Interface For Vag Com 409

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5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

USB

Created by BP_DE

RX

L -

Line

TX

K -

Line

pin13

pin26

DECOUPLING CAPS

pin3

VAG COM

HEX-USB
adapter
for
ver4.09

This Is GND
connected ONLY of
side of PC.

This is car GND (KL.31)
connected Only of side of
car.

L1 -any L with I = or >150mA

All C (exept C4) and
R are 1206 package

Vbat- unswiched
batery voltage

=

optional

max 10mA
truth LEDs

Q1 to Q4
BC817-40 or
similar

1

1

USB Interface fot VAG COM ver4.09

A3

1

1

Monday, January 23, 2006

Title

Size

Document Number

Rev

Date:

Sheet

of

RTS#

DTR#

TXD

SHIELD

VCC

VCC

VCC

KL30

VCC

KL30

VCC

VCC

VCC

KL30

VCC

KL30

L1

INDUCTOR

D2

LED

R20
2k2

R2 220R

Q1
NPN

R12

2k2

R16

2k2

ISO1

TLP181

R19

100k

R14

10k

R17

10k

R9

2k2

Q2
NPN

ISO2

TLP181

D1

LED

U2

FT232BM

25

24

23

22

21

20

19

5

28

4

32

1

2

2

9

9

18

1

7

31

14

15

16

12

10

11

1

3

6

3

0

2

6

3

8

7

27

TXD

RXD

RTS#

CTS#

DTR#

DSR#

DCD#

RSTOUT#

XTOUT

RESET#

EECS

EESK

EEDATA

A

G

N

D

G

N

D

RI#

G

N

D

TEST

PWRCTL

PWREN#

TXDEN

TXLED#

SLEEP#

RXLED#

V

C

C

-I

O

3V3OUT

A

V

C

C

V

C

C

V

C

C

USBDM

USBDP

XTIN

R1 220R

CN1
CN-USB

1
2
3
4

5

R10

10k

R21

2k2

U3

93C46

1
2
3
4

8
7
6
5

CS
SK
DIN
DOUT

VCC

NC
NC

GND

R3

10k

R8

1k5

C9
33nF

R13

220R

Q3
NPN

Q4

NPN

ISO3

TLP181

R11

10k

C10
10nF

R4
2k2

R15
220R

C11
0.1uF

Y1

6MHz

R5
470R

J1

OBD-II Con.-SAE-J1962

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

R6

27R

R7

27R

C1
0.1uF

C2
0.1uF

C3
0.1uF

C4
10uF

R18
220R

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All Signals used in

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ISO9141-2
Only signals used in VW - Connector Pin assignments


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