HUAWEI EM820W HSPA+ PC Embedded Module

 

Hardware Guide

Description of the Application Interfaces

3 Description of the Application Interfaces

3.1 About This Chapter

This chapter mainly describes the external application interfaces of the EM820W module, including:

zMini PCI Express Interface

zPower Sources and Grounds

zPower Supply Time Sequence

zUSB Signals

zUSIM Signals

zW_DISABLE# Signal

zLED_WWAN# Signal

zWAKE_NB_N Signal

zNC Pins

3.2Mini PCI Express Interface

The EM820W has a standard Mini PCI Express interface, which consists of several major signals, as shown in the following table.

Table 3-1Pin definitions of the Mini PCI-E Interface

Definition of the EM820W Mini PCI Express pins

Pin

 

Mini PCI

HUAWEI Pin

Additional

Direction to

No.

 

Express

Description

Description

Module

 

 

Standard

 

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

WAKE#

WAKE_NB_N

Open collector active

Output

1

 

 

 

low signal. This signal

 

 

 

 

is used to wake up the

 

 

 

 

 

 

 

 

 

 

host.

 

 

 

 

 

 

 

Issue 01 (2010-12-31)

Huawei Proprietary and Confidential

5

Copyright © Huawei Technologies Co., Ltd.

 

 

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Huawei EM820W manual Description of the Application Interfaces, Mini PCI Express Interface

EM820W specifications

The Huawei EM820W is a cutting-edge mobile broadband device that exemplifies Huawei's commitment to innovation and excellence in the telecommunications sector. Designed for seamless connectivity, the EM820W caters primarily to users who demand high-speed data access while on the move.

One of the standout features of the Huawei EM820W is its support for high-speed 4G LTE connectivity. With download speeds that can reach up to 150 Mbps and upload speeds of up to 50 Mbps, users can enjoy smooth streaming, rapid downloads, and responsive online gaming experiences. This capability makes the device an ideal choice for both individual users and business professionals who rely on robust internet access.

The EM820W is equipped with a compact and lightweight design, making it highly portable. This device can be easily carried in a pocket or bag, allowing users to stay connected wherever they go. Its plug-and-play feature simplifies the setup process, ensuring that even those who are not tech-savvy can easily get online.

Another notable aspect of the Huawei EM820W is its compatibility with a wide range of operating systems, including Windows, macOS, and various distributions of Linux. This versatility means that users can connect the device to their preferred platforms without facing compatibility issues, enhancing the overall user experience.

The device also incorporates advanced security features to safeguard user data, including built-in encryption protocols. This is particularly important for business users who require secure connections for sensitive transactions and communications.

In addition to its connectivity capabilities, the EM820W showcases energy-efficient technologies that optimize battery performance. The device is designed to consume minimal power, allowing users to prolong usage times without frequently recharging.

The Huawei EM820W comes with a user-friendly interface, enabling users to easily manage their connections and monitor data usage. This feature is valuable for those who need to track their internet consumption to avoid exceeding data limits imposed by service providers.

With its blend of speed, portability, and user-oriented features, the Huawei EM820W stands out as a reliable solution for those seeking robust mobile broadband capabilities. Whether for personal use or professional needs, this device ensures that users remain connected in an increasingly digital world.