SD Extender Board 1.0
Secure Digital Memory Card Extender
User’s Manual
Preliminary
FAE2008SDEX_01
September 2008
Aeneas Electronics Co.,LTD
A35F,NO.61,ZHOU-TZYY ST., NEI-HU,TAIPEI,TAIWAN,R.O.C (+886)2-8797-4259 ext 600(+886)2-8797-4260
http://www.hwtools.netmail://[email protected]
www.HWtools.net
SD Extender Board 1.0_User’s Manual Page 1
FAE2008SDEX_01 ©2008 Aeneas Electronics
1.0 Introduction
Aeneas Electronics’ SD Extender board 1.0 is a debug and signal detection
tool for Secure Digital Memory Card.
The SD extender 1.0 is designed to minimize the signal degradation effects of
the extender by proven design techniques. Separate Vcc and GND plane
provide a low inductance path to the host’s power supply.
The SD extender has the function of over-current protection with PTC fuse. A
clearly marked jumper header allows probing of all signal pins. It’s also a
powerful tool for engineers, or use for factory test protection.
Test connector for all of signal and power pins
Any signal can be isolated with jumper block
Power and ground can be isolated for power measurements
LED indicates power status
Adds dumping resisters for all of signals
Vcc bypassed for clean power
Supports both Secure Digital Memory Cards and MMC cards
High quality connectors for long service life
Over-current protection with PTC fuse
Passive adapter unnecessary
Supports Card Type: MMC & Micro MMC & MMC plus & MMC mobile &
RS-MMC & SD & Micro SD & Mini SD & SD HC
2.0 Using the SD Extend
The SD Extender Board 1.0 allows a Secure Digital Memory Card to be
extended from the host slot for full access to the all of signal pins.
Signals may be examined with an oscilloscope or analyzer via a test header.
Figure-1 SD Extender Board 1.0(heads)
SD Extender Board 1.0_User’s Manual Page 2
FAE2008SDEX_01 ©2008 Aeneas Electronics
Figure-2 SD Extender Board 1.0(back)
2.1 Using SD Extender Board
SD Extender Board1.0 is fairly easy to use. The SD Extender is inserted into
the host socket with the connector pattern facing down.
Caution: You should insert, remove the extender and SD card carefully. The SD connector’s pins may be broken or bent if improper force is used. Both extender and card should be inserted straight. Care of extender will ensure your long years of trouble free service.
2.2 Test points
All 13 pins of the interface are available to probe through clearly marked
resister.
Note: See the reference table printed on PCB.
2.3 Over-current protection
With a PTC fuse, the extender has the over-current protection function. The
function is available when headerJP1 keeps ‘OPEN’ status.
2.4 Power Indicator
The LED may indicate the status of the host socket’s VDD. When the header
JP2 keeps ‘SHORT’ status, the PWR LED is on.
Note: The LED does not provide the accurate measurement of VDD. Use a voltmeter to determine the actual operating voltage.
SD Extender Board 1.0_User’s Manual Page 3
FAE2008SDEX_01 ©2008 Aeneas Electronics
2.5 Current Measurements
When header JP2 keeps ‘OPEN’ status, ampere meter may be inserted into
test circuit in series.
Caution: To ensure that the current measuring device is inserted before turning on power to the host socket. Improper power sequencing may cause a damage latch condition.
2.6 Jumper Block at JP1
When shipped from the factory, the header JP1 keeps ‘OPEN’ status, and JP2
keeps ‘SHORT’ status. In order to isolate a signal, remove the appropriate
jumper block(s).
SD Extender Board 1.0_User’s Manual Page 4
FAE2008SDEX_01 ©2008 Aeneas Electronics
Appendix
A. Secure Digital Pin Description
Table-1 SD Extender Signal Description
Table-2 SD Card Pinout
SD Conn Pin Name Description JP2 Pin
1 DAT3 DAT Bit3 2
2 CMD Command 4
3 VSS1 Supply Voltage Ground
4 VDD Supply Voltage
5 CLK Clock 6
6 VSS2 Supply Voltage Ground
7 DAT0 Data Bit 0 9
8 DAT1 Data Bit 1 10
9 DAT2 Data Bit 2 1
10 DAT4 Data Bit 4 3
11 DAT5 Data Bit 5 5
12 DAT6 Data Bit 6 7
13 DAT7 Data Bit 7 8
SD Extender Board 1.0_User’s Manual Page 5
FAE2008SDEX_01 ©2008 Aeneas Electronics
B. SD Extender Board 1.0 Dimension
SD Extender Board 1.0_User’s Manual Page 6
FAE2008SDEX_01 ©2008 Aeneas Electronics
C. SD Extender Board 1.0 Schematic
55
44
33
22
11
DD
CC
BB
AA
DA
T2D
AT3
DA
T4
VC
CC
LKD
AT6
CM
DD
AT5
DA
T7D
AT0
DA
T1
VD
D
DA
T2-D
AT3-
CM
D-
CLK
-
DA
T0-D
AT1-
VC
C
DA
T2-D
AT3-
CLK
-C
MD
-
DA
T0-D
AT1-
DA
T3C
MD
VC
CC
LK
DA
T0D
AT1
DA
T2D
AT4
DA
T5D
AT6
DA
T7
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Friday, August 15, 2008
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Friday, August 15, 2008
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SD
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C E
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Cplus E
xtender Designer: G
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A4
11
Friday, August 15, 2008
SD &
MM
Cplus &
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Cm
obile & R
S-MM
C &
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C extender
First schematic..................................2007/Nov/30 V1.0
PCB Layout Guideline
Schematic update note:
Reference Schematic Rev. 1.1
R1 DAT2R2 DAT3R3 DAT4R4 CMDR5 DAT5R6 CLKR7 DAT6R8 DAT7R9 DAT0R10 DAT1R20 330
F1 FuseC1 0.01uC2 0.01uC3 0.01uC4 0.01uTP1 GNDD1 LED
JP2LED Disable Enable
JP1Fuse Enable Disable
JUMPOPEN
SHORT
Pin A* = (Micro MMC)Pin B* = (Micro SD)
Add R11~R20 resister schematic..................2008/Mar/13 V1.1
R12 DAT3-R13 CMD-R15 CLK-R17 DAT0-R18 DAT1-
R11 DAT2-
Pin A* = (MMCplus & MMCmobile & RS-MMC & MMC & SD)Pin B* = (miniSD)
Solder Side
R10
33R
1033
D1
LED
56/TOD
1LE
D56/TO
R3
33R
333
R1
33R
133
JP1
JP1
21
C2
0.01u C2
0.01u
R11
33R
1133
R12
33R
1233
JP2
JP2
21
R8
33R
833
C1
0.01u
C1
0.01u
R17
33R
1733
TP1
TP11
R4
33R
433
C4
0.01u
C4
0.01u
F1S
MD
0805F1
SM
D0805
R6
33R
633
R20
330R
20330
R9
33R
933
R15
33R
1533
CN
4header 2x10
CN
4header 2x10
1 12 23 34 45 56 67 78 89 9
11 1112 1213 1314 1415 1516 1617 1718 1819 1920 20
10 10
R13
33R
1333
R18
33R
1833
CN
2
SD
/MM
C pin
CN
2
SD
/MM
C pin
DA
T31
CM
D2
VS
S1
3V
DD
4C
LK5
VS
S2
6
DA
T07
DA
T18
DA
T29
DA
T410
DA
T511
DA
T612
DA
T713
CN
1
Micro S
D/M
MC
connector
CN
1
Micro S
D/M
MC
connector
MM
C_C
MD
A3
MM
C_D
AT3
A2
MM
C_D
AT2
A1
MM
C_V
DD
1A
5M
MC
_VS
S1
A4
MM
C_C
LKA
7M
MC
_WP
A8
MM
C_D
AT0
A9
MM
C_D
AT1
A10
SD
_CLK
B5
SD
_DA
T2B
1S
D_D
AT3
B2
SD
_CM
DB
3S
D_V
DD
3B
4
SD
_DA
T0B
7S
D_D
AT1
B8
DR
ILL11
DR
ILL22
MM
C_V
DD
2A
6
SD
_VS
S3
B6
GN
D P
AD
13
GN
D_P
AD
24
SD
_WP
B9
SD
_CD
B10
C3
0.01u
C3
0.01u
R5
33R
533
R2
33R
233
CN
3
SD
/MM
C connector
CN
3
SD
/MM
C connector
MM
C_G
ND
A3
MM
C_C
MD
A2
MM
C_D
AT3
A1
MM
C_C
LKA
5M
MC
_VC
CA
4
MM
C_D
AT0
A7
MM
C_D
AT1
A8
MM
C_D
AT2
A9
MM
C_D
AT4
A10
MM
C_D
AT5
A11
MM
C_D
AT6
A12
MM
C_D
AT7
A13
SD
_CLK
B5
SD
_DA
T3B
1S
D_C
MD
B2
SD
_GN
DB
3S
D_V
CC
B4
SD
_DA
T0B
7S
D_D
AT1
B8
SD
_DA
T2B
9S
hild11
Shild2
2N
C1
B10
NC
2B
11
SD
_CD
B6
WP
#3
MM
C_C
DA
6R
733
R7
33