Sim - LG LG9200 Service Manual

3.1.12 SIM

• SIM Interface
The Sim Card digital interface in ABB insures the translation of logic levels between DBB and Sim Card,
for the transmission of 3 different signals:
- A clock derived from a clock elaborated in DBB, to the Sim-Card (DBBSCK -> SIM_CK)
- A reset signal from DBB to the Sim Card (DBBSRST -> SIM_RST),
- A serial data from DBB to the Sim Card (DBBSIO -> SIM_IO) and vice-versa.
The SIM card interface can be programmed to drive a 1.8V or 3V Sim Card.
SIM Card connection scheme
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3. Technical Brief