User's Guide
xE922-3GR Hardware User Guide
1VV0301272 Rev.0.8 2017-01-05
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Reserved. Page 55 of 112
8. USIM interface
xE922-3GR supports two external USIM interfaces (dual volt 1.8/3V) compatible with ISO
7816-3 IC Card standard.
PAD
Signal
I/O
descriptions Type
SIM card interface 1
AM5
VSIM1
-
External SIM signal 1 – Power supply for the SIM
1.8 / 2.85V
AR6
SIMCLK1
O
External SIM signal 1 – Clock
1.8 / 2.85V
AN10
USIM1_DETECT
I
External SIM signal 1 – Card detect (Active low)
CMOS 1.8V
AT6
SIMIO1
I/O
External SIM signal 1 – Data I/O
1.8 / 2.85V
AN6
SIMRST1
O
External SIM signal 1 – Reset
1.8 / 2.85V
SIM card interface 2
AK3
VSIM2
-
External SIM signal 2 – Power supply for the SIM
1.8 / 2.85V
AS7
SIMCLK2
O
External SIM signal 2 – Clock
1.8 / 2.85V
AR10
USIM2_DETECT
I
External SIM signal 2 – Card detect (Active low)
CMOS 1.8V
AU7
SIMIO2
I/O
External SIM signal 2 – Data I/O
1.8 / 2.85V
AP7
SIMRST2
O
External SIM signal 2 – Reset
1.8 / 2.85V
Next figure illustrates how a typical SIM socket should be connected.