Sim & Usd Interface; Micro Sd Connector - LG GT350 Service Manual

3.5 SIM & uSD interface
GT350 supports 1.8V & 2.9V plug in SIM, SIM interface scheme is shown in (Figure 8).
SIM_IO, SIM_CLK, SIM_RST ports are used to communicate with BBP(S-Gold3) and the SIM power supply
enabled by PMIC.
SIM Interface
SIM_CLK : SIM card reference clock
SIM_RST : SIM card Async /sync reset
SIM_IO : SIM card bidirectional reset
SIM_IO
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Only for training and service purposes
SIM CONNECTOR
2V9_VSIM
R523
R528
J501
15K
DNI
4
5
6
10
9
C522
GCA26D-6S-H18-E1500
DNI
ENSY0025101

MICRO SD Connector

2V62_VIO
MMC_D[1]
MMC_D[0]
MMC_CLK
MMC_CMD
MMC_D[3]
MMC_D[2]
_MMC_DET
C516 C509 C502 C503
27p 27p 27p 27p
Figure 8 SIM & Micro SD Circuit
2V9_VSIM
1
C5 C1
2
C6 C2
3
C7 C3
7
GND4 GND1
8
GND3 GND2
C539 C540
220n 22p
2V9_VMME
2V9_VMME
S502
C510 C511 C518 C519 C520
ENSY0023501
27p 27p 27p 27p 1u
- 7 -
3. TECHNICAL BRIEF
SIM_RST
SIM_CLK
C521
1n
104042-001
DAT1_2
DUMMY1
DAT0
VSS
CLK
VDD
CMD
CD_DAT3
DUMMY2
DAT2
DETECT_A
DETECT_B
DUMMY3
LGE Internal Use Only