User Manual
Table Of Contents
- Confidential Material
- Copyright
- Revision History
- Trademarks Notice
- Contents
- Preface
- Introduction
- Hardware Interface Description
- Electrical and Environmental Specifications Absolute Maximum Ratings
- Mechanical Design
- Antenna Interface
G610 GPRS Module Hardware User Manual Page 24 of 47
42 RTS_N Request To Send
DTE Notice DCE
Requested To Send
DTE→DCE
40 DTR_N Data Terminal Ready DTE Was Ready DTE→DCE
43 CTS_N
Module
Clear To Send
DCE Switch To
Received Mode
DCE→DTE
41 DCD_N Data Carrier Detect
Data Carrier Was
Online
DCE→DTE
The recommended connection was seeing as below.
Application MCU G610 Module
RXD Pin 45 RXD_N
TXD Pin 44 TXD_N
RI Pin 39 RING_N
DSR Pin 38 DSR_N
RTS Pin 42 RTS_N
DTR Pin 40 DTR_N
CTS Pin 43 CTS_N
DCD Pin 41 DCD_N
The G610 UART supports baud rates 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200,
230400 bps. Auto baud rate detection is supported for baud rates up to 230400 bps.
All flow control handshakes are supported: hardware or none.
The UART default port configuration is 8 data bits, 1 stop bit and no parity, with None
flow control and auto baud rate detect enabled.
Important: The auto baud will be availability at the first time after power on. The UART will be
no answer probably if switch to another baud rate at working.
3.7.1 Ring indicate
The RING_N signal serves to indicate incoming calls and other types of URCs (Unsolicited
Result Code). It can also be used to send pulses to the host application, for example to wake up the