LN920 HW Design Guide
1VV0301730 Rev. 1
Page 44 of 81
2021-08-11
Not Subject to NDA
6.5.2.
SIM Interface
The LN920 supports two external SIM interfaces (1.8V or 2.85V).
PIN
Signal
I/O Function
Type
SIM Card Interface 1
36
UIM1_PWR
O
Supply
output for
an
external
UIM1 card
1.8V / 2.85V
34
UIM1_DATA
I/O
Data
connection
with an
external
UIM1 card
1.85 / 2.85V
32
UIM1_CLK
O
Clock
output to
an
external
UIM1 card
1.85 / 2.85V
30
UIM1_RESET
O
Reset
output to
an
external
UIM1 card
1.85 / 2.85V
66
UIM1_PRESENT
I
SIM1
detect
signal
1.8V
SIM Card Interface 2
48
UIM2_PWR
O
Supply
output for
an
external
UIM2 card
1.8V / 2.85V
42
UIM2_DATA
I/O
Data
connection
with an
external
UIM2 card
1.85 / 2.85V
44
UIM2_CLK
O
Clock
output to
an
external
UIM2 card
1.85 / 2.85V
46
UIM2_RESET
O
Reset
output to
an
external
UIM2 card
1.85 / 2.85V
