YUGE CLM920 User manual

Product Name
Development board
Produce Version
Total 13 pages
CLM920_DEMO_V1.4
CLM920
Development Board User Manual
V1.4
Shanghai Yuge Information Technology co., LTD
All rights reserved

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
- 1 -
Update records
version
Date
Author
Description
V1.0
2016/04/28
Yuge document group
Development board documentation
V1.1
2018/08/17
Yuge document group
Add function descriptions and organize
V1.4
2019/12/27
Yuge document group
Modify serial jumper and power jumper

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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Contents
Chapter 1. Development board introduction.......................................................................... - 3 -
Chapter 2. Function description............................................................................................. - 4 -
2.1 Floor plan................................................................................................................. - 4 -
2.2 Physical figure.......................................................................................................... - 5 -
2.3 USIM CARD............................................................................................................ - 7 -
2.4 Overview of the overall interface............................................................................. - 8 -
2.5 Voice......................................................................................................................... - 8 -
2.6 Power interface.......................................................................................................- 10 -
2.7 USB........................................................................................................................ - 10 -
2.9 Serial port............................................................................................................... - 11 -

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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Chapter 1. Development board introduction
Development Board Overview
The development (evaluation) board is a platform that provides customers with module
development and debugging (evaluation). Help customers quickly complete testing,
development, evaluation, verification of product features and functional demonstration of
modules. Customers can complete familiar module functions without making a PCB, and
DEMO develop related procedures to shorten the development cycle. The development board
is a standard MINIPCIE interface. Be sure to use it with the hardware manual and AT manual
of the specific module.

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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Chapter 2. Function description
2.1 Floor plan

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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2.2 Physical figure

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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Development board basic interface debugging overview:
1. Support one 5V DC input interface (using 5V power supply, you can set the power switch
to the side of the 5V power supply interface)
2. Support one USB 2.0 interface (Using USB to directly power the development board, you
can turn the switch to the USB side)
3. Support one 3.7V DC input interface (connect the pads VBAT and GND to the 3.7V
power supply)
4. One SIM card holder, U11 is a SIM card holder, the big card self-playing card holder
supports 3.0V or 1.8V USIM / SIM, and also supports the SIM card hot-swap function
(when inserting the SIM, the notch of the SIM card faces inward and the card chip faces
on)
5. Supports one 9-pin serial port (module default baud rate 115200)
6. Supports one 4-way headphone jack
7. Support one-way phone handle interface (for debugging analog voice)
8. One LED indicator (module status D10 is indicator, red)
9. J1 is a 52PIN MINIPCI interface, which can be connected to the CLM920 Mini PCIE
series module for testing and debugging.
10. Supports 2 * 10 pin headers and some test interfaces for module analog voice and
debugging.
11. J12 is a power jumper. It does not provide USB and 5V external power supply after
disconnection. It can only use 3.7V for power supply outside the wiring harness.
12. Pins 8, 9, and 10 of J10 correspond to the three pins of J1, 32, 20, and 19. These pins are
connected for the convenience of measuring and debugging the corresponding functions.
As shown below:

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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2.3 USIM CARD
U11 is a SIM card holder. The USIM card interface is compatible with 1.8V and 3.0V, and it
also supports SIM card hot swap function.
U11
Pin name
Features
1
USIM_VCC
SIM card power
2
USIM_GND
SIM card ground
3
USIM_RESET
SIM card reset
4
USIM_VPP
Dangling
5
USIM_CLK
SIM card clock
6
USIM_DATA
SIM card data
7
NC
Empty feet
8
NC
Empty feet
9
USIM_DETECT
Hot-plug detection pin

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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2.4 Overview of the overall interface
Location
number
Interface
Description
J1
MINI PCIE
MINIPCIE module interface
SW2
RESET
Module reset (active low)
J7
Earphone
4-pin headphone jack
J6
5V DC
5V DC power input
SW1
Power switch
Power switch
J901
MICRO USB
MICRO USB interface
J2
Handset
Phone handle interface
D10
LED
Module status indicator
DB9
UART Port
Nine-pin serial port socket (female)
U11
USIM CARD
SIM card socket
J10
2 * 10 pin header
Designed to be compatible with various
models of jumper interface and test interface
of some pins
2.5 Voice
There are two voice interfaces on the development board. The types of the modules are
different, and the types of audio supported are different. There are one analog voice and one
PCM voice module, one single PCM voice module, and one analog voice module. This kind
of voice needs to refer to the specifications of the corresponding module model. Two audio
interfaces are designed on the development board, of which J7 is the headphone interface and
J2 is the phone handle interface. After connecting the phone handle, you can directly make a
voice call. Because there is no codec circuit for PCM to analog voice on the development
board, the development board does not support the debugging and testing of PCM to analog
voice.

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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J2
Pin name
Features
1
MIC_N
Phone handle MIC negative
2
SPK_N
Phone handset negative
3
SPS_P
Phone handset positive
4
MIC_P
Phone handle MIC positive

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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2.6 Power interface
The development board can be powered by three power sources.
1. One channel is external 5V DC power supply
2. All the way is to power it through USB 5V power
3. All the way is to directly supply the module with 3.7V through the wiring harness outside
the power pad.
J6 is a 5V DC power interface, which supports 5V, 1A or more DC power to power the
development board. When SW1 is dialed to the J6 interface, choose to supply external 5V to
power the development board. When SW1 is dialed to the USB interface, select as USB
powers the development board.
As shown below:
2.7 USB
The CLM920 MINI PCIE series module provides a USB 2.0 interface, which conforms to the
USB 2.0 standard and has a high-speed transmission function (480Mbps). It is used for
command, data transfer, firmware upgrade and GNSS NMEA output.
The MINI PCIE development board provides a Micro USB socket J901 to connect to the host
device. The USB data cables USB_DP and USB_DM are directly connected to the MINI
PCIE module. USB-VBUS can be used as a power supply for the development board.
J901
Pin name
Features
1
USB_VBUS
This pin supports powering the development board
2
USB_DM
USB_D-

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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3
USB_DP
USB_D+
4
USB_ID
Dangling
5
GND
Ground
2.9 Serial port
DB9 is a nine-pin female serial port. The UART interface of the MINIPCIE development
board is used for data transmission and communication between the module and the host.
The following figure is a block diagram of the development board
Connect the 6th and 7th columns above the J10 row plug with jumper caps to achieve the
serial port TXD and RXD.
As shown by the arrow in the figure below:

CLM920 Development Board User Manual
Shanghai Yuge Information Technology co., LTD
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DB9
Pin name
Features
1
NC
Empty feet
2
RS232_RTD
Data reception
3
RS232_TXD
Data transmission
4
NC
Empty feet
5
RS232_GND
Ground
6
NC
Empty feet
7
RS232_RTS
Request to send
8
RS232_CTS
Clear send
9
NC
Empty feet