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This document describes how electrostatic discharge (ESD) occurs, how to conduct ESD tests, how interfering signals resulted from ESD are coupled to circuits of electronic devices, and what rules need to be followed during ESD design for Huawei LGA modules. Following these rules can provide users with good ESD performance during applications of Huawei LGA modules.

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This document describes the rules and precautions of designing Printed Circuit Board (PCB) interconnection for the HUAWEI LGA module. By observing the rules, users can ensure the performance of this module in use and reduce costs effectively.

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This document provides instructions for storage, packing, SMT assembly, and rework of the HUAWEI LGA module, and serves as a guide to secondary assembly of the HUAWEI LGA module. Meanwhile, this document provides PCB design guide for module assembly requirements of producibility and maintainability
The HUAWEI LGA module has two types of packaging:

PCB145-3030M: 145 pin LGA with a dimension of 30 mm × 30 mm
PCB114-3020M: 114 pin LGA with a dimension of 30 mm × 20 mm

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The purpose of this document is to describe some hardware specification which is useful to develop a product with HUAWEI LGA module supporting PCM (Pulse- Coded Modulation). This document is intended for HUAWEI customers who are integrators and about to implement their applications by using our module.

The HUAWEI LGA module supports the PCM, which can be used for the module to transmit and receive digital audio data. Linear and μ-law codecs are supported. The HUAWEI LGA module uses the PCM interface as part of the audio front end; it easily allows for an external codec to be used instead of the internal codec. As an example, through the PCM you could connect a HUAWEI LGA module to a Bluetooth device.

The HUAWEI LGA module has one PCM port. Please refer to the Hardware Guide of the module that you are in use to know the PIN number of the PCM ports.

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Communications through universal asynchronous receiver/transmitter (UART) serial ports is convenient and reliable. UART serial ports are widely adopted in Huawei modules. This design guide describes the serial port specifications of Huawei modules and provides recommended design schemes for peripheral circuits. When designing UART serial ports for Huawei modules, customers can refer to this document.

Most of Huawei modules provide 8-wire serial ports with flow control. These 8-wire serial ports can also be used as 2-wire or 4-wire serial ports.

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This document briefly describes the power management related connection hardware
between the host and module.

This document is only applicable to the Windows XP/Android system; and is not
applicable to the Windows 7/8/blue system and later systems released by Microsoft
because of their feature (they defines their own sleep, wakeup and remote wakeup
standards).

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This document describes the brief hardware information of ME909 series module.
This document helps hardware engineer to understand the interface specifications, electrical features and related product information of the ME909 series module.

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Uploaded at
2013-04-05 12:11:21
Last updated
2015-09-24 19:24:36
Version
01
Related products
Huawei ME909u-523D - US - AT&T
Huawei ME909u-521 developer kit

Data sheet for ME909u-523 (US).

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Uploaded at
2013-09-23 11:20:57
Last updated
2015-09-24 19:17:12
Related products
Huawei ME909u-523D Mini PCI Express - US - AT&T
Huawei ME909u-523D - US - AT&T

LGA Antenna Interfaces Design Guide for ME909u-523 and later modules.

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Uploaded at
2014-01-20 16:13:23
Last updated
2015-09-24 19:09:54
Version
2
Related products
Huawei ME909u-523D - US - AT&T

This document is intended to provide references for customers to choose appropriate
command sequences to start using the ME909u-523 module in a faster manner. This
document also contains examples and relevant description.

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Uploaded at
2015-03-17 10:57:55
Last updated
2015-09-24 18:11:45
Version
04
Related products
Huawei ME909u-523D Mini PCI Express - US - AT&T
Huawei ME909u-523D - US - AT&T

This document describes AT command interface specification that is supported by
Huawei mobile broadband product ME909u-523 module.

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Uploaded at
2015-03-17 11:04:27
Last updated
2015-09-24 18:11:33
Version
02
Related products
Huawei ME909u-523D Mini PCI Express - US - AT&T
Huawei ME909u-523D - US - AT&T

This document describes the hardware application interfaces and air interfaces
provided by HUAWEI ME909u-523 LTE LGA module .

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Uploaded at
2015-03-17 11:07:15
Last updated
2015-09-24 18:11:23
Version
1
Related products
Huawei ME909u-523D Mini PCI Express - US - AT&T
Huawei ME909u-523D - US - AT&T

This is the datasheet for the Huawei module ME909u-523 LGA.

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Uploaded at
2015-06-16 18:58:49
Last updated
2015-09-24 17:35:24
Version
01
Related products
Huawei ME909u-523D - US - AT&T