HUAWEI MC509 Series CDMA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 02 (2013-05-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
38
Table 3-9
RUIM card interface signals
Pin No. Pin Name
I/O Description
DC Characteristics (V)
Min.
Typ.
Max.
34
RUIM_VCC
O
Power source for the
external RUIM.
1.8/2.85
89
RUIM_DATA
I/O
External RUIM data
signal.
1.8/2.85
90
RUIM_CLK
O
External RUIM clock
signal.
1.8/2.85
88
RUIM_RESET O
External RUIM reset
signal.
1.8/2.85
3.7.2
Circuit Recommended for the RUIM Card Interface
As the MC509 module is not equipped with a RUIM card socket, a RUIM card socket
need to be placed on the user interface board. The RUIM card signals are
transmitted outwards through the 145-pin LGA interface. Figure 3-16 shows the
circuit of the RUIM card interface.
Figure 3-16
Circuit of the RUIM card interface
