Circuit Recommended For The Sim Card Interface - Huawei MG301 Hardware Manual

HUAWEI MG301 B2B Module
HardwareGuide
Pin No.
11

3.7.2 Circuit Recommended for the SIM Card Interface

As the MG301 B2B module is not equipped with a SIM card socket, you need to place
a SIM card socket on the user interface board. The SIM card signals are transmitted
outwards through the 50-pin B2B connector interface. Figure 3-11 shows the circuit of
the SIM card interface.
Figure 3-11 Circuit of the SIM card interface
HUAWEI Module
(Modem)
Signal Name
GND
VSIM
SIM_RST
SIM_CLK
SIM_DATA
GND
33 pF 33 pF
Huawei Proprietary and Confidential Copyright ©
Huawei Technologies Co., Ltd
Issue 06 (2013-06-13)
Description of the Application Interfaces
I/O Description
- Ground signal of the SIM card
ESD protection
1.1 F 33 pF
SIM Card
Socket
26