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HUAWEI ME909 Series Mini PCIe Module
Hardware Guide
Description of the Application Interfaces
Issue 0.1 (2013-06-09)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
19
Table 3-3 Definition of the USB interface
Pin No.
Pin Name
I/O
Description
DC Characteristics (V)
Min.
Typ.
Max.
36
USB_DM
I/O
USB signal D-
-
-
-
38
USB_DP
I/O
USB signal D+
-
-
-
According to USB protocol, for bus timing or electrical characteristics of ME909 USB
signal, please refer to the chapter 7.3.2 of Universal Serial Bus Specification 2.0.
Figure 3-8 Recommended circuit of USB interface
3.10 USIM Card Interface
3.10.1 Overview
The ME909 module provides a USIM card interface complying with the ISO 7816-3
standard and supports both Class B and Class C USIM cards.
Table 3-4 USIM card interface signals
Pin
No.
Pin Name
I/O
Description
DC Characteristics (V)
Min.
Typ.
Max.
14
UIM_RESET
O
External USIM
reset signal.
-
1.8/2.85
-
12
UIM_CLK
O
External USIM
clock signal
-
1.8/2.85
-
10
UIM_DATA
I/O
External USIM
data signal
-
1.8/2.85
-