4. TROUBLE SHOOTING
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4. TROUBLE SHOOTING
4.13 Micro SD (uSD) Trouble
TEST POINT
S201
TP01 : C250
TP02 : R236
Figure 4.14
CIRCUIT
U U
U U
R231 : uSD D2
R232 : uSD D3
TP03 : C249
R235 : uSD D1
R234 : uSD D0
.
.
..
..
.
U
U
U
TP01
TP02
TP03
S201
GND
DAT2
CD_DAT3
CMD
VDD
CLK
VSS
CARD_DETECT
DAT0
COVER_DETECT1
DAT1
R229
47ohms
VMMC
FB206
600
47K
R230
47K
R231 R232
47K
R233
47K
R234
47K 47K
R235
DNI
C249 C250
2.2uF
1V8_VDD
100Kohms
R236
C251
0.001uF
USD_DET
USD_CLK
USD_CMD
USD_D1
USD_D2
USD_D3
USD_D0
u-SD CARD
TP03
TP0
TP01