LG KE600 Service Manual - Page 39
SIM interface
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3. TECHNICAL BRIEF RPWRON_EN C244 100p VBAT U206 1 VDD 4 NC 6 CE R1114D281D-TR-F VOUT 3 R252 1K GND1 2 GND2 5 C245 1000p RPWRON END_KEY RPWRON VBAT R213 0 U203 NLAST4599DFT2G 2 VCC 6 NO 4 NC C240 1uF GND 3 IN 1 COM 5 R215 0 PWRON R253 100K R217 100K END_KEY VBAT END END END_KEY R401 10K KP_OUT1 2 R402 1M 1 2SC5585 Q401 3 KP_IN5 D106 PRSB6.8C Figure9 Remote power on and End-key power on circuit 3.5. SIM interface KE600/KE608 supports 1.8V & 3V plug in SIM, SIM interface scheme is shown in (Figure 10). SIM_IO, SIM_CLK, SIM_RST ports are used to communicate with BBP(S-Gold2) and the SIM power supply enabled by BBP (_SIM_EN). SIM Interface SIM_CLK : SIM card reference clock SIM_RST : SIM card Async /sync reset SIM_IO : SIM card bidirectional reset 2V85_SIM S SI1305-E3 G Q301 D SIM_ENn SIM_IO C340 22p R339 4.7K R340 NA J301 4 1 5 6 GND1 VPP VCC RST 2 3 10 IO CLK 7 GND5 GND2 9 GND4 GND3 8 C339 0.1u SIM_RST SIM_CLK C341 22p Figure 10 SIM CARD Interface - 40 -
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