Usim Card Interface; Overview - Huawei MU739 Hardware Manual

Hspa+ lga module

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HUAWEI MU739 HSPA+ LGA Module

Hardware Guide

No.

According to USB protocol, for bus timing or electrical characteristics of MU739 USB

signal, please refer to the chapter 7.3.2 of

Figure 3-14 Recommended circuit of USB interface

3.6 USIM Card Interface

The MU739 module provides a USIM card interface complying with the ISO 7816-3

standard and supports automatic detection of a 3.0 V USIM card or a 1.8 V USIM card.

Table 3-7 lists the USIM card interface signals.

Issue 01 (2011-08-24)

Pin Name

I/O

USB_ DM

I/O

USB_VBUS

The layout design of this circuit on the AP board should comply with the USB 2.0 high speed



protocol, with differential lining and impedance control to 90 ohm.

It is recommended that set USB_DP and USB_DM pins as test points and then place these



test points on the AP for debug.

You don't need to connect the USB_VBUS when the function of USB is not used.



Huawei Proprietary and Confidential

Description of the Application Interfaces

Description

USB data signal D-

Power supply for USB

Universal Serial Bus Specification 2.0.

DC Characteristics (V)

Min

Typical Max

3.3/5

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