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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
Figure 31 Micro SD memory card detection scheme
Table 8 Micro SD memory card detect truth table.
Micro SD card status
it is removed
it is inserted
TF_DETECT High
Low
Figure 30 Micro SD socket circuit with power control
100K
R407
R405
100K
C2
C3
C3
C5
C5
C6
C6
C7
C7
16
GND1
GND2
15
GND3
14
13
GND4
GND5
12
11
GND6
SWA
10
9
SWB
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
C1
C1
C2
S401
1u
C402
27p
C403
R402
4.7K
47
R414
VIO_2V62
100K
R406
R415
100K
1000p
C406
VMMC
VSIM_2V8
C408
DNI
C401
DNI
1uF
C407
100K
R404
R403
100K
C404
DNI
MMC_D(2)
SIM_CLK
SIM_RST
MMC_D(0)
MMC_D(1)
MMC_CMD
SIM_IO
MMC_DETECT
MMC_CLK
MMC_D(3)