HUAWEI MU509-65 HSDPA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 01 (2016-04-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
37
Since the USB interface of MU509-65 module supports USB 2.0 full speed, the TVS "D102
and D103" in the Figure 3-19 must be parasitic capacitor with small capacitance
(RClamp0521P.TCT manufactured by SEMTECH or ESD0P2RF-02LRHE6327
manufactured by INFINEON is recommended; or you can choose other components with
the same specification). In addition, the layout design of this circuit on the DTE board should
comply with the USB 2.0 full speed protocol, with differential lining and impedance control to
90
Ω.
It is recommended to set USB_DM and USB_DP pins as test points and then place these
test points on the DTE for debugging.
3.7 USIM Card Interface
3.7.1 Overview
The MU509-65 module provides a USIM card interface complying with the ISO 7816-3
standard and supports automatic detection of a Class B USIM card or a Class C USIM
card. Table 3-11 lists the USIM card interface signals.
Table 3-11
USIM card interface signals
Pin
No.
Pin
Name
Pad
Type
Description
Parameter Min. (V) Typ. (V) Max. (V) Comments
89
USIM_
DATA
I/O
External
USIM data
signal
V
OH
1.65/2.7
1.8/2.85
1.95/3.0
USIM_VCC=
1.8 V/2.85 V
V
OL
0
-
0.36/0.57
V
IH
1.65/2.7
1.8/2.85
1.95/3.0
V
IL
0
-
0.36/0.57
90
USIM_
CLK
O
External
USIM clock
signal
V
OH
1.65/2.7
1.8/2.85
1.95/3.0
USIM_VCC=
1.8 V/2.85 V
V
OH
0
-
0.36/0.57
34
USIM_
VCC
PO
Power source
for the
external USIM
-
1.65
1.8
1.95
USIM_VCC=
1.8 V
-
2.7
2.85
3.0
USIM_VCC=
2.85 V
88
USIM_
RESET
O
External
USIM reset
signal
V
OH
1.65/2.7
1.8/2.85
1.95/3.0
USIM_VCC=
1.8 V/2.85 V
V
OL
0
-
0.36/0.57
As the MU509-65 module is not equipped with a USIM card socket, you need to place
a USIM card socket on the user interface board. The USIM card signals are
transmitted outwards through the 145-pin LGA interface. Figure 3-20 shows the circuit
of the USIM card interface.
