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42
40
43
41
The recommended connection was seeing as below.
Application MCU
RXD
TXD
RI
DSR
RTS
DTR
CTS
DCD
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:
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
G610 GPRS Module Hardware User Manual
RTS_N
Request To Send
DTR_N
Data Terminal Ready
CTS_N
Clear To Send
DCD_N
Data Carrier Detect
The auto baud will be availability at the first time after power on. The UART will be
DTE Notice DCE
Requested To Send
DTE Was Ready
Module
DCE Switch To
Received Mode
Data Carrier Was
Pin 45
Pin 44
Pin 39
Pin 38
Pin 42
Pin 40
Pin 43
Pin 41
DTE→DCE
DTE→DCE
DCE→DTE
DCE→DTE
Online
G610 Module
RXD_N
TXD_N
RING_N
DSR_N
RTS_N
DTR_N
CTS_N
DCD_N
Page 24 of 47
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