Yuga CLM920 TD5 LTE Module Hardware Manual
Table Of Contents
- 1 Introduction
- 2 Product Overview
- 2.1 General Description
- 2.2 Key Features
- 2.3 Module Function
- 3 Application Interface
- 3.1 General Description
- 3.2 Module Interface
- 3.2.1 52-pin Goldfinger
- 3.2.2 Interface definition
- 3.3 Power Interface
- 3.3.1 Power Design
- 3.3.2 Reference Design of Power Supply
- 3.3.3 VDD_EXT 1V8 output
- 3.4 Reset mode
- 3.4.1 Power-on sequence
- 3.4.2 Power off
- 3.4.3 Reset control
- 3.5 USB interface
- 3.6 UART interface
- 3.7 USIM interface
- 3.7.1 USIM card reference circuit
- 3.7.2 UIM_DET Hot-Plug Reference Design
- 3.8 General purpose GPIO interface
- 3.9 Network Indication Interface
- 3.10 Analog voice interface
- 3.10.1 Analog Voice Reference Design
- 3.10.2 Analog Voice Reference Design
- 3.11 PCM audio interface
- 3.12 Antenna Interface
- 3.12.1 RF Connector Location
- 3.12.2 RF Connector
- 4 Overall Technical Indicators
- 4.1 Overview of this chapter
- 4.2 Operating frequency
- 4.3 Conducted RF Measurements radio frequency
- 4.3.1 Test environment
- 4.3.2 Test standards
- 4.4 Conducted receive sensitivity and transmit pow
- 4.5 Antenna requirements
- 4.6 Power consumption characteristics
- 5 Interface electrical characteristics
- 5.1 Operating Storage Temperature
- 5.2 Module IO electrical characteristics
- 5.3 Power supply characteristics
- 5.4 Electrostatic characteristics
- 6 Structural and mechanical properties
- 6.1 Appearance
- 6.2 Mini PCI Express connector
- 6.3 Module fixing method
CLM920_TD5 LTE Module Hardware Manual
22
域格信息技术有限公司
YuGe Information Technology Co.,Ltd
Module
GND
RTS
TXD
RXD
Host
GND
UART_RTS
UART_RXD
UART_TXD
UART_CTS
CTS
3.6 UART interface
CLM920_TD5 Mini PCIE module provides a set of UART interface, the level is 1.8V. This
interface can be used for AT communication and printing program log information.
The UART interface supports 4800, 9600, 19200, 38400, 57600, 115200, 230400,
460800 and 921600bps baud rate. The default is 115200bps.
UART interface is defined as follows:
Table 3- 8 UARTserial signal definitions
Pin
Signal name
I/O
Description
11
UART_RX
DI
UART receive data
13
UART_TX
DO
UART transmit data
23
UART_CTS
DI
user allows the module to
transmit
25
UART_RTS
DO
Module requests the user to
send
If need to use the serial port, please refer to the following serial port design.
Figure 3- 12 UART serial port design
The module’s UART port level is 1.8V. A level conversion chip is needed when connect
the port to the MCU whose level is 3.3V. The connection can refer to the following circuit:
Figure 3- 13 Level conversion circuit
UART_CTS
UART_RTS
1uF
VDD_3V3
RX_3V3
TX_3V3
CTS_3V3
RTS_3V3
1uF
VDD_EXT
VCCA
OE
UART_RX
A1
UART_TX
A4
B2
B4
B1
TXB0104
VCCB
A2
A3
B3
Module