Uart1 - Fibocom G510 Hardware User Manual

3.7.1 UART1

The module UART1 is the main UART. It is a standard 8 wire serial bus interface. This UART is used for
all the communications with module - AT commands interface, GPRS data programming and software
upgrade.
The module is defined as a DCE device, and the user application is defined as the DTE device.
These definitions apply for the UART signals naming conventions, and the direction of data flow, as
described in the figure.
Pin No. Signal Name
19 UART1_TXD
18 UART1_RXD
21 UART1_CTS
20 UART1_RTS
15 UART1_DTR
16 UART1_DSR
22 UART1_RING
17 UART1_DCD
Recommended connection:
Application MCU
TXD
RXD
RI
DSR
RTS
DTR
CTS
G510 Hardware User Manual
Description
Module Transmitted Data
Module Received Data
Module Clear To Send
Request To Send
Data Terminal Ready
Module Data Set Ready
Module Ring indicator
Data Carrier Detect
Direction
Notes
G510 Transmitted Data
G510 Received Data
G510 Switch To Received Mode
G510 Notice DTE Requested To Send
DTE Was Ready
G510 Was Ready
G510 Notice DTE Remote Call
G510 Notice DTE that Data Carrier
Was Online
Module
Pin 18 UART1_RXD
Pin 19 UART1_TXD
Pin 22 UART1_RING
Pin 16 UART1_DSR
Pin 21 UART1_CTS
Pin 15 UART1_DTR
Pin 20 UART1_RTS
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