SD Extender Board 1.0 Secure Digital ... · PDF fileSecure Digital Memory Card Extender . User...

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)



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.



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).



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







B. SD Extender Board 1.0 Dimension



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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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

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