User's Manual

6/13 Rev1.2
3. USIM interface
The USIM pins provide the connections necessary to interface to a USIM socket located
on the host device. Voltage levels over this interface comply with 3GPP standards.
MSEEI module outputs a SIMPWR power rail 1.8V and 3V.
Pin NO.
Pin name
Description
36
SIMPWR
1.8V/3V output to SIM card.
34
SIMIO
SIM data IO
32
SIMCLK
SIM clock
30
SIMRST
SIM reset
The reference circuit is showing in Figure3-1as following.
Figure3-1: USIM card connection