Use Instructions
Table Of Contents
- 1 About this document
- 2 Product Overview
- 3 Interface Description
- 3.1 PIN Definition
- 3.2 Operating condition
- 3.3 Digital I/O characteristics
- 3.4 Power Interface
- 3.5 UIM interface
- 3.6 PCM interface(TBD)
- 3.7 USB2.0 interface
- 3.8 UART Interface
- 3.9 Power on/off and reset interface
- 3.10 Interactive interface
- 3.11 Net Light interface
- 3.12 System boot configuration and download
- 3.13 Analog and Digital conversion (ADC) interface
- 3.14 I2C interface
- 3.15 SPI interface
- 3.16 Antenna interface
- 4 Product characteristics
- 5 Design guideline
- 6 Manufacturers
- 7 Package Storage information
- 8 Safety Information
L710HG Hardware Design
28
56 UART_DCD
DO
UART Carrier detects.
3.8.2 UART interface application
L710HG UART is COMS 1.8V level, Complete serial port with RS-232 functionality conforming to
the ITU-T V.24 Recommendation, with CMOS compatible signal levels (0 V for low data bit or ON
state and 1.8 V for high data bit or OFF state), if the AP voltage level is not the 1.8V should add a
voltage transfer module in your application. Below is RS-232 voltage transfer module application
diagram.
TXD1
RXD1
RTS1
CTS
1
DTR1
DCD1
RING1
TXD
RXD
RTS
CTS
DTR
DCD
RING
Serial Port
Serial Port
L
610
(
DCE)
Client(DET)
GND GND
Figure 3-11 UART 4 Line connection mode
TXD1
RXD1
RTS1
CTS1
DTR1
DCD1
RING1
TXD
RXD
RTS
CTS
DTR
DCD
RING
Serial Port
Serial Port
L610(DCE)
Client (DTE)
GND GND
Figure 3-12 UART 2 Line connection mode