based, wireless data modem that provides 3G/2G wireless data connectivity for portable and handheld computers, point-of-sale devices, other machine-to-machine and vertical applications. 1.1 Electrical features Input supply voltage: • VBAT: DC form Min 3.3 V to Max 4.2V • Typical DC power consumption: Standby current: 2 mA—5.6 mA Data server current: 300 mA—360 mA 1.
2. BLOCK DIAGRAM This diagram is going to address the whole completed module. • The module is a 3G data modem design to utilize the MTK MT6276 processor and MTK MT6162 RFIC to comprise with major data modem kernel, it’s also included UART communication interface. 3. MODULE SCOPE This document details the electrical requirements for customized form factor design to fit into the embedded application. Attribute Base band Description - MTK6276M – 32Bit, ARM1176JZS (typical 3.7V).
POWER KEY - To provide a control signal to turn on/off this module Indicator GPIO - RF signal indication (2G or 3G) -General input or output port USIM -Support 3V or 1.8V SIM The following sections describe in more detail and document design considerations for the high level attributes listed in the above table. 4. ELECTRICAL SPECIFICATION 4.1 SUPPLY VOLTAGE Symbol Parameter Min Type Max Unit VBAT PMIC, PA 3.3 3.6 4.2 V Voltage Ripple Input current 2%, 0~100kHz (Max.
Parameters Min Type Max 3.3 3.6 4.
transfer 1900MHZ PCL=0 651 647 643 mA (clasee1 2) 1RX,4TX Parameters Operation Data Min Type Max 3.3 3.6 4.
4.
5. INTERFACE 5.1 PIN ASSIGNMENT Pin NO. Pin name Type Function 1 VBAT POWER 2 VBAT POWER Module Supply voltage 3 VBAT POWER (range: DC from 3.3V to 4.2V) 4 VBAT POWER 5 VCharge POWER Charge input（DC:5.5V+/-0.5V） 6 GND GND GND 7 VDD28 POWER DC output voltage 2.
5.2 35 GPIO18 I/O 36 SIMVCC POWER SIM VCC 37 SIMCLK O SIM clock 38 SIMRST O SIM reset 39 SIMDATA I/O SIM data 40 GND GND GND 41 GND GND GND 42 GND GND GND 43 GND GND GND 44 GND GND GND General input/output port, can controllable pull-up or pull-down Supply Power (Pin 1,2,3,4) The supply power of Module should be DC from 3.3V to 4.2V,please refer to the following schematic to design the power of Module: 5.
5.5 PWRKEY(Pin9) The power key function is turn on/off the power source of module. The default setting is low for the module in operation mode 5.6 USB(Pin5,11,12) The USB interface is compliant with Version 2.0 of the USB standard for high speed operation. *Download mode: Short KCOL0 and KROW1 together for USB upgrade/download image. 5.7 Antenna Port(Pin19) In this module, we have one antenna port for signal transfer.
addition, the RF signal will be impacted by high data rate. We strongly suggest USIM signal trace to be short as possible and as far away as possible from the RF trace and power line. To prevent cross coupling, signal traces on your PCB must not be routed through the module backside. GT3GM-M Module Antenna Pad The antenna pad in your PCB should be 3~5mm wide and there must not be any other traces and ground under the pad.
the auxiliary ADC are listed in the following table: 5.10 Key pad There are 4 pin for the Keypad interface: PIN14, PIN15, PIN22, PIN23.
5.11 GPIOs The GT3GM-M module has 6 GPIOs (PIN25,PIN26,PIN27,PIN30,PIN34, PIN35,): Please refer to corresponding programming application for details as to all the GPIO ports. 5.12 PWM(Pin24) The GT3GM-M module has one PWM(pulse width modulation) output port, the default frequency is 200Hz,and the duty can be programmed. 5.13 USIM card interface The USIM pins provide the connections necessary to interface to a USIM socket located on the host device.
6 Mechanical Structure(mm) Page 16 of 18
7 Important announcement FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. IMPORTANT NOTE: This module is intended for OEM integrator. The OEM integrator is still responsible for the FCC compliance requirement of the end product, which integrates this module.
1) Type ATD112 on the terminal emulator attached to the DUT 2) Wait for data to begin to be sent to the terminal emulator by the DUT 3) Disconnect the terminal emulator using the onscreen button Page 18 of 18
