Fibocom SC126 Istruzioni per l'installazione
SC126
Hardware Guide
V1.2
Disclaimer
This document serves as the user guide of the product. Customers shall design their
products according to the information provided in the document. Fibocom shall not be
liable for any damages caused by failure to comply with the relevant operations, design
specifications or safety rules. Due to product version update or other reasons, Fibocom
reserves the rights to modify any information in this document at any time without prior
notice and without any responsibility. Unless otherwise specified, all the statements,
information and suggestions contained in the document do not constitute any explicit or
implicit guarantee.
Copyright Statement
Copyright ©2022Fibocom Wireless Inc. All rights reserved.
Unless specifically authorized by Fibocom, the recipient of the document shall keep the
received documents and information confidential and shall not use it for any purpose
other than the implementation and development of this project. Without the prior written
permission of the copyright holder, any company or individual is prohibited to excerpt,
copy any part of or the entire document, or distribute the document in any form. For any
violation of confidentiality obligations, unauthorized use or malicious use of the
document and information in other illegal forms, Fibocom has the rights to pursue legal
responsibility.
Trademark Statement
The trademark is registered and owned by Fibocom Wireless Inc.
Other trademarks, product names, service names, and company names appearing in this
document are the properties of their respective owners.
Contact
Website: https://www.fibocom.com
Address: Floor 10-14, Block A, Building 6, Shenzhen International Innovation Valley,
Dashiyi Road, Xili Community, Xili Street, Nanshan District, Shenzhen
Tel: 0755-26733555
Safety Instruction
Do not operate wireless communication products in areas where use of radio is not
recommended without proper equipment certification. These areas include environments
where radio interference may occur, such as flammable and explosive environments, and
medical equipment, aircraft, or any other equipment that may be subject to any form of
radio interference.
Any driver or operator of a vehicle must not operate a wireless communication product
while controlling the vehicle. Doing so will reduce the driver's control and operation of
the vehicle, posing a safety risk.
The wireless communication product does not guarantee a valid connection under any
circumstances, for example, when the (U)SIM is in arrears or invalid. In case of emergency,
use the emergency call function in power-on state, and make sure the equipment is in an
area with sufficient signal strength.
Contents
Copyright © Fibocom Wireless Inc. 1
Contents
Applicable Models.............................................................................................4
Change History..................................................................................................5
1 Foreword .........................................................................................................6
1.1 Description ..................................................................................................................... 6
1.2 Reference Standards.................................................................................................... 6
2 Product Overview...........................................................................................8
2.1 General Description ..................................................................................................... 8
2.2 Main Performance........................................................................................................ 9
2.3 Function Block Diagram............................................................................................13
2.4 Pin Definition................................................................................................................15
2.4.1 Pin Distribution .....................................................................................................15
2.4.2 Pin Description......................................................................................................16
3 Application Interfaces..................................................................................30
3.1 Power Supply ...............................................................................................................30
3.1.1 Power input............................................................................................................30
3.1.2 VRTC.........................................................................................................................32
3.1.3 VPH_PWR................................................................................................................33
3.1.4 Power output.........................................................................................................33
3.2 Control Signal ..............................................................................................................34
3.2.1 Power On/Off ........................................................................................................34
3.2.1.1 Power-On.........................................................................................................34
3.2.1.2 Power-off and Reset......................................................................................36
3.2.1.3 Sleep/Wakeup.................................................................................................37
3.2.1.4 Volume Control ..............................................................................................37
3.3 USB interface ...............................................................................................................37
3.4 UART...............................................................................................................................41
3.5 SPI...................................................................................................................................42
3.6 SD....................................................................................................................................42
3.7 SIM..................................................................................................................................44
Contents
Copyright © Fibocom Wireless Inc. 2
3.8 GPIO...............................................................................................................................45
3.9 I2C...................................................................................................................................47
3.10 ADC ..............................................................................................................................48
3.11 Battery Supply Interface .........................................................................................48
3.11.1 Charging Description........................................................................................49
3.12 Motor Driver Interface ............................................................................................49
3.13 LCD...............................................................................................................................49
3.14 TP..................................................................................................................................52
3.15 Camera........................................................................................................................53
3.15.1 Camera 0..............................................................................................................55
3.15.2 Camera 1..............................................................................................................56
3.15.3 Camera 2..............................................................................................................57
3.15.4 Design Considerations .....................................................................................58
3.16 Audio............................................................................................................................59
3.16.1 Definition of Audio Interface...........................................................................59
3.16.2 MIC Circuit Design .............................................................................................61
3.16.3 Receiver Circuit Design.....................................................................................62
3.16.4 Headphone Interface Circuit Design ............................................................62
3.17 Force Download Interface......................................................................................62
4 Antenna Interface ........................................................................................64
4.1 MAIN/DRX Antenna ....................................................................................................64
4.1.1 Operating Bands ..................................................................................................64
4.1.2 Circuit Reference Design ....................................................................................67
4.2 WIFI/BT Antenna .........................................................................................................67
4.2.1 Operating Bands ..................................................................................................68
4.2.2 Circuit Reference Design ....................................................................................68
4.3 GNSS Antenna .............................................................................................................68
4.3.1 GNSS operating frequency ................................................................................69
4.3.2 Circuit Reference Design ....................................................................................69
4.4 Antenna Requirements .............................................................................................70
5 RF PCB Layout Design Guide ......................................................................72
Contents
Copyright © Fibocom Wireless Inc. 3
6 WIFI and Bluetooth......................................................................................75
6.1 WIFI Overview..............................................................................................................75
6.2 WIFI Performance.......................................................................................................75
6.3 Bluetooth Overview....................................................................................................77
6.4 Bluetooth Performance.............................................................................................78
7 GNSS ..............................................................................................................79
7.1 Overview........................................................................................................................79
7.2 GNSS Performance.....................................................................................................79
8 Electricity, Reliability and RF Performance ...............................................80
8.1 Recommended Parameters .....................................................................................80
8.2 Operating Current ......................................................................................................80
8.3 RF Transmit Power......................................................................................................88
8.4 RF Receiver Sensitivity ...............................................................................................89
8.5 Electrostatic Protection .............................................................................................92
9 Structure Specifications...............................................................................93
9.1 Product Appearance ..................................................................................................93
9.2 Structural Dimensions ...............................................................................................93
9.3 Recommended PCB Soldering Pad Design..........................................................94
9.4 Recommended Thermal Design .............................................................................94
10 Production and Storage ............................................................................95
10.1 SMT ..............................................................................................................................95
10.2 Packaging and Storage...........................................................................................95
Appendix A Acronyms and Abbreviations................................................. 102
Appendix B GPRS Encoding Scheme ......................................................... 105
Appendix C GPRS Multi-timeslot ................................................................ 106
Appendix D EDGE Modulation and Encoding Method............................ 107
Applicable Models
Copyright © Fibocom Wireless Inc. 4
Applicable Models
No.
Applicability Model
Description
1
SC126-NA-10
16GB e.MMC+16Gb LPDDR4X.SDRAM, 4G frequency
band, Android 12, applicable in North America
2
SC126-EAU-10
16GB e.MMC+16Gb LPDDR4X.SDRAM, 4G frequency
band, Android 12, applicable in Europe
3
SC126-CN-10
16GB e.MMC+16Gb LPDDR4X.SDRAM, 4G frequency
band, Android 12, applicable in China
Change History
Copyright © Fibocom Wireless Inc. 5
Change History
V1.2（2022-07-30）
Added CN RF parameters
V1.1 (2022-06-13)
Revised some description errors and added EAU RF parameters.
V1.0 (2022-04-06)
Initial version
1 Foreword
Copyright © Fibocom Wireless Inc. 6
1 Foreword
1.1 Description
This document describes the electrical characteristics, RF performance, structure size,
application environment, etc. of SC126 series module (hereinafter referred to as module).
With the assistance of the document and other instructions, the developers can quickly
understand the hardware functions of the module and develop products.
1.2 Reference Standards
This product is designed with reference to the following standards:
⚫ 3GPP TS 51.010-1 V10.5.0: Mobile Station (MS) conformance specification; Part 1:
Conformance specification
⚫ 3GPP TS 34.121-1 V10.8.0: User Equipment (UE) conformance specification; Radio
transmission and reception (FDD); Part 1: Conformance specification
⚫ 3GPP TS 34.122 V10.1.0: Technical Specification Group Radio Access Network; Radio
transmission and reception (TDD)
⚫ 3GPP TS 36.521-1 V10.6.0: User Equipment (UE) conformance specification; Radio
transmission and reception; Part 1: Conformance testing
⚫ 3GPP TS 21.111 V10.0.0: USIM and IC card requirements
⚫ 3GPP TS 51.011 V4.15.0: Specification of the Subscriber Identity Module -Mobile
Equipment (SIM-ME) interface
⚫ 3GPP TS 31.102 V10.11.0: Characteristics of the Universal Subscriber Identity Module
(USIM) application
⚫ 3GPP TS 31.11 V10.16.0: Universal Subscriber Identity Module (USIM) Application
Toolkit(USAT)
1 Foreword
Copyright © Fibocom Wireless Inc. 7
⚫ 3GPP TS 36.124V10.3.0: Electro Magnetic Compatibility (EMC) requirements for mobile
terminals and ancillary equipment
⚫ 3GPP TS 27.007 V10.0.8: AT command set for User Equipment (UE)
⚫ 3GPPTS27.005 V10.0.1: Use of Data Terminal Equipment - Data Circuit terminating
Equipment (DTE - DCE) interface for Short Message Service (SMS) and Cell Broadcast
Service (CBS)
⚫ IEEE 802.11n WLAN MAC and PHY, October 2009 + IEEE 802.11-2007 WLAN MAC and
PHY, June 2007
⚫ IEEE Std 802.11b, IEEE Std 802.11a, IEEE Std 802.11g, IEEE Std 802.11n, IEEE Std
802.11ac, IEEE Std 802.11ax;
⚫ IEEE 802.11-2007 WLAN MAC and PHY, June 2007
⚫ Bluetooth Radio Frequency TSS and TP Specification 1.2/2.0/2.0 + EDR/2.1/2.1+
EDR/3.0/3.0 +HS, August 6, 2009
⚫ Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/4.0.0, December 15, 2009
⚫ Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/4.2.0, November 7, 2014
⚫ Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/5.0.2, December 07,2017
⚫ Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/5.1.0, December 07,2018
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