- 40 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. Technical brief
3.1.12 MicroSD Interface card
GD580 supports the MicroSD card interface as external memory card.
MicroSD card has 4-data line, so GD580 uses 4-data lines.
All control and data lines are connected to DB3150.
Cause of the difference between DB3150 and MicroSD card, a level shifter should be added.
Table 3-1-7. MicroSD card Interface
y Card detection
- When there are no card in MicroSD card socket, MICROSD_DETECT pin is high cause of
an external pull-up.
- If card is inserted in socket, MICROSD_DETECTpin changes Low cause of the
mechanical switch in the socket.
- VDDG_2V85 always supply power.
- If card is removed, APP_GP_MMC_DET pin changes high.
MicroSD card Interface
APP_GP_MMC_DET Card detection, connected to GPIO of DB3150
MICROSD_CMD_2V7 Command/Response
MICROSD_CLK_2V7 Clock
MICROSD_DAT_2V7 Data line
VDDG_2V85 Supply voltage from AB3000 internal LDO
Figure 3-1-12. MicroSD card and Schematic of MicroSD card Interface
R602 100K
5
0
6C
U7.4
100KR605
5
8
V
2
_G
D
D
V
8
V
1
_
ED
DV
R
YXZ
E
60
4
AC
V
A4
7
NS
10
6
LF
3D3
C
2C3
B
1A
3A
1
B
5
B
4
D4A
4C4
B
1
D
2
A
1C
2
D
2
B
5C
5
D
5A
A
CC
V
B
C
C
V
RID
_0T
AD
A
0T
A
DB
0TA
D
RI
D
_
32
1
TAD
A
1TA
D
B
1T
AD
A
2
T
AD
B
2
TA
D
A3T
ADB
3TAD
RI
D
_D
M
C
A
DM
C
AKL
C
F
_KL
C
1DNGB
DM
C
2
D
N
G
B
K
L
C
U7.4
4
1
6
C
R609 100K
R610 100K
R611 100K
U1.0
2
1
6C31
6
C
U
1
.
0
8V1
_
ED
D
V
1
T
AD
_
DSO
RCI
M
R
ID_TA
D
_
D
S
OR
C
I
M
R
I
D_DMC_D
SOR
CIM
3
T
AD
_
DSO
RCI
M
2
T
AD
_
DSO
R
C
I
M
0
TA
D
_
DS
O
RC
I
M
DMC
_
D
S
O
RCI
M
KLC_
D
S
OR
C
I
M
TE
R
KL
C_
C
M
M
_
P
G
_
P
P
A
7
V
2
_
3
T
A
D
_
D
S
O
R
C
IM
7V2_2
T
A
D
_
DS
O
R
C
IM
7
V
2_
1
T
A
D
_
D
S
O
R
C
IM
7
V
2
_0
TA
D
_
DSOR
C
IM
7V
2
_D
M
C
_
D
SO
R
CIM
7
V2
_
KL
C
_D
SO
RCIM
RETFIHS LEVEL DSORCIM
100K
R632
8
V
1
_
E
D
D
V
0
1
6C
U
7
.
4
VA601
ICVL0518100Y500FR
306DZ
R2
T
SC8.6BSR
VSMF05LCC
D602
43
52
61
IN
D
8
1
6
C
S601
49448-1611
ENSY0018601
2019
16
15
14
13
12
11
21
0
1
9
8
7
6
5
4
3
2
1
7
1
81
2T
S
1
TS
4S
1T
2T
3T
4
T
5T
6
T
7
T
8
T
8S
G3
S7
S3
S6
S2
S5
S1
G1 G2
P
2
2
91
6C
VA609
ICVL0518100Y500FR
58V2
_GD
D
V
T
ED
_
C
MM_PG_P
P
A
N
_
T
SRM
I
S
KL
C
M
I
S
7
V2
_
3
TA
D
_D
SOR
C
I
M
7
V2
_
2
TAD_D
SOR
CIM
7
V2
_
1
T
A
D_
D
SOR
C
I
M
7
V2
_
0
TAD_D
SOR
CIM
7
V
2
_
D
M
C
_DS
O
R
CIM
7
V
2
_KL
C
_DS
O
R
CIM
To Next Page
Loading...
