LG PRADA KE850 - Page 58

3. TECHNICAL BRIEF
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Table 10 Micro SD memory card detect truth table.
Micro SD card status
it is removed it is inserted
TF_DETECT High Low
Figure 32 Micro SD socket circuit with power control
VMMC
1u
C346
R332
100K
R334
100K
R327
100K
22p
C345
2
3
4
5
6
7
8
SWA SWB GND
GND
1
49225-0821S301
100K
R336
D
G
S
SI1305-E3
Q301
100K
R333
100K
R335
2V72_IO
TF_DAT1
TF_CMD
TF_DETECT
TF_PWR_EN
TF_DAT2
TF_DAT3
TF_CLK
TF_DAT0