GSM Interface Module - iWave Systems Interface Module Datasheet iWave Systems Technologies Pvt Ltd...

GSM Interface Module Datasheet

iWave Systems Technologies Pvt Ltd

Product Overview

GSM Interface Module

The GSM/ GPRS interface board supports the communication between CPU board and external devices. The board can be used to send and receive SMS as well as to make and receive calls.

The GSM / GPRS board is based on HiLoV2 GSM module. The board has a SIM connector, which is used to connect the SIM with the module and give access to the network. In the board, 6-pin header is provided for the communication with the CPU board. The board has standard DB9 connector to interface with the PC.



Index

Technical Specification 3

Summary 3

Board Description 3

Interface Details 4

Power 4

Input & Output 5

Communication 5

SIM Specification 6

Physical Characteristics 7

Reference Schematics 8

Contact Details 12



Summary

Board Description

Technical Specification

GSM Module: HiLoV2

Operating Voltage: 3.3V

Input Voltage (recommended): 5-5.5V

Current Consumption : 2.2A maximum during burst mode of data transfer

Antenna: FXP14 Hexa-Band Cellular Antenna (850/900/1700/1800/1900/2100MHz)



Power

Interface Details

The board can operate on 5V DC line. Power jack (2.5mm) is provided to draw external 5V from AC to

DC Adapter. The LDO regulator present in the board steps down the voltage to 3.3V, which is the

required power supply for the GSM module.

Two 4 Pin connectors are provide on the board, to draw 5V and 3.3V directly from the main CPU board.

(These connectors can be used during testing or debugging). The power source can be selected based on

the requirement and conditions.

The Power Pins are as follows:

VCC_5V: The DC power supply used to power the switching regulator on the board.

VCC_3V3: A 3.3 volt supply generated by the on-board regulator. Maximum current drawn is

3A.This 3.3V can be also supplied from CPU board through the 4 pin power connector.

GND: Ground pins.

Table 2: Interface between GSM Interface Board and PC through UART Pin Type Signal Name Description(RS-232 compatible signals) 2 I/O UART_TX Tx Signal from GSM Module goes to Rx of PC 3 I/O UART_RX Tx Signal from PC goes to Rx of GSM Module 7 I/O UART_RTS RTS Signal from PC goes to RTS of GSMModule 8 I/O UART_CTS CTS Signal from GSM Module goes to CTS of PC

Table 1: Interface between CPU boardand GSM Interface Board Pin Type Signal Name Description 1 I/O CTS Clear to Send signal from Module 2 I/O RTS Request To Send signal to Module 3 Power GND Ground Signal 4 I/O TX Data Transmit signal from Module 5 I/O RX Data Receive signal to Module 6 Power 1.8V Power Supply



Communication

Input & Output

The GSM Interface Board has a number of communicating options with CPU boardand PC.

The Different Input and Output options are detailed below:

6 Pin Header: The 6 Pin header is used for interfacing with the CPU board. It carries Transmit and Receive Signals from GSM Module along with Handshaking signals.

Standard DB9: Standard DB9 is provided for PC communication. This can also be used for Software updating as well as for CPU Board Interface.

Reset Switch: Push button Reset option is provided for Reset of the board externally by the user.

LED: An LED is provided on board to indicate 3.3V is ON.

The GSM board has a number of facilities for communicating with a computer, CPU board, another GSM

board or other GSM phones. The HiLomodule provides UART serial communication, which is available

on digital pins 26 (RX) and 13(TX).These signals are converted to TTL level (5V) and can communicate

with PC through DB9 port. The board can communicate with CPU board through the 6 pin header.



SIM Specification

The board provides the provision to connect the SIM with the GSM module for external communication.

The signals for the management of SIM card are provided by the GSM module. Table 3 describes the pin

details of the SIM connector. To prevent SIM card’s damages, the power supply of the module has to be

turned off before any manipulation on SIM card.

The SIM card needs a power supply of 1.8V which is generated by the GSM module and directly

connected to the 1st and 5th pin of SIM connector, which provides the power supply input for SIM card.

Table 3:SIM card Interface Pin Details Pin Type Signal Name Description 1 Power VSIM 1.8V generated by the GSM module 2 Input SIM_RST SIM reset, Provided by the GSM module 3 Input SIM_CLK SIM clock provided by the GSM module 4 Power GND SIM Ground 5 Power VSIM 1.8V generated by the GSM module 6 I/O SIM_DATA SIM serial data line



Physical Characteristics

The length and width of the GSM Interface Board is 70mm x 75mm respectively. Four mounting holes allow the board to be attached to a surface or case.

*All dimensions are in mm



Reference Schematics

J1

PJ-002BH

321

VIN_5V

GND

TP2 5V1

D1

SMCJ6.0(C)A

12

C3

10uF

GND

VCC_5V

TVSDIODE

J3

External Power_5V

1234

1234

POWER IN

VCC_3V3

C6

0_1uF

EXTERNAL POWER

F1 5A

+C1

330uF

GND

VIN_5V

J2

External Power_3V3

1234

1234

C7

0_1uF

C4

0_1uF

GND

GND

TP3 GND1

GND



U1

LM1117-3.3

1

42

3

56

SD

OUTIN

GN

D

ERRGN

D

R3

10K

+C5

10uF

VCC_3V3

R2

10K

GND

TP1 3.3 V1

GND

3V3 REGULATOR

GND

R1

330E

VCC_3V3

GND

VCC_5V

LED

D2

LED+C2

10uF

GND

VCC_3V3

0.1uF

C32

VCC_3V310K

R29

GND

0.47uF

C31 TPS3808G09DBVR

U5

1

23

4

5 6

RESET

GNDMR

CT

SENSE1 VDDON/OFF

GND

0E

R28

PMICSupervisor

VCC_3V3



GSM_TX

DTR

RTS

R15 0 EDNPR12 0 E

GND

GSM_RTS

ON/OFF

GSM ModuleVGPIO

VGPIO

R8 0 EDNP Reset 2TP41

DSR

+ C18

47uF

VGPIO

RTS R11 0 EDNP

CTS

R7 0 E

R21

10K

R6 0 E

C1710uF

SIM_DATA 4

VCC_3V3

CTS

VSIM

SIM_RST 4

RX

J4

HiLo Module

1 2

3 4

567

89

10

11

12

1314

1516

1718

1920

2122

23

24

25

2627

2829

30

31323334

3536

37 38

39 40

41 42 43

VBA

T1

VBA

T2

GN

D1

GN

D2

UART0_TXUART0_RXRF_TX

GPIO3GPIO2

VG

PIO

UART_DSR

UART_DCD

UART_TXUART_CTS

SIM_RSTSIM_CLK

PWM0RESET

AUX_ADC0INTMIC_P

HSET_OUT_PHSET_OUT_N

PWM1

VSIM

SIM_DATA

UART_RXUART_RTS

UART_RIUART_DTR

VBA

CKU

P

POK_INGPIO1PCM_OUTPCM_IN

PCM_SYNCPCM_CLK

GN

D3

GN

D4

VBA

T3

VBA

T4

GN

D5

GN

D6

GN

D7

GSM_RX

TX

DTR

GND

R22

10K

DSR

R10 0 E

GSM_CTS

GND

SIM_CLK 4



UART_RX

RS232 Transceiver

C22

0_1uF

U3

MAX323215

16

138

1011

13

45 2

6

129

147

GN

DV

CC

R1INR2IN

T2INT1IN

C1+C1-

C2+C2- V+

V-

R1OUTR2OUT

T1OUTT2OUT

C20

0_1uF

UART_CTS

GND

VCC_3V3

GND

C23

0_1uF

C30

0_1uF

GND

GSM_RTS

C21

0_1uF

GSM_CTS

GSM_RX

UART_TX

UART_RTS

GSM_TX

CTS

UART_RTS

GND

UART_RXGND

R16 0 EDNP

RX

R13 0 EDNP

TX

R18 0 EDNP

R20 0 EDNP

UART_TXR14 0 E

UART_CTS

GND

R19 0 EUART_TX

R17 0 E

R9 0 E

UART_RX

J5

DB9_MALE

594837261

MH2

MH1

CONNECTORS

UART_RTS

RTS

UART_CTS

TP5

1V8

1

J6

6 PIN 2.54MM HEADER

12

3

45

6

RTSCTS

GND

TXRX

VCC



Contact Details

E-mail: [email protected]

Address: iWave Systems Technologies. Pvt. Ltd.

7/B, 29th Main,

BTM Layout, 2ndStage

Bangalore –560 076, India.

Phone: +91 80 26786243/45

GSM Interface Module - iWave Systems Interface Module Datasheet iWave Systems Technologies Pvt Ltd...

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