LG LG-A270 - Hazardous Areas and Aircraft Use

3. TECHNICAL BRIEF
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Only for training and service purposes
LGE Internal Use Only
3.7 SIM Card Interface
VA216
DNI
DNI
VA219
C223
1u
DNI
VA217
VA218
DNI
R225
DNI
VSIM1
R226
DNI
VSIM1
DNI
R227
VSIM1
DNI
R222
J200
C11 C10
C12 C9
C7 C3
C6 C2
C5 C1
VCCGND1
RSTVPP
CLKIO
GND2GND5
GND3GND4
SIM_DATA_1
SIM_CLK_1
SIM_RST_1
SIM_CONNECTOR_1
The Main Base Band Processor(MT6251) provides SIM Interface Module.
The MT6251 checks status Periodically During established call mode whether SIM card is inserted or not,
but it doesn’t check during deep sleep mode. In order to communicate with SIM card, 3 signals
SIM_DATA_1, SIM_CLK_1, SIM_RST_1.
And This model supports 1.8/3V SIM Card.
Figure 3.7.1. SIM CARD Interface
Signal Description
SIM_RST_1 This signal makes SIM card to HW default status.
SIM CLK 1 This signal is transferred to SIM card.
SIM_DATA_1 This signal is interface datum.