MEIG SLM156 - USIM;SIM Card Interface Pin Description

MeiG_SLM156_Hardware Design Manual
MeiG Smart Technology Co., Ltd
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3.9.1 USIM/SIM Card Interface Pin Description
USIM/SIM card interface signals of SLM156 are as follows.
Table 8 USIM/SIM card interface
Pin name
Pin number
I/O
Description
Note
USIM_DATA
67
IO
USIM card data
signal
USIM_CLK
66
DO
USIM card clock
signal
USIM_RST
65
DO
USIM card reset
signal
VDD_AUDIO
66
PI
USIM POWER
1.8V
USIM_PRESENT
68
DI
USIM card
plugging detection
Require to pull up
to1.8V
SLM156 module supports USIM card hot pkugging function through USIM_PRESENT pin and high
level detection, the hot plugging function is defaulted as closed. In the figure, when a card is inserted in
SLM card slot, USIM_PRESENT pin is in high level; when there is no card, USIM_PRESENCE is in low
level.
Figure 7 Reference Circuit for 8-pin USIM/SIM Connector