SimCom SIM7500 Series User manual

SIM7500_EVB Kit_User Guide_V1.01

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SIM7500_EVB Kit_User Guide_V1.01 22017-12-12
Document Title:
SIM7500_EVB Kit_User Guide
Version:
1.01
Date:
2017-12-12
Status:
Release
Document Control ID:
SIM7500_EVB Kit_User Guide_V1.01
General Notes
SIMCom offers this information as a service to its customers, to support application and engineering efforts
that use the products designed by SIMCom. The information provided is based upon requirements
specifically provided to SIMCom by the customers. SIMCom has not undertaken any independent search for
additional relevant information, including any information that may be in the customer’s possession.
Furthermore, system validation of this product designed by SIMCom within a larger electronic system
remains the responsibility of the customer or the customer’s system integrator. All specifications supplied
herein are subject to change.
Copyright
This document contains proprietary technical information which is the property of SIMCom Limited.,
copying of this document and giving it to others and the using or communication of the contents thereof, are
forbidden without express authority. Offenders are liable to the payment of damages. All rights reserved in
the event of grant of a patent or the registration of a utility model or design. All specification supplied herein
are subject to change without notice at any time.
Copyright © Shanghai SIMCom Wireless Solutions Ltd. 2016

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Contents
Contents..................................................................................................................................................................... 3
Version History.......................................................................................................................................................... 5
1. SIMCOM-EVB overview...................................................................................................................................... 6
2. EVB Accessory...................................................................................................................................................... 8
3. Accessory Interface................................................................................................................................................ 9
3.1 Power Interface............................................................................................................................................ 9
3.2 Audio Interface ............................................................................................................................................ 9
3.3 SIM card interface....................................................................................................................................... 9
3.4 USB Interface ............................................................................................................................................ 10
3.5 Power switch.............................................................................................................................................. 10
3.6 POWER_ON Button.................................................................................................................................. 10
3.7 RF switch................................................................................................................................................... 10
3.8 LED Indicator.............................................................................................................................................11
4. Test Interface ........................................................................................................................................................11
4.1 Test Point A.................................................................................................................................................11
4.2 Test Point B................................................................................................................................................ 12
4.3 Test Point C................................................................................................................................................ 13
4.4 Test Point D ............................................................................................................................................... 14
4.5 Test Point E................................................................................................................................................ 15
5. Illustration............................................................................................................................................................ 16
5.1 SIMCom TE installation and uninstallation .............................................................................................. 16
5.2 Power on module:...................................................................................................................................... 16
5.3 AT communication..................................................................................................................................... 17

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Figure Index
FIGURE1: SIMCOM-EVB TOP VIEW.............................................................................................................................6
FIGURE2: SIMCOM-EVB BOTTOM VIEW ...................................................................................................................7
FIGURE 3: EVB ACCESSORY.........................................................................................................................................8
FIGURE4: AUDIO INTERFACE.......................................................................................................................................9
FIGURE 5: VIRTUAL SERIAL PORT............................................................................................................................10
FIGURE 6: RF SWITCH..................................................................................................................................................10
FIGURE 7: TEST INTERFACE OVERVIEW................................................................................................................. 11
FIGURE 8:TEST POINT A.............................................................................................................................................. 11
FIGURE9: TEST POINT B..............................................................................................................................................12
FIGURE10: TEST POINT C............................................................................................................................................13
FIGURE11: TEST POINT D............................................................................................................................................14
FIGURE12: TEST POINT E ............................................................................................................................................15
FIGURE13: TE ASSEMBLY ...........................................................................................................................................16

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Version History
Data
Version
Description of change
Author
2016-07-12
1.00
Origin
shijie.yuan
2017-12-12
1.01
modification
Albert Meng
SCOPE
This document describes how to use SIMCOM-EVB to do test; user can get useful info about the SIMCOM-EVB
quickly through this document.
This document is subject to change without notice at any time.

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1. SIMCOM-EVB overview
Figure1: SIMCOM-EVB TOP view

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Figure2: SIMCOM-EVB BOTTOM view
A: USB jack
B: Powerkey
C: Reset
D: Power switch
E: RF switch
F: TE connector
G: TE connector
H: Main SIMcard holder
I: LED indicator for Netlight
J: LED indicator for Power
K: Test Point
L: Studs and nuts
M: mark of TE Module direction
N: Second SIM card holder
O: Handset jack
P: Power jack

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2. EVB Accessory
Figure 3: EVB Accessory
A: SIMCOM-EVB
B: 5V DC adapter
C: USB Cable
D: GSM/WCDMA /LTE antenna

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3. Accessory Interface
3.1 Power Interface
Pin
Signal
I/O
Description
1
Adapter input
I
5V/2.0A DC source input
3.2Audio Interface
Figure4: Audio Interface
Headset interface:
Pin
Signal
I/O
Description
1
MICN
I
Negative microphone input
2
SPKN
O
Negative receiver output
3
SPKP
I
Positive receiver output
4
MICP
O
Positive microphone input
3.3 SIM card interface
Main SIMCard holder (J202) is the primary SIM interface, Secondary slot (J203) is for special module which
supports dual sim.
Notice:
Here for SIM7500, just use main SIMcard holder (J202).

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3.4 USB Interface
EVB USB interface (A) actually is USB-to-UART port which could be imaged to two virtual ports.
Figure 5: Virtual serial port
Enhanced COM port: AT communication
Standard COM port: Debug (used for 2G module only)
Notice
CP2105 driver is available here:
http://www.silabs.com/products/mcu/Pages/SoftwareDownloads.aspx
3.5 Power switch
After 5V Adapter is inserted ,switch S201 on, then power LED (D201) will be solid on.
3.6 POWER_ON Button
After giving power to EVB,press the POWER_ON button for more than 1.5 seconds, the module will be
turned on, the network LED light (D401) will blink.
3.7 RF switch
Figure 6: RF switch

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RF switch (S401) could control module RF on or off. That’s hardware control of flight mode. When RF is on,
flight mode is off, when RF is switched off, flight mode is on.
3.8 LED Indicator
LED light work’s behaviour as below.
Name
Description
STATUS
D201
Power ON/OFF indicator
Bright：EVB Power ON;
Extinct: EVB Power OFF
D401
NET status indicator
Blinking at a certain frequency according various net status
4. Test Interface
Figure 7: Test interface overview
4.1 Test Point A
Figure 8:Test Point A
Test PointA Pin description:
Pin
Signal
I/O
Description
1
PWRKEY
I
Power on key
2
RESET
I
Reset key
3
DBG_RXD
I
Receive data
4
DBG_TXD
O
Transmit data

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5
RI
O
Ring Indicator
6
DCD
O
Data carrier detection
7
DTR
I
Data Terminal Ready
8
RXD
I
Receive data
9
CTS
O
Clear to Send
10
RTX
I
Request to Send
11
TXD
O
Transmit data
12
CHG_IN
I
Charge in detect
13
ADC1
I
ADC input
14
TEMP_BAT
I
Temperature detect
15
VBACKUP
P
Battery for RTC
16
NETLIGHT
O
LED indicator for NET Light
4.2 Test Point B
Figure9: Test Point B
Test Point B Pin description:
Pin
Signal
I/O
Description
1
STATUS
O
Module working on indicate
2
NC17
3
KBC0
I
KEYPAD input
4
5
6
KBC1
I
KEYPAD input
7
KBC2
I
KEYPAD input
8
GPIO11
I/O
GPIO
9
KBC3
I
KEYPAD input
10
KBC4
I
KEYPAD input

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11
GPIO12
I/O
GPIO
12
KBR0
I
KEYPAD input
13
KBR1
I
KEYPAD input
14
KBR2
I
KEYPAD input
15
SIM1_DET
I
SIM detect
16
KBR3
I
KEYPAD input
4.3 Test Point C
Figure10: Test Point C
Test Point C Pin description:
Pin
Signal
I/O
Description
1
KBR4
I
KEYPAD input
2
SPI_CS
O
SPI Chip Select
3
SPI_MOSI
O
SPI Data output
4
DSR
O
Data Set Ready
5
SPI_MISO
I
SPI Data input
6
SPI_CLK
O
SPI Clock output
7
PWM1
O
PWM output
8
PWM2
O
PWM output
9
VDD_EXT
P
Power output from Module
10
GND
P
GND
11
3V3
P
3.3V Power
12
1V8
P
1.8V Power
13
SD_VDD
P
Power for SD Card
14
ADC2
I
ADC input

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15
SD_DET
I
SD detect
16
2.8V
P
2.8V
4.4 Test Point D
Figure11: Test Point D
Test Point D Pin description:
Pin
Signal
I/O
Description
1
GPIO43
I/O
GPIO
2
GPIO41
I/O
GPIO
3
ISINK
AI
Ground-referenced current sink.
4
COEX1
O
RF synchronizing between Wi-Fi and LTE
5
F LIGHT
O
Flight mode
6
SIM2_DET
I
SIM detect
7
COEX2
O
RF synchronizing between Wi-Fi and LTE
8
HOST_WAKE
O
HOST WAKEUP
9
NC1
10
COEX3
O
RF synchronizing between Wi-Fi and LTE
11
NC2
12
PCM_CLK
O
PCM data bit clock
13
PCM_IN
I
PCM data input
14
PCM_OUT
O
PCM data output
15
PCM_SYNC
O
PCM data frame sync signal
16
NET_STATUS
O
NET status

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4.5 Test Point E
Figure12: Test Point E
Test Point E Pin description:
Pin
Signal
I/O
Description
1
NC12
2
WAKEUP_IN
I
WAKEUP input
3
NC11
4
RESERVED
5
NC16
6
NC3
7
NC4
8
NC15
9
NC5
10
NC10
11
NC6
12
NC7
13
NC9
14
NC8
Note: please refer to specified TE schematic for test point if there has difference.

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5. Illustration
5.1 SIMCom TE installation and uninstallation
Figure13: TE assembly
1) there are four studs on board near connectors. It’s easy to put TE in correct position without making mistake.
2) take care of TE SMA connector direction;
3) take care of the mark for TE direction on EVB board.
Uninstall and Replace TE board
1) it’s a little hard to remove TE board from EVB connector, because they are connected closely.
2) Take care of power to remove from SMAconnector side slowly.
5.2 Power on module:
1) Connect the SIM7500-TE to the 2x60pins connector on EVB, plug in 5V DC adapter, switch S201(power) on;
also make sure S401(RF) on.
2) Press the POWER_ON button for more than 1.5 second and then release, module will power on.

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After the module is on, the LED light D401 will blink at a certain frequency. Through the status LED light, you
can judge registering status of the module. For detailed description, please refer to SIMCOM HD document.
NETLIGHT pin status
NETLIGHT pin status
Module status
Always On
Searching Network/Call Connect
200ms ON, 200ms OFF
Data Transmit
800ms ON, 800ms OFF
Registered network
OFF
Power off / Sleep
5.3 AT communication
(1) Connect main antenna to the SIM7500-TE, insert SIM card to main sim slot (H).
(2) Connect the USB cable from the USB jack on SIM7500-TE board to PC, install USB driver;
(3) Open AT communication program to run AT commands. Here we select AT port.
Notice
for debug and FW upgrade, pls refer to below documentations.
1) How to take SIM7500 log with QXDM.pdf
2) How to Update SIM7500 FW version with QPST.pdf

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Contact us
Shanghai SIMCom Wireless Solutions Ltd.
Address: Building A, SIM Technology Building, No.633, Jinzhong Road, Changning District, Shanghai 200335
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website:www.simcomm2m.com