EMB-4521 - NORCO Disclaimer Exceptfortheaccessoriesattachedtotheproductasspecifiedherein, whatiscontainedinthisusermanualdoesnotrepresentthecommitments ofNORCOCompany

EMB-4521Embedded Network Security Motherboard

User’s Manual V1.1

Disclaimer

Except for the accessories attached to the product as specified herein,

what is contained in this user manual does not represent the commitments

of NORCO Company. NORCO Company reserves the right to revise this

User Manual, without prior notice, and will not be held liable for any direct,

indirect, intended or unintended losses and/or hidden dangers due to

installation or improper operation.

Before ordering products, please learn about the product performance

from the distributors to see if it is in line with your needs. NORCO is a

registered trademark of Shenzhen NORCO Intelligent Technology CO., LTD.

The ownership of other trademarks involved in this manual is owned by its

respective owners.

The contents of this manual are protected by copyright law. All rights

are strictly reserved. Any form of unauthorized reproduction including but

not limited to carbon copy, facsimile transmission and electronic copy or

email is prohibited

Safety Instructions1. Please read the product manual carefully before using this product.

2. Put all the unused or uninstalled boards or electronic components in a static dissipate

surface or static shielding bag.

3. Always ground yourself to remove any static discharge before touching the board, to place

your hands on grounding metal object for a while or wear a grounding wrist strap at all times.

4. When taking or fetching the boards or cards, please wear anti-static gloves and have the

habit of holding the boards by its edges.

5. Make sure that your power supply is set to the correct voltage in your area. Incorrect voltage

may cause personal injuries and damage the system.

6. To prevent electronic shock hazard or any damage to the product, please ensure that all

power cables for the devices are unplugged when adding or removing any devices or

reconfiguring the system.

7. To prevent electrical shock hazard, disconnect the power cable from the electrical outlet

before relocating the system.

8. When adding or removing devices to or from the system, ensure that all the power cables for

the devices are unplugged in advance.

9. To prevent any unnecessary damage to the products due to frequent power on/off, please

wait at least 30 seconds to restart the unit after the shutdown.

10. If system goes wrong during the operation, do not try to fix it by yourself. Contact a qualified

service technician or your retailer.

11. This product is classified as Class A product, which may cause radio interference in our

living environment. In this occasion, users need to take measures to handle the interference.

Contents

Chapter 1 Product Introduction......................................................................................................... 1

1.1 Product Introduction.............................................................................................................. 1

1.2 Product Specification.............................................................................................................1

Chapter 2 Installation............................................................................................................................3

2.1 Interfaces Location & Dimension........................................................................................3

2.2 Installation Steps.................................................................................................................... 3

2.3 Interfaces Specification......................................................................................................... 4

2.3.1 SATA Port and SATA Power Supply（SATA1，SATA2、J1、J2）................4

2.3.2 Serial Port（COM）.....................................................................................................5

2.3.3 USB Port（USB）........................................................................................................ 6

2.3.4 Optical Fiber Interface and Ethernet Interface (SFP、WAN)............................6

2.3.5 Ethernet Interface（LAN1，LAN2，LAN3，LAN4）...........................................7

2.3.6 Power Interface（PWR）........................................................................................... 8

2.3.7 Key（RSTSW）.............................................................................................................8

2.3.8 Motherboard Status Indicator（SATA1_SATA2、3G_WIFI、PWR_SFP）....9

2.3.9 MINI_PCIE Port（MINI_PCIE）..................................................................................9

2.3.10 Fan Interface（ SYS_FAN ）...............................................................................10

Chapter 3 Software Function........................................................................................................... 11

3.1．Uboot Bootstrap.................................................................................................................11

3.1.1、Start the System From TFTP&NFS....................................................................11

3.1.2、Start the System From USB Flash Disk............................................................11

3.1.3、Start the System From MMC.............................................................................. 11

3.2．Openwrt Operating System............................................................................................11

3.2.1、USB.............................................................................................................................11

3.2.2、UART..........................................................................................................................11

3.2.3、SWITCH..................................................................................................................... 11

3.2.4、Network Card...........................................................................................................11

3.2.5、Optical Aperture......................................................................................................12

3.2.6、WIFI.............................................................................................................................12

3.2.7、3G................................................................................................................................12

3.2.8、SATA HDD.................................................................................................................12

3.2.9、RTC............................................................................................................................. 12

Appendix................................................................................................................................................16

Appendix 1：Glossary................................................................................................................16

Chapter

One

Product

Introdu

ction

EMB-4521 Embedded Network Security Motherboard

1

Chapter 1 Product Introduction1.1 Product Introduction

EMB-4521 motherboard is based on Marvell network dedicated 88F6820 dual core [email protected]

processor，on board 1G/2GB DDR3L memory，and 4/8/16GB EMMC，support 2x SATA3.0，1xUSB，

1xConsole，provide 3x MINI PCIe port （2x support WIFI，1x support 3/4G），1x SIM card slot （can

support 3G/4G network），1xWAN port，1xSFP optical aperture，return 4x high performance Ethernet

interface through routing chip ， on board Linux system， suitable for embedded network security

equipment and other communication industries.

1.2 SpecificationSize

●165mm X 115mm（L×W）

Processor

● MARVELL 88F6820 dual core [email protected] processor

System Memory

●On board memory：on board 1/2GB DDR3L

Storage

●FLASH: default on board 4GB iNAND FLASH，support 4/8/16GB

●2xSATA3.0 port，+5V power supply

LAN Function

●1x standard Gigabit fiber interface

●1x standard Gigabit Ethernet interface

●Provide one 4-channel RJ45 port 10/100/1000M network switch

USB Port

●1 x standard USB 2.0 port

COM Port


2

●1xconsole port，support RS232 model

Expansion Interface

●3XMINI PCIe：MINI PCIe 1 and 2 support WiFi module，MINI PCIe 3 support 3G/4G module

●On board SIM card slot，can support 3G/4G network，need to be used in conjunction with MINI

PCIe 3G/4G..

Power Supply

●+12V single power supply

BIOS

●Boot loader BIOS

Environment

●Operating Temperature：-20℃～+60℃

●Storage Temperature：-40℃～+85℃

Chapter

Two

Install

ation

Instruc

tion


3

Chapter 2 Installation Instruction2.1 Interfaces Location and Dimension

Following picture illustrate the interfaces location and dimension of board EMB-4521.

Please pay attention to the installation instructions. Improper installation of some components

will lead to system malfunction.

Note: If posiible, wear anti-static gloves when handling the equipment. Otherwise, the

static electricity can damage many of the electronic components.

Dimension & Interfaces Location of EMB-4521

2.2 Installation StepsPlease follow the steps below to assemble your computer：

1：Refer to the manual and adjust all the jumpers of board EMB-4521.

2：Install other expansion cards.

3：Connect all signal cable, power cable, panel control cable and power supply unit.

4：Start the computer and complete the BIOS settings.


4

Key components of this motherboard are integrated circuit, and these componentswill be easily damaged by electrostatic influence. So, before installing the motherboard,

you should always keep the following precautions in mind：

1. Hold the board by edges, don’t touch any components or plug and socket pins;

2. Wear anti-static gloves/wrist strap while touching the integrated circuit components, such as

CPU, RAM, etc;

3. To prevent electrostatic build-up, leave the component in its anti-static bag until you are

ready to install it.;

4. Please make sure the power switch is off before connecting the power plug.

2.3 Interfaces Description

Please read the following instructions carefully before you connecting the externalconnectors in case of any damage caused to the motherboard！

2.3.1 SATA port and SATA Power Supply（SATA1，SATA2、J1、J2）

Board provides 2x3.0SATA port；And 2xSATA power interface.

SATA1、SATA2：

Pin Signal Name

1 GND

2 TX+

3 TX-

SATA1

SATA2

J2

J1


5

4 GND

5 RX-

6 RX+

7 GND

J1、J2：

Pin Signal Name

1 GEN_3V3

2 GND

3 VCC5

4 GND

2.3.2 Serial Port（COM）

Board provides 1 x RJ45 form serial port（console port），support RS232 transmission

mode.

Console port：

Signal Name Pin Signal Name

NC 1 2 NC

COM0_SOUT 3 4 GND

GND 5 6 COM0_SIN

NC 7 8 NC

COM


6

GND 9 10 GND

NC 11 12 NC

2.3.3 USB Port（USB）

Board with1xstandard USB2.0 port.

USB：

Pin Signal Name

1 +5V

2 DATA-

3 DATA+

4 GND

2.3.4 Optical Fiber Interface and Ethernet Interface (SFP、WAN)

Provide 1x Gigabit fiber Interface，1x Gigabit Ethernet interface，rate：10/100/1000MBps

USB


7

RJ45 LAN LED Status：

LILED（Green） Function ACTLED（Yellow） Function

ON 100/1000M Link FLASH Data transferring

OFF 10M Link/Close OFF No data

2.3.5 Network Interfaces（LAN1，LAN2，LAN3，LAN4）

Provide 1x4 network port network switch， supporting network switching function； Yellow

denotes data transmission status, green denotes network connection status.

RJ45 LAN LED Status：

LILED（Green） Function ACTLED（Yellow） Function

ON 100/1000M Link FLASH Data transferring

LAN1_4

Optical Fiber Interface

（SFP）

Ethernet interface（WAN）


8

OFF 10M Link/Close OFF No data

2.3.6 Power Interface（PWR）

PWR：

Pin Signal Name

1 +PWR

2 GND_IN

2.3.7 Key（RSTSW）

Reset key：Screen Printing : RSTSW，Pressing this key will directly perform the system

hardware reset action.

PWR

Reset（RSTSW）


9

RSTSW：

Pin Signal Name

1 GND

2 JFP_RCT

3 NC

4 NC

2.3.8 Motherboard status indicator（SATA1_SATA2、3G_WIFI、PWR_SFP）

Power indicator light：Screen Printing is PWR，green LED light，The LED lamp will not turn

on when the power is not on, and the green light will always turn on when the power is on.

HDD indicator light：Screen Printing is: SATA1_SATA2，green LED light，When the hard

disk is not read or written, the LED lamp is not on, and the hard disk is green when it is read or

written.

3G_WIFI indicator light：Screen Printing is: 3G_WIFI，Green LED lamp, when data is not

transmitted, the LED lamp is OFF, and when data is transmitted, the green light is ON.

SFP indicator light：Screen Printing is: SFP，Green LED lamp, when data is not transmitted,

the LED lamp is OFF, and when data is transmitted, the green light is ON.

2.3.9 MINI_PCIE Interface（MINI_PCIE）

Board with 3xMINI PCIe：MINI PCIe 1 and 2 support WiFi module，MINI PCIe 3 support

3G/4G module；On board SIM card slot，can support 3G/4G network，need to be used in

SATA1_SATA2 、 3G_WIFI 、

PWR_SF indicator


10

conjunction with MINI PCIe 3G/4G module，users can expand Mini PCIE devices according to

their own needs.

2.3.10 Fan Interface（SYS_FAN）

Board with 1x 3Pin SYS_FAN port，the following two points should be noted when using

fans：

（1）Fan current should be no greater than 350 mA（4.2 W，12 V）.

（2）Make sure that the fan wiring and the outlet wiring match. The power cord (usually red)

is in the middle. Another is the earth wire (usually black) and the fan speed output pulse signal

line (other colors). Some fans have no speed detection, but the lead wire has up to 12V output,

which will damage the motherboard.

ChapterThree

SoftwareFunction


11

Chapter Three Software Function

3.1．Uboot bootstrapThere are three system startup modes supported under Uboot

3.1.1、Start the system from TFTP&NFS

Load the kernel from the tftp server with the tftpboot command

Specifying file systems on nfs servers with nfsroot

3.1.2、Start the system from USB flash disk

Format USB flash disk as Linux file system type ext4, store decompressed file system

and kernel image

Loading the kernel with ext2load usb 0:1 kernel

Specifying file systems with root=/dev/sda1 rw rootwait

3.1.3、Start the system from MMC

Loading the kernel with fatload mmc 0:1 kernel

Specifying file systems with root=/dev/mmcblk0p3 rw rootwait

3.2．Openwrt Operating System3.2.1、USB

1xUSB port support USB flash disk

USB flash disk automatic mounting directory:/mnt/udisk/

3.2.2、UART

Serial operating node: /dev/console

3.2.3、SWITCH

4xLAN ports port0~port3，correspond to eth2

3.2.4、Network Card

WAN port correspond to eth0


12

3.2.5、Optical Fiber Splice

WAN port correspond to eth1

3.2.6、WIFI

PCIE port，Different network adapter names for different WIFI modules.

3.2.7、3G

USB port’s miniPCIE port，Different network adapter names for different 3G modules.

3.2.8、SATAHDD

2xSATA port

Hard Disk automount directory:/mnt/udisk/

3.2.9、RTC

Operating RTC device nodes are: /dev/rtc0

date -s "2017-03-24 14:27:35"

hwclock -w

Appen

dix


16

AppendixAppendix 1: Glossary

ACPI

Advanced Configuration and Power Management. ACPI specifications allow O/S to control

most power of the computer and its add-ons.

BIOS

Basic input/output system. It is a kind of software including all in/out control code interface in

PC. It will do hardware testing while system is booting, and then the O/S runs. BIOS provides a

interface between O/S and hardware and is stored in a ROM chip.

BUS

In a computer system, it is the channel among different parts for exchanging data; it’s also a

group of hardware lines. BUS here refers to part lines inside CPU and main components of

memory.

Chipset

Integrated chips for executing one or more functions. Here “Chipset” refers to system level

chipset structured by Southbridge & Northbridge; it determines motherboard’s structure and

main functions.

CMOS

Complementary Metal-Oxide Semiconductor, a widely used semiconductor with the

characteristic of high speed but low-power-consumption. CMOS here refers to part of reserved

space in on-board CMOS RAM, for saving date, time, system information and system

parameter etc.

COM

Computer-Output Microfilmer. A universal serial communication interface, usually adopts

normative DB9 connector.


17

DIMM

Dual-Inline-Memory-Modules. It is a small circuit board with memory chipset providing 64 bit

memory bus width.

DRAM

Dynamic Random Access Memorizer. It’s a normal type of memory often with a transistor and

a capacitance to store 1 bit. With the development of the technology, more and more types of

DRAM with different specifications exist in computer applications. For example：SDRAM、DDR

SDRAM and RDRAM.

I2C

Inter－Integrated Circuit generically referred to as "two-wire interface", is a multi-master

serial single-ended computer bus invented by Philips that is used to attach low-speed

peripherals to a motherboard, embedded system, or cellphone.

LAN

Local Area Network. Network grouped by correlative computers in a small area, generally in a

company or a building. Local area network is buildup by sever, workstation, some

communications links. Terminals can access data and devices anywhere through cables, which

enables users to share costly devices and resource.

LED

Light-Emitting Diode. A semiconductor device that lighted when power supply is connected, it is

often used to indicate information directly, for example, to indicate power on or HDD working

normally.

PnP

It is a specification that allows PC to configure its external devices automatically and it works

independently without the manual operation. To achieve this function, BIOS should be able to

support PnP and a PnP expansion card is also necessary.

POST

Power On Self Test. While the system is booting, BIOS will keep testing the system which


18

including RAM, keyboard, hard disk driver to check if all the components are connected directly

and function well.

PS/2

A keyboard & mouse connective interface specification developed by IBM. PS/2 is a DIN

interface with only 6PIN; it also can connect other devices, like modem.

USB

It is the Universal Serial Bus for short. A hardware interface adapts to low speed peripherals,

and is always used to connect keyboard, mouse etc. One PC can connect maximum 127 USB

devices, providing 12Mbit/s transmit bandwidth USB supports hot swap and multi-data stream,

namely, you can plug USB devices while system is running, system can auto-detect and makes

it work on.

Documents

EMB-4521 - NORCO Disclaimer Exceptfortheaccessoriesattachedtotheproductasspecifiedherein, whatiscontainedinthisusermanualdoesnotrepresentthecommitments ofNORCOCompany