eInfochips Eragon 624 SOM Quick user guide

Hardware Reference Manual SOM
Version 1.0 - ii - eInfochips Confidential
Confidentiality Notice
Copyright (c) 2019 eInfochips. - All rights reserved
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in all countries in the world. This document is provided under a license to use only with all other rights,
including ownership rights, being retained by eInfochips. This file may not be distributed, copied, or
reproduced in any manner, electronic or otherwise, without the express written consent of eInfochips.
FCC ID: 2ATUP-Q624300
IC: 25301-Q624300

Hardware Reference Manual SOM
Version 1.0 - iii - eInfochips Confidential
Contents
1 Document Details..................................................................................................................................7
1.1 Document History .........................................................................................................................7
1.2 Definition, Acronyms and Abbreviations......................................................................................7
1.3 References ..................................................................................................................................10
2 License Agreement..............................................................................................................................11
3 Preface ................................................................................................................................................12
Intended Audience......................................................................................................................12
Intended Use...............................................................................................................................12
4 Overview .............................................................................................................................................13
Key Features................................................................................................................................14
Applications.................................................................................................................................15
5 Getting Started....................................................................................................................................16
Prerequisites ...............................................................................................................................16
Starting the Eragon624 SOM for the first time with Eragon624 Carrier ....................................16
6 System Block Diagram.........................................................................................................................17
ERAGON624 BOARD IMAGE........................................................................................................18
Major Blocks of ERAGON624 SOM Module................................................................................31
6.2.1 Processor APQ8053 - Features and interfaces....................................................................31
6.2.2 Memory Interface ...............................................................................................................32
6.2.3 Wi-Fi + BT Interface.............................................................................................................32
6.2.4 GPS Interface.......................................................................................................................32
6.2.5 PMIC Interface ....................................................................................................................33
6.2.6 System LEDs ........................................................................................................................33
6.2.7 Shielding..............................................................................................................................33
Guidelines to Design Carrier Board............................................................................................. 34
6.3.1 Power Supply ......................................................................................................................34
6.3.2 Boot Configuration..............................................................................................................34
6.3.3 General Purpose Keys (as per Eragon624 Carrier Board) ...................................................35
6.3.4 USB Interface ......................................................................................................................35

Hardware Reference Manual SOM
Version 1.0 - iv - eInfochips Confidential
6.3.5 Audio Interface....................................................................................................................35
6.3.6 Sensors................................................................................................................................39
6.3.7 Micro SD Card .....................................................................................................................39
6.3.8 DSI to HDMI.........................................................................................................................40
6.3.9 HDMI to CSI Audio interface ...............................................................................................41
6.3.10 WiFi + BT chip antenna .......................................................................................................42
6.3.11 GPS chip antenna ................................................................................................................43
6.3.12 M.2 (4G LTE) connector ......................................................................................................43
6.3.13 RTC ......................................................................................................................................47
6.3.14 Debug Port ..........................................................................................................................47
7 Electrical Specification ........................................................................................................................48
Absolute Maximum Ratings........................................................................................................48
Operating Conditions..................................................................................................................48
8 Mechanical Specification ....................................................................................................................49
SOM Board Dimensions ..............................................................................................................49
Shields Dimensions .....................................................................................................................49
9 Special Care when using ERAGON624 SOM Board.............................................................................51
Development Device Notice .......................................................................................................51
Anti-Static Handling Procedure...................................................................................................51
10 About eInfochips.................................................................................................................................52

Hardware Reference Manual SOM
Version 1.0 - v - eInfochips Confidential
List of Figures
Figure 1 –ERAGON 624 SOM Block Diagram ............................................................................................17
Figure 2 –ERAGON624 SOM Top View......................................................................................................18
Figure 3 –ERAGON624 SOM BOT View.....................................................................................................18
Figure 4 –Boot Configuration Switch (SW1) schematic............................................................................34
Figure 5 –Boot Configuration Switch (SW1) .............................................................................................35
Figure 6 –General Purpose Keys ...............................................................................................................35
Figure 7 –WCD9335 Audio Code Daughter Board (custom made by eInfochips) ...................................36
Figure 8 –Schematic-1 on Carrier Board for Audio Code Daughter Board ..............................................36
Figure 9 –Schematic-2 on Carrier Board for Audio Code Daughter Board ..............................................37
Figure 10 –Audio Headset Jack .................................................................................................................37
Figure 11 –Audio Headset Jack schematic................................................................................................37
Figure 12 –Analog and Digital Codec Headers (J17 & J18).......................................................................38
Figure 13 –Micro SD card connector schematic for carrier......................................................................40
Figure 14 –DSI to HDMI Audio Connector J26 ..........................................................................................41
Figure 15 –HDMI to CSI Audio Connector J27 ..........................................................................................42
Figure 16 –Routing of UFL cable from SOM to Carrier.............................................................................43
Figure 17 –Routing of UFL cable from SOM to Carrier.............................................................................43
Figure 18 –M.2 connector (J35).................................................................................................................44
Figure 19 –SIM card connectors (J38 & J36).............................................................................................44
Figure 20 –RTC connector (J8)...................................................................................................................47
Figure 21 –Debug Port connection (J22)...................................................................................................47
Figure 22 –SOM Module Dimension.........................................................................................................49
Figure 23 –SOM Module TOP side Shields................................................................................................49
Figure 24 –SOM Module BOT side Shield.................................................................................................50

Hardware Reference Manual SOM
Version 1.0 - vi - eInfochips Confidential
List of Tables
Table 1: Document History ...........................................................................................................................7
Table 2 : Definition, Acronyms and Abbreviations .......................................................................................9
Table 3 : References....................................................................................................................................10
Table 4: ERAGON 624 BOOT Configuration options ...................................................................................34
Table 5: Headset (J19) Pinout .....................................................................................................................38
Table 6: Audio Header (J17) Pinout ............................................................................................................39
Table 7: Audio Header (J18) Pinout ............................................................................................................39
Table 8: HDMI Audio Connector (J26) Pinout.............................................................................................41
Table 9: HDMI Audio Connector (J27) Pinout.............................................................................................42
Table 10: M.2 connector (J35) Pinout.........................................................................................................46
Table 11: SIM CARD_1 connector (J38) Pinout...........................................................................................46
Table 12: SIM CARD_2 connector (J36) Pinout...........................................................................................46
Table 13: Debug Port Connector (J22) Pinout ............................................................................................ 47
Table 14 : Absolute Maximum Ratings .......................................................................................................48
Table 15 : Operating Conditions .................................................................................................................48

Hardware Reference Manual SOM
Version 1.0 - 7 - eInfochips Confidential
1Document Details
1.1 Document History
Version
Author
Reviewer
Approver
Description
Of Changes
Name
Date
Name
Review
Comment
ID
Name
Date
1.0
eInfochips
18-July 19
eInfochi
ps
Initial release
Table 1: Document History
1.2 Definition, Acronyms and Abbreviations
Definition/Acronym/Abbreviation
Description
BLE
Bluetooth Low Energy
BOM
Bill of Material
BT
Bluetooth
CPU
Central Processing Unit
CSI
Camera Serial Interface
DC
Direct Current
DDR
Double Data Rate
DSI
Display Serial Interface
eI
eInfochips
GB
Giga Byte
GPIO
General Purpose Interface
GPS
Global Positioning System
HD
High Definition

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Version 1.0 - 8 - eInfochips Confidential
HDMI
High Definition Multimedia Interface
I2C
Inter-Integrated Circuit
IC
Integrated Circuit
Inc.
Incorporated
JTAG
Joint Test Application Group
KB
Kilo Byte
LAN
Local Area Network
LPDDR
Lower Power DDR
MIPI
Mobile protocol working Alliance (not an Acronym)
MISO
Master In Slave Out
MMC
Multi Media Card
MOSI
Master Out Slave In
MP
Mega Pixel
OTG
On The Go
PLL
Phase Loop Locked
PMIC
Power Management IC
RAM
Random Access Memory
RF
Radio Frequency
RoHS
Restriction of Hazardous Substances
Rx
Receive
SOM
System On Module
SPI
Serial peripheral Interface
Tx
Transmit

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Version 1.0 - 9 - eInfochips Confidential
UART
Universal Asynchronous Interface
USB
Universal Serial Bus
ADB
Android Debug Bridge
WLAN
Wireless LAN
Table 2 : Definition, Acronyms and Abbreviations

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1.3 References
No.
Document
Version
Remarks
1
ERAGON624 SOM Schematic File
1.3
2.
ERAGON624 Carrier Schematic File
1.3
Table 3 : References